2009 HIGH PERFORMANCE TAPS
Transcription
2009 HIGH PERFORMANCE TAPS
2009 HIGH PERFORMANCE TAPS Navigating Your Way to Proper Tool Selection GUHRING has marked its Standard Tap Series with color rings to help you quickly and confidently choose the correct tool for your job. Each ring relates to the unique machining behaviors of different materials as dictated by their type and condition. The role of material type and condition in selecting the proper tap for each application cannot be overstated. So how do you use the GUHRING Tap Compass™ to find your way to improved tapping performance? s4HE'5(2).'4AP#OMPASSLISTSAWIDERANGEOFWORKPIECEMATERIALS by type and condition, and identifies a “Recommended” and “Alternate” color ring for each group. Just find your material, and you will find your ring. s/NCEYOUKNOWTHEOPTIMUMCOLORRINGFORYOURMATERIALYOUWILLNEED to answer 3 quick questions to pinpoint your route to the proper tool: What type of hole are you tapping? Through hole or Blind hole. What type of thread do you need? UNC, UNF, M or MF. What tool standard do you require? ANSI or DIN. General Purpose Alloyed & Unalloyed Steels Stainless Steels s7ITHYOURANSWERSINHANDYOUAREREADYTONAVIGATETOYOURCOLORRINGS Series pages and find the exact style and size of tap you need for your job. )TSTHATEASY4HE4AP#OMPASSBEGINSONPAGE /NTHEENTRYPAGESFOREACHCOLORRINGSECTIONYOUWILLlNDTHERECOMMENDED tapping speeds for your job – again specified by material type and condition. In the technical section of the catalog you will also find a broad overview of potential speeds for both cut and form taps. Please note: each application presents many variables - we have done our best to provide speeds based on our tool geometry for the average application. For additional information about Guhring threading products or any of our other families of high-performance cutting tools, visit www.guhring.com or CONTACTUSDIRECTLYAT High Tensile, Tool Steels Cast Iron Aluminum and Alloys Titanium or Nickel Contents GENERAL INFORMATION sæ)NDEXæTOæ'UHRINGæ4APSæ sæ4APæ#OMPASSææ-ATERIALæ3ELECTIONæ'UIDEæ sæ-ATERIALæ(ARDNESSæ#ROSSæ2EFERENCEæ#HARTæ 0AGEæ 0AGEæ 0AGEæ CUT TAPS sæ&ORæGENERALæPURPOSEæAPPLICATIONSæ sæ&ORæALLOYEDææUNALLOYEDæSTEELSæ sæ&ORæSTAINLESSæSTEELSææAEROSPACEæALLOYSæ sæ&ORæHIGHTENSILEæANDæTOOLæSTEELSæ sæ&ORæCASTæIRONææABRASIVEæMATERIALSæ sæ&ORæALUMINUMææALUMINUMæALLOYSæ sæ&ORæTITANIUMæNICKELæANDæTHEIRæALLOYSæ 0AGEæ 0AGEæ 0AGEæ 0AGEæ 0AGEæ 0AGEæ 0AGEæ STI TAPS sæ4HROUGHæHOLEæ sæ"LINDæHOLEæ 0AGEæ 0AGEæ FORM TAPS sæ4ECHNICALæOVERVIEWæ sæ5.#5.&æ sæ-ETRICæ sæ-ETRICæFINEæ 0AGEæ 0AGEæ 0AGEæ 0AGEæ TECHNICAL INFORMATION sæ$EFINITIONSæFLUTEæFORMSæCHAMFERæFORMSæ sæ4APæTOLERANCESæANDæAPPROXæLIMITSæ sæ#UTTINGæRATEæRECOMMENDATIONSæ sæ$).æCHARACTERISTICæFEATURESæFORæTAPSæ sæ'UHRINGæSUBSTRATEæANDæCOATINGæDESCRIPTIONSæ sæ4APæDRILLæSIZESæ sæ4ROUBLESHOOTINGæ 0AGEæ 0AGEæ 0AGEæ 0AGEæ 0AGEæææ 0AGEææ 0AGEææ sæ#OBALTæ0-æCOBALTæANDæCARBIDEæTAPSæ 0AGEæ GUHRING NO. APPENDIX Through hole taps Series ThreadType Color Ring Class of Fit Standard Chamfer Lead Substrate Finish Page No. Index UNC 3901 UNC 2B ANSI B Cobalt bright finish 26 3961 UNC 2B ANSI B Cobalt MolyGlide® 26 873 UNC 2B DIN 371 B Cobalt bright finish 26 878 UNC 2B DIN 376 B Cobalt bright finish 26 3902 UNF 2B ANSI B Cobalt bright finish 27 3962 UNF 2B ANSI B Cobalt MolyGlide® 27 908 UNF 2B DIN 374 B Cobalt bright finish 27 3900 Metric 6H ANSI B Cobalt bright finish 28 3960 Metric 6H ANSI B Cobalt MolyGlide® 28 803 Metric ISO 2 (6H) DIN 371 B Cobalt bright finish 28 815 Metric ISO 2 (6H) DIN 376 B Cobalt bright finish 29 UNF METRIC METRIC FINE 827 Metric Fine ISO 2 (6H) DIN 374 B Cobalt bright finish 30 830 Metric Fine ISO 2 (6H) DIN 374 C Cobalt bright finish 31 3913 UNC 2B ANSI B Cobalt bright finish 38 3916 UNC 2B ANSI B Cobalt TiN coated 38 3946 UNC 2B ANSI B Cobalt TiCN coated 38 2881 UNC 2B DIN 371 B Cobalt oxide finish 38 2883 UNC 2B DIN 376 B Cobalt oxide finish 38 UNC 2 General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys For a complete description of workpiece materials and which color ring they fall under, please see the Tap Compass at the beginning of the catalog Titanium or Nickel Through hole taps Series ThreadType Color Ring Class of Fit Standard Chamfer Lead Substrate Finish Page No. UNF UNF 2B ANSI B Cobalt bright finish 39 3917 UNF 2B ANSI B Cobalt TiN coated 39 3947 UNF 2B ANSI B Cobalt TiCN coated 39 2885 UNF 2B DIN 374 B Cobalt oxide finish 39 3912 Metric 6H ANSI B Cobalt bright finish 40 3915 Metric 6H ANSI B Cobalt TiN coated 40 3945 Metric 6H ANSI B Cobalt TiCN coated 40 2876 Metric 6H DIN 371 B Cobalt oxide finish 40 Index 3914 METRIC METRIC FINE 3973 Metric Fine 6H ANSI B Cobalt TiN coated 41 2879 Metric Fine ISO 2 (6H) DIN 374 B Cobalt oxide finish 41 OVERSIZED 3982 UNC / oversized H7 ANSI B Cobalt TiN coated 50 3986 UNC / oversized H11 ANSI B Cobalt TiN coated 50 3983 UNF / oversized H7 ANSI B Cobalt TiN coated 51 3987 UNF / oversized H11 ANSI B Cobalt TiN coated 51 3990 UNC / STI 3B STI Tap B Cobalt TiN coated 54 3991 UNF / STI 3B STI Tap B Cobalt TiN coated 54 3907 UNC 2B ANSI B PM cobalt TiN coated 58 1980 UNC 2B DIN 371 B Cobalt bright finish 58 1985 UNC 2B DIN 376 B Cobalt bright finish 58 STI UNC General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys Titanium or Nickel For a complete description of workpiece materials and which color ring they fall under, please see the Tap Compass at the beginning of the catalog 3 Through hole taps Series ThreadType Color Ring Class of Fit Standard Chamfer Lead Substrate Finish Page No. Index UNF 3908 UNF 2B ANSI B PM cobalt TiN coated 59 1990 UNF 2B DIN 374 B Cobalt bright finish 59 3906 Metric 6H ANSI B PM cobalt TiN coated 60 877 Metric ISO 2 (6H) DIN 371 B PM cobalt bright finish 61 879 Metric ISO 2 (6H) DIN 376 B PM cobalt bright finish 60 1870 Metric ISO 2 (6H) DIN 371 B Cobalt bright finish 61 1872 Metric ISO 2 (6H) DIN 376 B Cobalt bright finish 60 Metric Fine ISO 2 (6H) DIN 374 B Cobalt bright finish 61 UNC 2B DIN / ANSI B PM cobalt TiN coated 68 UNF 2B DIN / ANSI B PM cobalt TiN coated 68 804 Metric 6H DIN 371 B Cobalt bright finish 69 1914 Metric ISO 2 (6H) DIN 371 B Cobalt TiCN coated 69 816 Metric ISO 2 (6H) DIN 376 B Cobalt bright finish 69 1915 Metric ISO 2 (6H) DIN 376 B Cobalt TiCN coated 69 Metric Fine ISO 2 (6H) DIN 374 B Cobalt bright finish 70 3937 UNC 2B ANSI C Cobalt FIREX® coated 78 1979 UNC 2B DIN 371 C Cobalt oxide finish 78 1984 UNC 2B DIN 376 C Cobalt oxide finish 78 METRIC METRIC FINE 1873 UNC 3992 UNF 3994 METRIC METRIC FINE 828 UNC 4 General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys For a complete description of workpiece materials and which color ring they fall under, please see the Tap Compass at the beginning of the catalog Titanium or Nickel Through hole taps Series ThreadType Color Ring Class of Fit Standard Chamfer Lead Substrate Finish Page No. UNF UNF 2B ANSI C Cobalt FIREX® coated 79 1989 UNF 2B DIN 374 C Cobalt oxide finish 79 3936 Metric 6HX ANSI C Cobalt FIREX® coated 80 969 Metric ISO2(6H) DIN 371 C Carbide bright finish 82 1883 Metric ISO2(6H) DIN 376 C Carbide bright finish 82 1858 Metric ISO2(6H) DIN 371 C Carbide bright finish 80 1859 Metric ISO2(6H) DIN 376 C Carbide bright finish 80 318 Metric 6HX DIN 371 C Cobalt TiAlN oated 82 1890 Metric 6HX DIN 371 C Cobalt oxide finish 82 319 Metric 6HX DIN 376 C Cobalt TiAlN oated 82 1897 Metric 6HX DIN 376 C Cobalt oxide finish 82 Index 3938 METRIC METRIC FINE 972 Metric Fine ISO2(6H) DIN 371 C Carbide bright finish 83 1861 Metric Fine ISO2(6H) DIN 371 C Carbide bright finish 81 1860 Metric Fine ISO2(6H) DIN 374 C Carbide bright finish 81 347 Metric Fine 6HX DIN 374 C Cobalt TiAlN coated 83 1904 Metric Fine 6HX DIN 374 C Cobalt oxide finish 83 3925 UNC 2B ANSI B Cobalt bright finish 86 3928 UNC 2B ANSI B Cobalt TiN coated 86 3967 UNC 2B ANSI B Cobalt MolyGlide® 86 UNC General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys Titanium or Nickel For a complete description of workpiece materials and which color ring they fall under, please see the Tap Compass at the beginning of the catalog 5 Through hole taps Series ThreadType Color Ring Class of Fit Standard Chamfer Lead Substrate Finish Page No. Index UNF 3926 UNF 2B ANSI B Cobalt bright finish 86 3929 UNF 2B ANSI B Cobalt TiN coated 86 3968 UNF 2B ANSI B Cobalt MolyGlide® 86 3924 Metric 6H ANSI B Cobalt bright finish 87 3927 Metric 6H ANSI B Cobalt TiN coated 87 3966 Metric 6H ANSI B Cobalt MolyGlide® 87 1858 Metric ISO 2 (6H) DIN 371 C Carbide bright finish 87 1859 Metric ISO 2 (6H) DIN 376 C Carbide bright finish 87 METRIC METRIC FINE 1860 Metric Fine ISO 2 (6H) DIN 371 C Carbide bright finish 88 1861 Metric Fine ISO 2 (6H) DIN 376 C Carbide bright finish 88 2BX DIN 371 B PM cobalt bright finish 94 2BX DIN 371 B PM cobalt bright finish 94 2BX DIN 371 B PM cobalt bright finish 94 2BX DIN 371 B PM cobalt bright finish 94 6HX DIN 371 B PM cobalt bright finish 95 6HX DIN 371 B PM cobalt bright finish 95 6HX DIN 371 B PM cobalt bright finish 95 6HX DIN 371 B PM cobalt bright finish 95 UNC 2904 2918 UNC 2905‡ UNC Ni Ti UNF 2906 2919 UNF 2907‡ UNF Ni Ti METRIC 2900 2916 Metric 2901‡ Metric Ni Ti METRIC FINE 2902 2917 Metric Fine Ni 2903‡ Metric Fine Ti ‡ Design change - Crossed out series numbers are being replaced with the numbers with this symbol: ‡ Older series numbers available while supplies lst. 6 General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys For a complete description of workpiece materials and which color ring they fall under, please see the Tap Compass at the beginning of the catalog Titanium or Nickel Blind hole taps Series Thread Type Color Ring Class of Fit Standard Chamfer Lead Helix Substrate Finish Page No. UNC UNC 2B ANSI C 40° helix Cobalt bright finish 32 3964 UNC 2B ANSI C 40° helix Cobalt MolyGlide® 32 876 UNC 2B DIN 371 C 40° helix Cobalt bright finish 32 881 UNC 2B DIN 376 C 40° helix Cobalt bright finish 32 3905 UNF 2B ANSI C 40° helix Cobalt bright finish 33 3965 UNF 2B ANSI C 40° helix Cobalt MolyGlide® 33 911 UNF 2B DIN 374 C 40° helix Cobalt bright finish 33 3903 Metric 6H ANSI C 40° helix Cobalt bright finish 34 3963 Metric 6H ANSI C 40° helix Cobalt MolyGlide® 34 810 Metric ISO 2 (6H) DIN 371 C 40° helix Cobalt bright finish 34 822 Metric ISO 2 (6H) DIN 376 C 40° helix Cobalt bright finish 34 Cobalt bright finish 31 Index 3904 UNF METRIC METRIC FINE 830 Metric Fine ISO 2 (6H) DIN 374 C 833 Metric Fine ISO 2 (6H) DIN 374 C 15° helix Cobalt bright finish 35 834 Metric Fine ISO 2 (6H) DIN 374 C 40° helix Cobalt bright finish 35 3977 UNC 2B ANSI E 40° helix Cobalt TiN coated 44 3919 UNC 2B ANSI C 40° helix Cobalt bright finish 42 3922 UNC 2B ANSI C 40° helix Cobalt TiN coated 42 3949 UNC 2B ANSI C 40° helix Cobalt TiCN coated 42 3954 UNC 2B ANSI C 40° helix Cobalt TiN coated 45 1837 UNC 2B DIN 371 C(K) 40° helix Cobalt TiN coated 42 UNC General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys Titanium or Nickel For a complete description of workpiece materials and which color ring they fall under, please see the Tap Compass at the beginning of the catalog 7 Blind hole taps Series Thread Type Color Ring Class of Fit Standard Chamfer Lead Helix Substrate Finish Page No. Index UNF 3978 UNF 2B ANSI E 40° helix Cobalt TiN coated 44 3920 UNF 2B ANSI C 40° helix Cobalt bright finish 43 3923 UNF 2B ANSI C 40° helix Cobalt TiN coated 43 3950 UNF 2B ANSI C 40° helix Cobalt TiCN coated 43 3955 UNF 2B ANSI C 40° helix Cobalt TiN coated 45 1838 UNF 2B DIN 374 C(K) 40° helix Cobalt TiN coated 43 3976 Metric 6H ANSI E 40° helix Cobalt TiN coated 48 3918 Metric 6H ANSI C 40° helix Cobalt bright finish 46 3921 Metric 6H ANSI C 40° helix Cobalt TiN coated 46 3948 Metric 6H ANSI C 40° helix Cobalt TiCN coated 46 2790 Metric ISO 2 (6H) DIN 371 E 40° helix Cobalt bright finish 48 889 Metric ISO 2 (6H) DIN 371 C 40° helix Cobalt bright finish 46 2791 Metric ISO 2 (6H) DIN 376 E 40° helix Cobalt bright finish 48 890 Metric ISO 2 (6H) DIN 376 C 40° helix Cobalt bright finish 46 METRIC METRIC FINE 3974 Metric Fine 6H ANSI C 40° helix Cobalt TiN coated 47 2792 Metric Fine ISO 2 (6H) DIN 374 E 40° helix Cobalt bright finish 48 2424 Metric Fine ISO 2 (6H) DIN 374 C 40° helix Cobalt bright finish 47 OVERSIZED 8 3980 UNC / oversized H7 ANSI C 40° helix Cobalt TiN coated 52 3984 UNC / oversized H11 ANSI C 40° helix Cobalt TiN coated 52 3981 UNF / oversized H7 ANSI C 40° helix Cobalt TiN coated 53 3985 UNF / oversized H11 ANSI C 40° helix Cobalt TiN coated 53 General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys For a complete description of workpiece materials and which color ring they fall under, please see the Tap Compass at the beginning of the catalog Titanium or Nickel Blind hole taps Series Thread Type Color Ring Class of Fit Standard Chamfer Lead Helix Substrate Finish Page No. STI UNC / STI 3B STI Tap C 40° helix Cobalt TiN coated 55 3989 UNF / STI 3B STI Tap C 40° helix Cobalt TiN coated 55 3910 UNC 2B ANSI C 40° helix PM cobalt TiN coated 62 1981 UNC 2B DIN 376 C 40° helix Cobalt bright finish 62 1986 UNC 2B DIN 376 C 40° helix Cobalt bright finish 62 3911 UNF 2B ANSI C 40° helix PM cobalt TiN coated 63 2867 UNF 2B DIN 374 C 40° helix Cobalt bright finish 63 3909 Metric 6H ANSI C 40° helix PM cobalt TiN coated 64 909 Metric ISO 2 (6H) DIN 371 C 40° helix PM cobalt bright finish 64 910 Metric ISO 2 (6H) DIN 376 C 40° helix PM cobalt bright finish 64 2896 Metric ISO 2 (6H) DIN 371 C 15° helix Cobalt TiN coated 65 2895 Metric ISO 2 (6H) DIN 376 C 15° helix Cobalt TiN coated 65 Index 3988 UNC UNF METRIC METRIC FINE 936 Metric Fine ISO 2 (6H) DIN 374 C 40° helix PM cobalt bright finish 64 2897 Metric Fine ISO 2 (6H) DIN 374 C 15° helix Cobalt TiN coated 65 UNC 2B DIN / ANSI C 40° helix PM cobalt TiN coated 71 UNF 2B DIN / ANSI C 40° helix PM cobalt TiN coated 71 1188 Metric 6HX DIN 371 C 15° helix PM cobalt TiCN coated 74 1194 Metric 6HX DIN 374 C 15° helix PM cobalt TiCN coated 74 UNC 3993 UNF 3995 METRIC General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys Titanium or Nickel For a complete description of workpiece materials and which color ring they fall under, please see the Tap Compass at the beginning of the catalog 9 Index Blind hole taps Series Thread Type 811 Color Ring Class of Fit Standard Chamfer Lead Helix Substrate Finish Page No. Metric ISO 2 (6H) DIN 371 C 40° helix Cobalt bright finish 72 823 Metric ISO 2 (6H) DIN 376 C 40° helix Cobalt bright finish 73 935 Metric ISO 2 (6H) DIN 376 C 15° helix PM cobalt bright finish 73 1894 Metric ISO 2 (6H) DIN 371 C 40° helix Cobalt bright finish 72 1916 Metric ISO 2 (6H) DIN 371 C 40° helix Cobalt TiCN coated 72 1901 Metric ISO 2 (6H) DIN 376 C 40° helix Cobalt bright finish 72 1917 Metric ISO 2 (6H) DIN 376 C 40° helix Cobalt TiCN coated 73 2944 Metric ISO 2 (6H) Guhring Std. D 0° helix Carbide TiCN coated 73 METRIC FINE 1200 Metric Fine 6HX DIN 376 C 15° helix PM cobalt TiCN coated 74 835 Metric Fine ISO 2 (6H) DIN 374 C 40° helix Cobalt bright finish 75 1907 Metric Fine ISO 2 (6H) DIN 374 C 40° helix Cobalt bright finish 75 3937 UNC 2B ANSI C Cobalt FIREX® coated 78 1979 UNC 2B DIN 371 C Cobalt oxide finish 78 1984 UNC 2B DIN 376 C Cobalt oxide finish 78 3938 UNF 2B ANSI C Cobalt FIREX® coated 79 1989 UNF 2B DIN 374 C Cobalt oxide finish 79 3936 Metric 6HX ANSI C Cobalt FIREX® coated 80 1858 Metric ISO2(6H) DIN 371 C Carbide bright finish 80 1859 Metric ISO2(6H) DIN 376 C Carbide bright finish 80 318 Metric 6HX DIN 371 C Cobalt TiAlN coated 82 319 Metric 6HX DIN 376 C Cobalt TiAlN coated 82 UNC UNF METRIC 10 General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys For a complete description of workpiece materials and which color ring they fall under, please see the Tap Compass at the beginning of the catalog Titanium or Nickel Blind hole taps Series Thread Type Color Ring Class of Fit Standard Chamfer Lead Helix Substrate Finish Page No. METRIC FINE Metric Fine ISO2(6H) DIN 371 C Carbide bright finish 83 1861 Metric Fine ISO2(6H) DIN 371 C Carbide bright finish 81 1860 Metric Fine ISO2(6H) DIN 374 C Carbide bright finish 81 347 Metric Fine 6HX DIN 374 C Cobalt TiAlN coated 83 1904 Metric Fine 6HX DIN 374 C Cobalt oxide finish 83 3931 UNC 2B ANSI C 45° helix Cobalt bright finish 89 3934 UNC 2B ANSI C 45° helix Cobalt TiN coated 89 3970 UNC 2B ANSI C 45° helix Cobalt MolyGlide® 89 3932 UNF 2B ANSI C 45° helix Cobalt bright finish 89 3935 UNF 2B ANSI C 45° helix Cobalt TiN coated 89 3971 UNF 2B ANSI C 45° helix Cobalt MolyGlide® 89 3930 Metric 6H ANSI C 45° helix Cobalt bright finish 90 3933 Metric 6H ANSI C 45° helix Cobalt TiN coated 90 3969 Metric 6H ANSI C 45° helix Cobalt MolyGlide® 90 969 Metric ISO 2 (6H) DIN 371 C Carbide bright finish 90 971 Metric ISO 2 (6H) DIN 371 C Carbide bright finish 90 1883 Metric ISO 2 (6H) DIN 376 C Carbide bright finish 90 Carbide bright finish 91 Index 972 UNC UNF METRIC 15° helix METRIC FINE 972 Metric Fine ISO 2 (6H) DIN 371 C 977 Metric Fine ISO 2 (6H) DIN 371 C 15° helix Carbide bright finish 91 978 Metric Fine ISO 2 (6H) DIN 374 C 15° helix Carbide bright finish 91 General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys Titanium or Nickel For a complete description of workpiece materials and which color ring they fall under, please see the Tap Compass at the beginning of the catalog 11 Blind hole taps Series Thread Type Color Ring Class of Fit Standard Chamfer Lead Helix Substrate Finish Page No. 2BX DIN 371 C 10° helix PM cobalt TiAlN coated 96 2BX DIN 371 C 15° helix PM cobalt TiCN coated 96 2BX DIN 371 C 10° helix PM cobalt TiAlN coated 96 2BX DIN 371 C 15° helix PM cobalt TiCN coated 96 6HX DIN 371 C 10° helix PM cobalt TiAlN coated 97 6HX DIN 371 C 15° helix PM cobalt TiCN coated 97 6HX DIN 371 C 10° helix PM cobalt TiAlN coated 97 6HX DIN 371 C 15° helix PM cobalt TiCN coated 97 Index UNC 2922 UNC 2912 UNC Ni Ti UNF 2923 UNF 2914 UNF Ni Ti METRIC 2920 Metric 2908 2908‡ Metric Ni Ti METRIC FINE 2921 Metric Fine Ni 2910 Metric Fine Ti ‡ Design change - Crossed out series numbers are being replaced with the numbers with this symbol: ‡ Older series numbers available while supplies lst. Form taps Series ThreadType Color Ring Class of Fit Standard Chamfer Lead Substrate Finish Page No. UNC 3959 UNC 2BX ANSI E Cobalt TiN coated 106 3940 UNC 2BX ANSI C Cobalt TiN coated 106 3943 UNC 2BX ANSI C Cobalt TiCN coated 106 1582 UNC 2BX DIN 371 C Cobalt TiN coated 107 1583 UNC 2BX DIN 376 C Cobalt TiN coated 107 3972 UNF 2BX ANSI E Cobalt TiN coated 108 3941 UNF 2BX ANSI C Cobalt TiN coated 107 3944 UNF 2BX ANSI C Cobalt TiCN coated 107 UNF 12 General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys For a complete description of workpiece materials and which color ring they fall under, please see the Tap Compass at the beginning of the catalog Titanium or Nickel Form taps Series ThreadType 1584 1585 Color Ring Standard Chamfer Lead Substrate Finish Page No. UNF 2BX DIN 371 C Cobalt TiN coated 108 UNF 2BX DIN 376 C Cobalt TiN coated 108 3979 Metric 6HX ANSI E Cobalt TiN coated 109 3939 Metric 6HX ANSI C Cobalt TiN coated 109 3942 Metric 6HX ANSI C Cobalt TiCN coated 109 1927 Metric 6HX DIN 371 E Carbide *TiCN coated 110 1972 Metric 6HX DIN 371 C Carbide *TiCN coated 110 1931 Metric 6HX DIN 376 C Carbide *TiCN coated 111 323 Metric 6HX DIN 371 C PM cobalt TiCN coated 110 1717 Metric 6HX DIN 371 C PM cobalt AlCrN 110 919 Metric 6HX DIN 371 C Cobalt TiN coated 110 342 Metric 6HX DIN 376 C PM cobalt TiN coated 111 1719 Metric 6HX DIN 376 C PM cobalt AlCrN 111 Index Class of Fit METRIC METRIC FINE 3975 Metric Fine 6HX ANSI C Cobalt TiN coated 111 1581 Metric Fine 6HX DIN 374 C Carbide *TiCN coated 113 1721 Metric Fine 6HX DIN 371 C PM cobalt AlCrN 113 338 Metric Fine 6HX DIN 374 C PM cobalt TiN coated 112 1723 Metric Fine 6HX DIN 374 C PM cobalt AlCrN 112 927 Metric Fine 6HX DIN 374 C Cobalt TiN coated 112 * All carbide form taps will be changing to TiCN coating as inventory levels are replenished General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys Titanium or Nickel For a complete description of workpiece materials and which color ring they fall under, please see the Tap Compass at the beginning of the catalog 13 Condition Tap Compass Material Form TiNi 1005, 1006, 1008, 1009, 1010, 1011, 1012, 1013, 1015, 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1023, 1025, 1026, 1029 Tap Compass ™ Unalloyed Carbon Steels 1060, 1064, 1065, 1069, 1070, 1071, 1074, 1075, 1078, 1080, 1084, 1085, 1086, 1090, 1095 Low Carbon - ≤ 180 Hot rolled, Normalized, Annealed, Cold drawn ≤ 20 ≤ 230 Annealed, Cold drawn ≤ 30 ≤ 280 - ≤ 180 ≤ 20 ≤ 230 Annealed, Cold drawn, Quenched and Tempered ≤ 30 ≤ 280 Normalized, Annealed, Quenched and Tempered ≤ 35 ≤ 320 Quenched and Tempered ≤ 38 ≤ 350 Hot rolled, Normalized, Annealed, Cold drawn ≤ 38 ≤ 230 Hot rolled, Annealed, Cold drawn, Quenched and Tempered ≤ 20 ≤ 280 Normalized, Annealed, Quenched and Tempered ≤ 35 ≤ 320 Quenched and Tempered ≤ 38 ≤ 350 - ≤ 150 - ≤ 200 ≤ 25 ≤ 250 - ≤ 200 ≤ 25 ≤ 250 ≤ 33 ≤ 300 ≤ 38 ≤ 350 Hot rolled, Annealed - ≤ 150 Cold drawn - ≤ 200 - ≤ 180 ≤ 20 ≤ 230 ≤ 30 ≤ 280 ≤ 35 ≤ 320 ≤ 38 ≤ 350 10L10, 10L15, 10L17, 10L20, 10L23, 11L15, 11L16, 11L17, 12L11, 12L12, 12L13, 12L14, 12L15, 51L15, 1L17, 51L20 Hot rolled, Normalized, Annealed, Cold drawn Free Machining Leaded Steels Medium Carbon 10L25, 10L30, 10L35, 10L40, 10L42, 10L45, 10L49, 10L50, 10L55, 86L20, 86L40, 11L37, 11L38, 11L39, 11L41, 11L44, 11L46, 41L25, 41L30, 41L35, 41L40, 41L42, 41L47, 41L50 Cold drawn, Quenched and Tempered Low Carbon 1108, 1109, 1110, 1114, 1115, 1116, 1118, 1119, 1120, 1126, 1211, 1212, 1213, 1215 Hot rolled, Normalized, Annealed, Cold drawn Resulphurized Steels Medium Carbon 1132, 1137, 1138, 1139, 1140, 1141, 1144, 1145, 1146, 1151 Cold drawn, Quenched and Tempered COLOR RING Brinell Recommended Alternate(s) Normalized, Hot rolled, Annealed, Cold drawn Hot rolled, Normalized, Annealed, Cold Drawn 1030, 1033, 1035, 1037, 1038, 1039, 1040, 1042, 1043, 1044, 1045, 1046, 1049, 1050, 1053, 1055, 1059 Hardness HRC Quenched and Tempered 14 General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys Titanium or Nickel Hardness Condition Material 1513, 1518, 1522 Normalized, Hot rolled, Annealed, Cold drawn - ≤ 180 Annealed, Cold drawn ≤ 20 ≤ 230 Hot rolled, Normalized, Annealed, Cold drawn ≤ 30 ≤ 280 - ≤ 180 ≤ 20 ≤ 230 Hot rolled, Annealed, Cold drawn, Normalized, Quenched and Tempered ≤ 30 ≤ 280 Normalized, Annealed, Quenched and Tempered ≤ 35 ≤ 320 Quenched and Tempered ≤ 38 ≤ 350 Hot rolled, Normalized, Annealed, Cold Drawn ≤ 20 ≤ 230 Hot rolled, Annealed, Cold drawn, Normalized, Quenched and Tempered ≤ 30 ≤ 280 Normalized, Annealed, Quenched and Tempered ≤ 35 ≤ 320 Quenched and Tempered ≤ 38 ≤ 350 Hot rolled, Normalized, Stress relieved - ≤ 150 - ≤ 200 ≤ 25 ≤ 250 ≤ 38 ≤ 300 ≤ 38 ≤ 350 - ≤ 180 ≤ 20 ≤ 230 ≤ 30 ≤ 280 - ≤ 180 ≤ 20 ≤ 230 Hot rolled, Cold drawn, Annealed, Normalized, Quenched and Tempered ≤ 30 ≤ 280 Normalized, Annealed, Quenched and Tempered ≤ 35 ≤ 320 Quenched and Tempered ≤ 38 ≤ 350 Hot rolled, Normalized, Annealed, Cold drawn Carbon Manganese Steels Medium Carbon High Carbon 1524, 1525, 1526, 1527, 1536, 1541 1547, 1548 (46Mn5), 1551 (52Mn4), 1552 (52Mn5), 1561, 1566 (66Mn4), 1572 (80Mn4) 30, 35, 42, 45, 50 55, 60, 65 Structural Steels Yield Strength in 1000 PSI 70, 75 , 80 Hot rolled, Normalized, Stress relieved, Quenched and Tempered 85, 90 , 100, 110 135, 140, 145, 150, 160 Low Carbon Manganese Steels 10B08, 10B15, 10B16, 10B21, 10B22, 10B23 Quenched and Tempered Normalized, Hot rolled, Annealed, Cold drawn Annealed, Cold drawn Boron Treated Steels Hot rolled, Normalized, Annealed, Cold drawn Medium Carbon Manganese Steels 10B30, 10B35, 10B37, 10B38, 10B39, 10B40, 10B41, 10B45, 10B50, 10B62, 13B20, 15B22, 15B47 Continues on next page General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys COLOR RING Brinell Recommended Alternate(s) Titanium or Nickel Tap Compass Low Carbon HRC 15 Condition Tap Compass Material Low Carbon Alloyed Steels 32B15, 41B18, 51B15, 51B17, 51B20, 86B20, 86B22, 94B15, 94B17 Medium Carbon Alloyed Steels 51B30, 51B32, 51B40, 51B55, 92B55, 50B40, 50B44, 50B46, 50B50, 50B60, 51B60, 81B45, 86B45, 94B30, 94B40 ≤ 20 ≤ 230 Hot rolled, Annealed, Cold drawn, Normalized ≤ 30 ≤ 280 ≤ 35 ≤ 320 ≤38 ≤ 350 Hot rolled, Annealed, Cold drawn ≤ 20 ≤ 230 Normalized, Cold drawn, Annealed, Quenched and Tempered ≤ 30 ≤ 280 ≤ 35 ≤ 320 ≤ 38 ≤ 350 Hot rolled, Annealed, Cold drawn ≤ 20 ≤ 230 Hot rolled, Normalized, Annealed, Cold drawn ≤ 30 ≤ 280 ≤ 35 ≤ 320 ≤38 ≤ 350 Hot rolled, Annealed, Cold drawn ≤ 20 ≤ 230 Annealed, Normalized, Cold drawn, Quenched and Tempered ≤ 30 ≤ 280 ≤ 35 ≤ 320 ≤ 38 ≤ 350 - ≤ 185 - ≤ 180 Annealed, Cold drawn ≤ 20 ≤ 230 Cold drawn ≤ 30 ≤ 280 - ≤ 180 ≤ 20 ≤ 230 ≤ 30 ≤ 280 ≤ 35 ≤ 320 ≤ 38 ≤ 350 Normalized, Quenched and Tempered Low Carbon 2317, 2512, 2515, 2517, 3115, 3120, 3215, 3220, 3312, 3316, 3325, 4012, 4023, 4024, 4027, 4028, 4118, 4119, 4125, 4317, 4320, 4419, 4422, 4427, 4608, 4615, 4617, 4620, 4621, 4626, 4718, 4720, 4815, 4817, 4820, 5015, 5115, 5117, 5120, 6115, 6118, 6120, 6125, 8115, 8615, 8617, 8620, 8622, 8625, 8627, 8720, 8822, 9310, 9315, 9317 Normalized, Quenched and Tempered COLOR RING Brinell Recommended Alternate(s) Hot rolled, Annealed, Cold drawn Normalized, Quenched and Tempered Boron Treated Steels Hardness HRC Alloy Steels Medium Carbon Ferritic 1330, 1335, 1340, 1345, 3140, 3145, 3150, 3230, 3240, 3335, 3340, 3435, 3450, 4032, 4037, 4063, 4130, 4135, 4137, 4140, 4142, 4145, 4147, 4150, 4161, 4337, 4340, 4640, 5045, 5046, 5060, 5130, 5132, 5135, 5140, 5145, 5157, 5150, 5155, 5160, 6130, 6135, 6140, 6145, 6150, 7140, 6145, 6150, 7140, 8630, 8632, 8635, 8637, 8640, 8642, 8645, 8650, 8650, 8660, 8735, 8740, 8742, 9250, 9254, 9255, 9260, 9262, 9840, 9850, 2340 Normalized, Quenched and Tempered 405, 409, 429, 430, 434, 436, 442, 446 Annealed Austenitic 201, 202, 301, 302B, 304, 304L, 305, 308, 309, 309S, 310, 310S, 314, 316, 316L, 317, 321, 330, 347, 348, 384, 385, Nitronic 32, Nitronic 33, Nitronic 40, Nitronic 50, Nitronic 60 Stainless Steels, Wrought Annealed Martensitic 1403, 410, 414, 420, 422, 431, 440A, 440B, 440C, 501, 502, Greek Ascoloy Quenched and Tempered Continues on next page 16 General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys Titanium or Nickel Stainless Steels, Wrought 15-5PH, 16-6PH, 17-4PH, 17-7PH, 1714CuMo, AF-71, AFC-77, AM-363, AM363, AM350, AM355, Custom450, Custom 455, HNM, PH13-8 Mo, PH14-8 Mo, PH15-7Mo, Stainless W HRC COLOR RING Brinell Recommended Alternate(s) - ≤ 200 ≤ 25 ≤ 250 ≤ 33 ≤ 300 ≤ 38 ≤ 350 Annealed Tap Compass Precipitation Hardening Hardness Condition Material Hardened 430F, 430F Se Free Machining Stainless Steels 203 Ez, 303, 303 Se, 303 Ma, 303 Pb, 303 PlusX Annealed - Cold drawn ≤ 28 ≤ 270 Annealed - ≤ 180 Annealed, Cold drawn ≤ 23 ≤ 240 Quenched and Tempered ≤ 35 ≤ 320 ≤ 25 ≤ 250 - ≤ 220 ≤ 29 ≤ 270 - ≤ 200 ≤ 25 ≤ 250 ≤ 38 ≤ 350 - ≤ 200 ≤ 25 ≤ 250 - ≤ 220 - ≤ 150 - ≤ 200 ≤ 25 ≤ 250 ≤ 180 Medium Carbon 416, 416 Se, 416 PlusX, 420F, 420F Se, 440F, 440F Se M1, M2, M6, M10, T1, T2, T6 High Speed Steels M3-1, M3-2, M4, M7, M30, M33, M34, M36, M41, M42, M43, M44, M46, M47, T4, T5, T8, T15 Annealed H10, H11, H12, H13, H14, H19 Hot Works Quenched and Tempered H21, H22, H23, H24, H25, H26, H41, H42, H43 Tool Steels A7, D2, D3, D4, D5, D7 Cold Works A2, A3, A4, A5, A6, A8, A9, A10, O1, O2, O6, O7 Stock Resisting S1, S2, S4, S5, S6, S7 Mold P2, P3, P4, P5, P6, P20, P21 Special Purpose Annealed F1, F2, L2, L3, L6 Continues on next page General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys Titanium or Nickel 17 Condition Material Tap Compass Water Hardening Nitriding Tool Steels COLOR RING Brinell Recommended Alternate(s) Annealed ≤ 25 ≤ 250 Normalized, Quenched and Tempered ≤ 30 ≤ 280 As cast, Annealed - ≤ 180 As cast ≤ 25 ≤ 250 As cast, Quenched and Tempered ≤ 35 ≤ 320 Annealed - ≤ 190 - ≤ 220 ≤ 25 ≤ 250 W1, W2, W5 Nitralloy 125, Nitralloy 135, Nitralloy 135Mod, Nitralloy 225, Nitralloy 230, Nitralloy EZ, Nitralloy N, Nitrex 1 ASTM SAE A159 G1800, A48 class 20 J431 G1800 A159 G2500, A48 class 25 J431 G2500 A159 G3000, A48 class 30, 25, 40 J431 G3000 A159 G3500, A48 class 45 Gray Cast Iron Hardness HRC A159 G4000, A48 class 50 J431 G3500 J431 G4000 A48 class 45 A48 class 55 A48 class 60 UNS ASTM SAE F32800 A536 60-40-18 J434 D4018 F33100 A536 65-45-12 J434 D4512 F33800 A536 80-55-06 J434 D5506 Ferritic Ductile Cast Iron High Alloy Cast Iron High Alloy Ductile Cast Iron 18 General Purpose Ferritic / Pearlitic DIN As cast GGG50, GGG60 Pearlitic / Martensitic F34800 A536 100-70-03 J434 D7003 GGG70 Normalized and Tempered ≤ 33 ≤ 300 Martensitic F36200 A536 120-90-02 J434 DQ&T GGG80 Quenched and Tempered ≤ 36 ≤ 330 - ≤ 220 - ≤ 215 ≤ 25 ≤ 250 - ≤ 200 ≤ 28 ≤ 270 Austenitic Austenitic Alloyed & Unalloyed Steels UNS SAE F41000, F41001, F41006 A436 Type 1, A436 Type 1b, A436 Type 5 F41002, F41004, F41007 A436 Type 2, A436 Type 3, A436 Type 6 F41003, F41005 A436 Type 2b, A436 Type 4 UNS SAE F43000, F43002, F43004, F43006, F43007, F43010 A439 D2, A439 D2C, A439 D3A, A439 D5, A439 D5B, A571 D2M F43001, F43003, F43005 A439 D2B, A439 D3, A439 D4 Stainless Steels High Tensile, Tool Steels As cast Annealed Cast Iron Aluminum and Alloys Titanium or Nickel UNS Pearlitic F22830, F23130, F23530, F20001, F20002 - ≤ 160 - ≤ 200 ≤ 23 ≤ 240 ≤ 26 ≤ 255 ≤ 27 ≤ 260 ≤ 30 ≤ 280 ≤ 35 ≤ 320 Cold drawn - 30 to 80 500 kg Solution treated and Aged - 75 to 150 500 kg As cast - 40 to 100 500 kg Solution treated and Aged - 70 to 125 500 kg As cast - 40 to 100 500 kg Solution treated and Aged - 70 to 125 500 kg As cast - 40 to 100 500 kg Solution treated and Aged - 70 to 125 500 kg As cast - 40 to 100 500 kg Solution treated and Aged - 70 to 125 500 kg 99.5 - ≤ 170 99.2, 99.0, Ti-0.2Pd - ≤ 200 99.0, 98.0, Ti-02Pd ≤ 29 ≤ 275 ≤ 37 ≤ 340 Ti-6AI-4V, Ti-6AI-4V ELI ≤ 38 ≤ 350 Ti-5AI-2Sn-2Zr-4Mo-4Cr (Ti-17), Ti-6AI-6V-2Sn, Ti-7AI-4Mo, Ti-8AI-1Mo-1V ≤ 40 ≤ 370 Ti-1AI-8V-5Fe ≤ 41 ≤ 380 Malleable Cast Iron Al Alloys, Wrought Low Silicon ≤ 7% 7-10% Silicon Aluminum Die Casting 7-14% Silicon F20003, F2410, F20004, F25530 A140, 201.0, 208.0, 213.0, 222.0, 224.0, 242.0, 295.0, B295.0, 308.0, 319.0, 328.0, A332.0, F332.0, 333.0, 354.0, 355.0, C355.0, 356.0, A356.0, 357.0, 359.0, B443.0, 514.0, A514.0, 520.0, 535.0, 705.0, 707.0, A712.0, D712.0, 713.0, 771.0, 8500, A850.0, B850.0 Alloyed & Unalloyed Steels Malleablized and Heat Treated 383.0, A384.0, 413.0, A413.0 390.0, 392.0 Ti-8Mn, Ti2AI-11Sn-5Zr-1Mo, Ti-5AI-2, 5Sn ELI, Ti-5AI-6Sn-2Zr-1Mo, Ti-6AI-2Cb-1Ta-0.8Mo, Ti-6A1-2Sn-4Zr-2Mo, Ti-6AI-2Sn-4Zr-2Mo-.25Si, Ti-6AI-2Sn-4Zr-6Mo Alpha and Alpha-Beta Alloys Malleablized 360.0, A360.0, 380.0, A380.0, C443.0, 518.0 Commercially Pure General Purpose A602 G M5503, J158 G M5503, A220 G 60004, A602 G M7002, J158 G M7002, A220 G 70003, A220 G 80002, A602 G M8501, J158 G M8501, A220 G 90001 EC 1060, 1100, 1145, 1175, 1235, 2011, 2014, 2017, 2018, 2021, 2024, 2025, 2117, 2218, 2219, 2618, 3003, 3004, 3005, 4032, 5005, 5050, 5052, 5056, 5083, 5086, 5154, 5252, 5254, 5454, 5456, 5457, 5652, 5657, 6053, 6061, 6063, 6066, 6070, 6101, 6151, 6253, 6262, 6463, 6951, 7001, 7004, 7005, 7039, 7049, 7050, 7075, 7079, 7175, 7178 ≤ 14% Silicon Titanium Alloys, Wrought A602 G M3210, J158 G M3210, A47 G 32510, A47 G 3201 A220 G 40010, J125 pearlitic malleable, A220 G 45006, A220 G 45008, A220 G 50005, A602 G M4504, J158 G M4504, A602 G M5003, J158 G M5003 COLOR RING Brinell Recommended Alternate(s) Tap Compass F20000 Al Alloys, Wrought HRC ASTM / SAE Ferritic Martensitic Hardness Condition Material Stainless Steels High Tensile, Tool Steels Annealed Cast Iron Aluminum and Alloys Titanium or Nickel 19 Condition Tap Compass Material Alpha and Alpha-Beta Alloys Titanium Alloys, Wrought Ti-6AI-4V, Ti-6AI-4V ELI, Ti-6AI-2Sn-4Zr-2Mo, Ti-6AI-2Sn-4Zr-2Mo-.2Si, Ti-6AI-2Sn-4Zr-6Mo Ti-1AI-8V-5Fe, Ti-3AI-2.5V, Ti-5AI-2Sn-2Zr-4Mo-4Cr (Ti-17), Ti-6AI-6V-2Sn, Ti-7AI-4Mo Ti-3AI-8V-6Cr-4Mo-4Zr, Ti-8Mo-8V-2Fe-3AI, Ti-11.5Mo-6Zr-4.5Sn, Ti-10-2Fe-3AI, Ti-13V-11Cr-3AI Beta Alloys 99.0, Ti-0.2Pd, ASMT B367 Grades C-3, C-4, C-8A, C-8B Titanium Alloys, Cast Chromium-Nickel Nickel Alloys, Cast 20 General Purpose ≤ 380 ≤ 46 ≤ 440 Annealed or Solution treated ≤ 38 ≤ 350 Solutions treated and Aged ≤ 46 ≤ 440 - ≤ 200 <25 ≤ 250 <35 ≤ 320 < 38 ≤ 350 Solutions treated and Aged As Cast, As Cast and Annealed Alpha and Alpha-Beta Alloys Ti-5AI-2Sn, Ti-6AI-4V, Ti-6AI-2Sn-4Zr-2Mo, Ti-8AI-1Mo-1V, ASMT B367 Grades C-5, C-6 Alpha and Alpha-Beta Alloys A560 ² 40 ² 375 Grade 50Cr-50Ni, 60Cr-40Ni As Cast ≤ 41 ≤ 375 Nickel 200, Nickel 201, Nickel 205, Nickel 211, Nickel 220, Nickel 230 Anneald, Cold drawn - ≤ 170 MONEL Alloy 400, MONEL Alloy 401, MONEL Alloy 404, MONEL Alloy R405; A2996 Grades CZ-100, M-35; A494 Grades CZ-100, M-35 Anneald, Cold drawn, As Cast ≤ 25 ≤ 250 Solution treated ≤ 35 ≤ 320 Aged ≤ 39 ≤ 360 Cast Iron Aluminum and Alloys Wrought and Cast Incoloy Alloys, Inconel Alloys, Hastelloy Alloys, Rene, DURANICKEL Alloy 301, MONEL Alloy 502, MONEL Alloy K500, NI-SPAN-C Alloy 902, PERMANICKEL Alloy 300 Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels COLOR RING Brinell Recommended Alternate(s) ≤ 41 99.0, Ti-0.2Pd, ASMT B367 Grades C-1, C-2, C-7A, C-7B Commercially Pure Hardness HRC Titanium or Nickel Material Hardness & Tensile Strength Cross-Reference Chart* Brinell Vickers 76 80.7 85.5 90.2 95 98.8 105 109 114 119 124 128 133 138 143 147 152 156 162 166 171 176 181 185 190 195 199 204 209 214 219 223 228 233 238 242 247 252 257 261 266 271 276 280 285 295 304 314 323 333 342 352 361 371 380 390 399 409 418 428 437 447 456 463 475 485 494 504 513 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 240 245 250 255 260 265 270 275 280 285 290 295 300 310 320 330 340 350 360 370 380 390 400 410 420 430 440 450 460 470 480 490 500 510 520 530 540 Rockwell HRB HRC PSI 41.0 48.0 52.0 58.2 62.3 66.7 71.2 75.0 78.7 81.7 85.0 87.1 89.5 91.6 92.6 93.5 94.0 95.0 96.0 96.7 98.1 99.5 101 102 104 105 20.3 21.3 22.2 23.1 24.0 24.8 25.6 26.4 27.1 27.8 28.5 29.2 29.8 31.0 32.2 33.3 34.4 35.5 36.6 37.7 38.8 39.8 40.8 41.8 42.7 43.6 44.5 45.3 46.1 46.9 47.7 48.4 49.1 49.8 50.5 51.1 51.7 57,000 59,000 61,000 63,000 66,000 68,000 70,000 72,000 73,000 74,000 79,000 81,000 83,000 86,000 88,000 90,000 91,000 92,000 95,000 98,000 102,000 105,000 107,000 109,000 111,000 113,000 116,000 118,000 122,000 124,000 126,000 129,000 131,000 134,000 138,000 139,000 142,000 146,000 150,000 154,000 159,000 164,000 169,000 176,000 181,000 185,000 191,000 198,000 202,000 205,000 208,000 212,000 219,000 225,000 232,000 235,000 238,000 245,000 250,000 254,000 259,000 TENSILE STRENGTH HARDNESS Brinell Vickers 523 532 542 551 561 570 580 589 599 608 618 550 560 570 580 590 600 610 620 630 640 650 660 670 680 690 700 720 740 760 780 800 820 840 860 880 900 920 940 Rockwell HRB HRC 52.3 53.0 53.6 54.1 54.7 55.2 55.7 56.3 56.8 57.3 57.8 58.3 58.8 59.2 59.7 60.1 61.0 61.8 62.5 63.3 64.0 64.7 65.3 65.9 66.4 67.0 67.5 68.0 PSI Tap Compass TENSILE STRENGTH HARDNESS 264,000 269,000 274,000 279,000 284,000 287,000 292,000 294,000 304,000 310,000 315,000 326,000 * Figures listed are approximate. Actual comversoins may vary by material amd alloy content. PSI (pound / in2) = N/mm2 x 145.0377 N/mm2 = pound / in2 ÷ 145.0377 21 22 General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys Titanium or Nickel Cut Taps General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys Titanium or Nickel 23 YELLOW RING CUT TAPS sæ4HROUGHæHOLE æææ5.# æææ5.& æææ-ETRICæ æææ-ETRICæFINE 0AGEæ 0AGEæ 0AGEæ 0AGEæ sæ"LINDæHOLE æææ5.# æææ5.& æææ-ETRICæ æææ-ETRICæFINE 0AGEæ 0AGEæ 0AGEæ 0AGEæ Note: Items marked as International Stock may become stocked in USA if sufficient volume is recognized. Recommended Tapping Speeds Material Hardness SFM HRC Brinell Bright finish Hard coated -- < 180 38 - 50 50 - 90 < 20 < 230 20 - 40 35 - 80 General Purpose ANSI length - ANSI shank UNC Series 3901 - Cobalt, UNC, spiral point, bright finish Series 3961 - Cobalt, UNC, spiral point, MolyGlide® coated 2B Class of Fit Cut Taps Through Hole 0° Helix Plug Tap Chamfer Lead B · 3.5 - 5 No. Shank dia. Square Size Overall Length 2B Approx. Series Series Order Size Flutes inch inch inch Limits 3901 3961 No. 4-40 3 0.141 0.110 1.882 H2/H3 5-40 3 0.141 0.110 1.941 H2/H3 6-32 3 0.141 0.110 2.000 H3/H4 l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l 2.845 DIN 371 DIN 376 Approx. Series Series 878 8-32 3 0.168 0.131 2.130 H3/H4 10-24 3 0.194 0.152 2.382 H3/H4 12-24 3 0.220 0.165 2.382 H3/H4 1/4-20 3 0.255 0.191 2.500 H4/H5 5/16-18 3 0.318 0.238 2.720 H4/H5 3/8-16 3 0.381 0.286 2.941 H5/H6 7/16-14 3 0.323 0.242 3.157 H5/H6 1/2-13 3 0.367 0.275 3.381 H5/H6 9/16-12 3 0.429 0.322 3.591 H5/H6 5/8-11 3 0.480 0.360 3.811 H5/H6 3/4-10 4 0.590 0.442 4.252 H5/H6 7/8-9 4 0.697 0.523 4.689 H6/H7 1-8 4 0.800 0.600 5.130 H6/H7 3.175 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 14.288 15.875 19.050 22.225 25.400 DIN length - DIN shank Series 873 - Cobalt, UNC, spiral point, bright finish, DIN 371 Series 878 - Cobalt, UNC, spiral point, bright finish, DIN 376 No. 26 Bright Shank dia. Square Size Overall Length 2B Size Flutes mm mm mm Limits 873 2-56 3 2.800 2.100 45.000 H2/H3 3-48 3 2.800 2.100 50.000 H2/H3 4-40 3 3.500 2.700 56.000 H2/H3 5-40 3 3.500 2.700 56.000 H2/H3 6-32 3 4.000 3.000 56.000 H3/H4 8-32 3 4.500 3.400 63.000 H3/H4 10-24 3 6.000 4.900 70.000 H3/H4 12-24 3 6.000 4.900 80.000 H3/H4 1/4-20 3 7.000 5.500 80.000 H4/H5 5/16-18 3 8.000 6.200 90.000 H4/H5 l l l l l l l l l l l 3/8-16 3 9.000 7.000 100.000 H5/H6 7/16-14 3 8.000 6.200 100.000 H5/H6 1/2-13 3 9.000 7.000 110.000 H5/H6 9/16-12 3 11.000 9.000 110.000 H5/H6 5/8-11 3 12.000 9.000 110.000 H5/H6 3/4-10 4 14.000 11.000 125.000 H5/H6 7/8-9 4 18.000 14.500 140.000 H6/H7 1-8 4 18.000 14.500 160.000 H6/H7 1 1/4-7 4 22.000 18.000 180.000 H7/H8 1 1/2-6 4 32.000 24.000 200.000 H7/H8 Steam Oxide TiN TiCN MolyGlide® TiAlN Order No. 2.184 2.515 2.845 3.175 3.505 4.166 4.826 5.486 6.350 7.938 9.525 l l ° l ° ° ° l ° AlCrN 11.113 12.700 14.288 15.875 19.050 22.225 25.400 31.750 38.100 FIREX® General Purpose ANSI length - ANSI shank Series 3902 - Cobalt, UNF, spiral point, bright finish Series 3962 - Cobalt, UNF, spiral point, MolyGlide® coated UNF 2B No. Shank dia. Square Size Overall Length Size Flutes inch inch inch Limits 3902 3962 No. 4-48 3 0.141 0.110 1.882 H2/H3 3 0.141 0.110 1.941 H2/H3 6-40 3 0.141 0.110 2.000 H2/H3 8-36 3 0.168 0.131 2.130 H2/H3 10-32 3 0.194 0.152 2.382 H3/H4 12-28 3 0.220 0.165 2.382 H3/H4 l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l 2.845 5-44 Approx. Series Series Order 3 0.255 0.191 2.500 H3/H4 3 0.318 0.238 2.720 H3/H4 3/8-24 3 0.381 0.286 2.941 H3/H4 7/16-20 3 0.323 0.242 3.157 H4/H5 1/2-20 3 0.367 0.275 3.381 H4/H5 9/16-18 3 0.429 0.322 3.591 H4/H5 5/8-18 3 0.480 0.360 3.811 H4/H5 3/4-16 4 0.590 0.442 4.252 H5/H6 7/8-14 4 0.697 0.523 4.689 H6/H7 1-12 4 0.800 0.600 5.130 H6/H7 3.175 3.505 4.166 4.826 Through Hole 5.486 6.350 7.938 Cut Taps 1/4-28 5/16-24 2B Class of Fit 0° Helix 9.525 11.113 12.700 14.288 Plug Tap Chamfer Lead 15.875 19.050 22.225 25.400 B · 3.5 - 5 DIN length - DIN shank Series 908 - Cobalt, UNF, spiral point, bright finish, DIN 374 Size 2B No. Shank dia. Square Size Overall Length Approx. Series Order Flutes mm mm mm Limits 908 No. l ° ° ° l ° l l l l l ° l ° l ° ° 2.845 4-48 3 2.200 n.a. 56.000 H2/H3 5-44 3 2.500 2.100 56.000 H2/H3 6-40 3 2.500 2.100 56.000 H2/H3 8-36 3 2.800 2.100 63.000 H2/H3 10-32 3 3.500 2.700 70.000 H3/H4 12-28 3 4.000 3.000 80.000 H3/H4 1/4-28 3 4.500 3.400 80.000 H3/H4 5/16-24 3 6.000 4.900 90.000 H3/H4 3/8-24 3 7.000 5.500 90.000 H3/H4 7/16-20 3 8.000 6.200 90.000 H4/H5 1/2-20 3 9.000 7.000 100.000 H4/H5 9/16-18 3 11.000 9.000 100.000 H4/H5 5/8-18 3 12.000 9.000 100.000 H4/H5 3/4-16 4 14.000 11.000 110.000 H5/H6 7/8-14 4 18.000 14.500 125.000 H6/H7 1 1/8-12 4 22.000 18.000 150.000 H6/H7 1 1/4-12 4 22.000 18.000 150.000 H6/H7 ● 53!æ3TOCK DIN 374 ❍ )NTERNATIONALæ3TOCKææWKS 3.175 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 14.288 15.875 19.050 22.225 28.575 31.750 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 27 General Purpose ANSI length - ANSI shank METRIC Series 3900 - Cobalt, Metric, spiral point, bright finish Series 3960 - Cobalt, Metric, spiral point, MolyGlide® coated ISO2 (6H) Class of Fit Cut Taps Through Hole 0° Helix Plug Tap Chamfer Lead B · 3.5 - 5 No. Shank dia. Square Size Overall Length Size Flutes inch inch M2 X 0.40 3 0.141 M3 X 0.50 3 0.141 M4 X 0.70 3 M5 X 0.80 Approx. Series Series Order inch Limits 3900 3960 No. 0.110 1.752 D2/D3 1.941 D2/D3 0.168 0.131 2.130 D3/D4 3 0.194 0.152 2.382 D3/D4 M6 X 1.00 3 0.255 0.191 2.500 D4/D5 M8 X 1.25 3 0.318 0.238 2.720 D4/D5 M10 X 1.50 3 0.381 0.286 2.941 D4/D5 M12 X 1.75 3 0.367 0.275 3.381 D5/D6 M14 X 2.00 3 0.429 0.322 3.591 D5/D6 M16 X 2.00 3 0.480 0.360 3.811 D6/D7 M18 X 2.50 4 0.542 0.406 4.031 D6/D7 M20 X 2.50 4 0.652 0.489 4.469 D6/D7 l l l l l l l l l l l l l l l l l l l l l l l l 2.000 0.110 Bright 3.000 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 18.000 20.000 DIN length - DIN shank Series 803 - Cobalt, Metric, spiral point, bright finish, DIN 371 No. 28 ISO2 (6H) Shank dia. Square Size Overall Length ISO2 (6H) DIN 371 Approx. Series Order Size Flutes mm mm mm Limits 803 No. M1.4 X 0.30 2 2.500 2.100 40.000 D2/D3 M1.6 X 0.35 2 2.500 2.100 40.000 D2/D3 M1.7 X 0.35 2 2.500 2.100 40.000 D2/D3 M1.8 X 0.35 2 2.500 2.100 40.000 D2/D3 M2 X 0.40 3 2.800 2.100 45.000 D2/D3 M2.2 X 0.45 3 2.800 2.100 45.000 D2/D3 M2.3 X 0.40 3 2.800 2.100 45.000 D2/D3 M2.5 X 0.45 3 2.800 2.100 50.000 D2/D3 ° ° l l l ° ° ° ° l ° ° l l l l l 1.400 M2.6 X 0.45 3 2.800 2.100 50.000 D2/D3 M3 X 0.50 3 3.500 2.700 56.000 D2/D3 M3.5 X 0.60 3 4.000 3.000 56.000 D3/D4 M4 X 0.70 3 4.500 3.400 63.000 D3/D4 M5 X 0.80 3 6.000 4.900 70.000 D3/D4 M6 X 1.00 3 6.000 4.900 80.000 D4/D5 M7 X 1.00 3 7.000 5.500 80.000 D4/D5 M8 X 1.25 3 8.000 6.200 90.000 D4/D5 M10 X 1.50 3 10.000 8.000 100.000 D4/D5 Steam Oxide TiN TiCN MolyGlide® TiAlN AlCrN 1.600 1.700 1.800 2.000 2.200 2.300 2.500 2.600 3.000 3.500 4.000 5.000 6.000 7.000 8.000 10.000 FIREX® General Purpose DIN length - DIN shank Series 815 - Cobalt, Metric, spiral point, bright finish, DIN 376 No. Shank dia. Square Size Overall Length ISO2 (6H) METRIC DIN 376 Approx. Series Order Size Flutes mm mm mm Limits 815 No. M1.6 x 0.35 2 1.200 n.a. 40.000 D2/D3 M1.8 x 0.35 2 1.200 n.a. 40.000 D2/D3 M2 x 0.40 3 1.400 n.a. 45.000 D2/D3 M2.5 x 0.45 3 1.800 n.a. 50.000 D2/D3 M2.6 x 0.45 3 1.800 n.a. 50.000 D2/D3 M3 x 0.50 3 2.200 n.a. 56.000 D2/D3 ° ° ° l ° l l l ° ° ° l l l ° ° l l l ° ° ° l 1.600 3 2.500 2.100 56.000 D3/D4 M4 x 0.70 3 2.800 2.100 63.000 D3/D4 M5 x 0.80 3 3.500 2.700 70.000 D3/D4 M6 x 1.00 3 4.500 3.400 80.000 D4/D5 M7 x 1.00 3 5.500 4.300 80.000 D4/D5 M8 x 1.25 3 6.000 4.900 90.000 D4/D5 M10 x 1.50 3 7.000 5.500 100.000 D4/D5 M12 x 1.75 3 9.000 7.000 110.000 D5/D6 M14 x 2.00 3 11.000 9.000 110.000 D5/D6 M16 x 2.00 3 12.000 9.000 110.000 D6/D7 M18 x 2.50 4 14.000 11.000 125.000 D6/D7 M20 x 2.50 4 16.000 12.000 140.000 D6/D7 M22 x 2.50 4 18.000 14.500 140.000 D6/D7 M24 x 3.00 4 18.000 14.500 160.000 D7/D8 M27 x 3.00 4 20.000 16.000 160.000 D7/D8 M30 x 3.50 4 22.000 18.000 180.000 D8/D9 M36 x 4.00 4 28.000 22.000 200.000 D8/D9 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 1.800 2.000 2.500 2.600 Through Hole 3.000 Cut Taps M3.5 x 0.60 ISO2 (6H) Class of Fit 3.500 4.000 0° Helix 5.000 6.000 7.000 8.000 Plug Tap Chamfer Lead 10.000 12.000 14.000 16.000 18.000 B · 3.5 - 5 20.000 22.000 24.000 27.000 30.000 36.000 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 29 General Purpose DIN length - DIN shank METRIC FINE Cut Taps ISO2 (6H) Class of Fit Through Hole 0° Helix Plug Tap Chamfer Lead B · 3.5 - 5 30 Bright Series 827 - Cobalt, Metric Fine, spiral point, bright finish, DIN 374 No. Shank dia. Square Size Overall Length ISO2 (6H) DIN 374 Approx. Series Order Size Flutes mm mm mm Limits 827 No. M3 x 0.35 M3.5 x 0.35 3 3 2.200 2.500 n.a. 2.100 56.000 56.000 D2/D3 D3/D4 M4 x 0.50 3 2.800 2.100 63.000 D3/D4 M5 x 0.50 3 3.500 2.700 70.000 D3/D4 M6 x 0.50 3 4.500 3.400 80.000 D3/D4 M6 x 0.75 3 4.500 3.400 80.000 D3/D4 M7 x 0.75 3 5.500 4.300 80.000 D3/D4 M8 x 0.50 3 6.000 4.900 80.000 D3/D4 M8 x 0.75 3 6.000 4.900 80.000 D3/D4 M8 x 1.00 3 6.000 4.900 90.000 D4/D5 M9 x 1.00 3 7.000 5.500 90.000 D4/D5 M10 x 0.75 3 7.000 5.500 90.000 D4/D5 M10 x 1.00 3 7.000 5.500 90.000 D4/D5 M10 x 1.25 3 7.000 5.500 100.000 D4/D5 M11 x 1.00 3 8.000 6.200 90.000 D4/D5 M12 x 1.00 3 9.000 7.000 100.000 D4/D5 M12 x 1.25 3 9.000 7.000 100.000 D4/D5 M12 x 1.50 3 9.000 7.000 100.000 D5/D6 M14 x 1.00 3 11.000 9.000 100.000 D4/D5 M14 x 1.25 3 11.000 9.000 100.000 D4/D5 M14 x 1.50 3 11.000 9.000 100.000 D4/D5 M15 x 1.00 3 12.000 9.000 100.000 D4/D5 M15 x 1.50 3 12.000 9.000 100.000 D4/D5 M16 x 1.00 3 12.000 9.000 100.000 D4/D5 M16 x 1.50 3 12.000 9.000 100.000 D4/D5 M18 x 1.00 4 14.000 11.000 110.000 D4/D5 M18 x 1.50 4 14.000 11.000 110.000 D4/D5 M18 x 2.00 4 14.000 11.000 125.000 D6/D7 M20 x 1.00 4 16.000 12.000 125.000 D6/D7 M20 x 1.50 4 16.000 12.000 125.000 D6/D7 M20 x 2.00 4 16.000 12.000 140.000 D6/D7 M22 x 1.00 4 18.000 14.500 125.000 D6/D7 M22 x 1.50 4 18.000 14.500 125.000 D6/D7 M22 x 2.00 4 18.000 14.500 140.000 D6/D7 M24 x 1.00 4 18.000 14.500 140.000 D6/D7 M24 x 1.50 4 18.000 14.500 140.000 D6/D7 M24 x 2.00 4 18.000 14.500 140.000 D6/D7 M26 x 1.50 4 18.000 14.500 140.000 D7/D8 M27 x 1.50 4 20.000 16.000 140.000 D7/D8 M27 x 2.00 4 20.000 16.000 140.000 D7/D8 M28 x 1.50 4 20.000 16.000 140.000 D7/D8 M30 x 1.50 4 22.000 18.000 150.000 D7/D8 M30 x 2.00 4 22.000 18.000 150.000 D7/D8 M32 x 1.50 4 22.000 18.000 150.000 D7/D8 M33 x 1.50 4 25.000 20.000 160.000 D7/D8 M35 x 1.50 M36 x 1.50 4 4 28.000 28.000 22.000 22.000 170.000 170.000 D8/D9 D8/D9 l ° l l l l l l l l l l l l l l l l l l l ° ° ° ° ° l l l ° ° ° ° ° ° ° ° l ° ° ° l ° ° ° ° ° 3.002 3.502 Steam Oxide TiN TiCN MolyGlide® TiAlN AlCrN 4.003 5.003 6.003 6.004 7.004 8.003 8.004 8.005 9.005 10.004 10.005 10.006 11.005 12.005 12.006 12.007 14.005 14.006 14.007 15.005 15.007 16.005 16.007 18.005 18.007 18.008 20.005 20.007 20.008 22.005 22.007 22.008 24.005 24.007 24.008 26.007 27.007 27.008 28.007 30.007 30.008 32.007 33.007 35.007 36.007 FIREX® General Purpose DIN length - DIN shank Series 830 - Cobalt, Metric Fine, straight flute, bright finish, DIN 374 No. Shank dia. Square Size Overall Length ISO2 (6H) DIN 374 Approx. Series Order Size Flutes mm mm mm Limits 830 No. M3 x 0.35 M3.5 x 0.35 3 3 2.200 2.500 2.100 56.000 56.000 D2/D3 D3/D4 M4 x 0.50 3 2.800 2.100 63.000 D3/D4 M5 x 0.50 3 3.500 2.700 70.000 D3/D4 M6 x 0.50 3 4.500 3.400 80.000 D3/D4 M6 x 0.75 3 4.500 3.400 80.000 D3/D4 M7 x 0.75 3 5.500 4.300 80.000 D3/D4 M8 x 0.50 3 6.000 4.900 80.000 D3/D4 M8 x 0.75 3 6.000 4.900 80.000 D3/D4 M8 x 1.00 3 6.000 4.900 90.000 D4/D5 M9 x 1.00 3 7.000 5.500 90.000 D4/D5 M10 x 0.75 3 7.000 5.500 90.000 D4/D5 M10 x 1.00 3 7.000 5.500 90.000 D4/D5 M10 x 1.25 3 7.000 5.500 100.000 D4/D5 M11 x 1.00 3 8.000 6.200 90.000 D4/D5 M12 x 1.00 3 9.000 7.000 100.000 D4/D5 M12 x 1.25 3 9.000 7.000 100.000 D4/D5 M12 x 1.50 3 9.000 7.000 100.000 D5/D6 M14 x 1.00 3 11.000 9.000 100.000 D4/D5 M14 x 1.25 3 11.000 9.000 100.000 D4/D5 M14 x 1.50 3 11.000 9.000 100.000 D4/D5 M15 x 1.00 3 12.000 9.000 100.000 D4/D5 M16 x 1.00 3 12.000 9.000 100.000 D4/D5 M16 x 1.50 3 12.000 9.000 100.000 D4/D5 M18 x 1.00 4 14.000 11.000 110.000 D4/D5 M18 x 1.50 4 14.000 11.000 110.000 D4/D5 M18 x 2.00 4 14.000 11.000 125.000 D6/D7 M20 x 1.00 4 16.000 12.000 125.000 D6/D7 M20 x 1.50 4 16.000 12.000 125.000 D6/D7 M20 x 2.00 4 16.000 12.000 140.000 D6/D7 M22 x 1.00 4 18.000 14.500 125.000 D6/D7 M22 x 1.50 4 18.000 14.500 125.000 D6/D7 M24 x 1.00 4 18.000 14.500 140.000 D6/D7 M24 x 1.50 4 18.000 14.500 140.000 D6/D7 M24 x 2.00 4 18.000 14.500 140.000 D6/D7 M26 x 1.50 4 18.000 14.500 140.000 D7/D8 M27 x 1.50 4 20.000 16.000 140.000 D7/D8 M27 x 2.00 4 20.000 16.000 140.000 D7/D8 M28 x 1.50 4 20.000 16.000 140.000 D7/D8 M30 x 1.50 4 22.000 18.000 150.000 D7/D8 M30 x 2.00 4 22.000 18.000 150.000 D7/D8 M32 x 1.50 4 22.000 18.000 150.000 D7/D8 M35 x 1.50 6 28.000 22.000 170.000 D8/D9 M36 x 1.50 M38 x 1.50 6 6 28.000 28.000 22.000 22.000 170.000 170.000 D8/D9 D8/D9 ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° l ° ° l ° ° ° ° ° ° ° ° l ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° 3.002 3.502 ❍ )NTERNATIONALæ3TOCKææWKS ISO2 (6H) Class of Fit 4.003 5.003 6.003 6.004 7.004 8.003 Through or Blind Hole Cut Taps ● 53!æ3TOCK METRIC FINE 8.004 8.005 0° Helix 9.005 10.004 10.005 10.006 11.005 Chamfer Lead 12.005 12.006 12.007 14.005 C·2-3 14.006 14.007 15.005 16.005 16.007 18.005 18.007 18.008 20.005 20.007 20.008 22.005 22.007 24.005 24.007 24.008 26.007 27.007 27.008 28.007 30.007 30.008 32.007 35.007 36.007 38.007 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 31 General Purpose ANSI length - ANSI shank UNC Series 3904 - Cobalt, UNC, 40° helix, bright finish Series 3964 - Cobalt, UNC, 40° helix, MolyGlide® coated 2B Class of Fit Cut Taps Blind Hole 40° Helix Semi-bottoming Chamfer Lead C · 2-3 No. Shank dia. Square Size Overall Length 2B Approx. Series Series Order Size Flutes inch inch inch Limits 3904 3964 No. 4-40 3 0.141 0.110 1.882 H2/H3 3 0.141 0.110 1.941 H2/H3 6-32 3 0.141 0.110 2.000 H3/H4 8-32 3 0.168 0.131 2.130 H3/H4 10-24 3 0.194 0.152 2.382 H3/H4 12-24 3 0.220 0.165 2.382 H3/H4 1/4-20 3 0.255 0.191 2.500 H4/H5 5/16-18 3 0.318 0.238 2.720 H4/H5 3/8-16 3 0.381 0.286 2.941 H5/H6 7/16-14 3 0.323 0.242 3.157 H5/H6 l l l l l l l l l l l l l l l l 2.845 5-40 l l l l l l l l l l l l l l l l DIN 371 DIN 376 Approx. Series Series 881 1/2-13 3 0.367 0.275 3.381 H5/H6 9/16-12 3 0.429 0.322 3.591 H5/H6 5/8-11 3 0.480 0.360 3.811 H5/H6 3/4-10 4 0.590 0.442 4.252 H5/H6 7/8-9 4 0.697 0.523 4.689 H6/H7 1-8 4 0.800 0.600 5.130 H6/H7 3.175 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 14.288 15.875 19.050 22.225 25.400 DIN length - DIN shank Series 876 - Cobalt, UNC, 40° helix, bright finish, DIN 371 Series 881 - Cobalt, UNC, 40° helix, bright finish, DIN 376 No. 32 Bright Shank dia. Square Size Overall Length 2B Size Flutes mm mm mm Limits 876 2-56 3 2.800 2.100 45.000 H2/H3 4-40 3 3.500 2.700 56.000 H2/H3 6-32 3 4.000 3.000 56.000 H3/H4 8-32 3 4.500 3.400 63.000 H3/H4 10-24 3 6.000 4.900 70.000 H3/H4 1/4-20 3 7.000 5.500 80.000 H4/H5 5/16-18 3 8.000 6.200 90.000 H4/H5 3/8-16 3 9.000 7.000 100.000 H5/H6 ° l l ° ° ° l ° 7/16-14 3 8.000 6.200 100.000 H5/H6 1/2-13 3 9.000 7.000 110.000 H5/H6 9/16-12 3 11.000 9.000 110.000 H5/H6 5/8-11 3 12.000 9.000 110.000 H5/H6 3/4-10 4 14.000 11.000 125.000 H5/H6 7/8-9 4 18.000 14.500 140.000 H6/H7 1-8 4 18.000 14.500 160.000 H6/H7 Steam Oxide TiN TiCN MolyGlide® TiAlN Order No. 2.184 2.845 3.505 4.166 4.826 6.350 7.938 9.525 ° l l ° ° l ° AlCrN 11.113 12.700 14.288 15.875 19.050 22.225 25.400 FIREX® General Purpose ANSI length - ANSI shank Series 3905 - Cobalt, UNF, 40° helix, bright finish Series 3965 - Cobalt, UNF, 40° helix, MolyGlide® coated No. Shank dia. Square Size UNF 2B Overall Length Approx. Series Series Order Size Flutes inch inch inch Limits 3905 3965 No. 4-48 3 0.141 0.110 1.882 H2/H3 5-44 3 0.141 0.110 1.941 H2/H3 6-40 3 0.141 0.110 2.000 H2/H3 l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l 2.845 8-36 3 0.168 0.131 2.130 H2/H3 10-32 3 0.194 0.152 2.382 H3/H4 3 0.220 0.165 2.382 H3/H4 3 0.255 0.191 2.500 H3/H4 5/16-24 3 0.318 0.238 2.720 H3/H4 3/8-24 3 0.381 0.286 2.941 H3/H4 7/16-20 3 0.323 0.242 3.157 H4/H5 1/2-20 3 0.367 0.275 3.381 H4/H5 9/16-18 3 0.429 0.322 3.591 H4/H5 5/8-18 3 0.480 0.360 3.811 H4/H5 3/4-16 4 0.590 0.442 4.252 H5/H6 7/8-14 4 0.697 0.523 4.689 H6/H7 1-12 4 0.800 0.600 5.130 H6/H7 3.175 3.505 4.166 Blind Hole 4.826 5.486 6.350 Cut Taps 12-28 1/4-28 2B Class of Fit 40° Helix 7.938 9.525 11.113 12.700 Semi-bottoming Chamfer Lead 14.288 15.875 19.050 22.225 25.400 C · 2-3 DIN length - DIN shank Series 911 - Cobalt, UNF, 40° helix, bright finish, DIN 374 No. Shank dia. Square Size Overall Length 2B DIN 374 Approx. Series Order Size Flutes mm mm mm Limits 911 No. 3-56 3 1.800 na 50.000 H2/H3 2.515 4-48 3 2.200 na 56.000 H2/H3 5-44 3 2.500 2.100 56.000 H2/H3 6-40 3 2.500 2.100 56.000 H2/H3 ° ° ° ° l l ° ° l ° ° l ° l ° 8-36 3 2.800 2.100 63.000 H2/H3 10-32 3 3.500 2.700 70.000 H3/H4 1/4-28 3 4.500 3.400 80.000 H3/H4 5/16-24 3 6.000 4.900 90.000 H3/H4 3/8-24 3 7.000 5.500 90.000 H3/H4 7/16-20 3 8.000 6.200 90.000 H4/H5 1/2-20 3 9.000 7.000 100.000 H4/H5 9/16-18 3 11.000 9.000 100.000 H4/H5 5/8-18 3 12.000 9.000 100.000 H4/H5 3/4-16 4 14.000 11.000 110.000 H5/H6 7/8-14 4 18.000 14.500 125.000 H6/H7 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 2.845 3.175 3.505 4.166 4.826 6.350 7.938 9.525 11.113 12.700 14.288 15.875 19.050 22.225 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 33 General Purpose ANSI length - ANSI shank METRIC Series 3903 - Cobalt, Metric, 40° helix, bright finish Series 3963 - Cobalt, Metric, 40° helix, MolyGlide® coated ISO2 (6H) Class of Fit Cut Taps Blind Hole 40° Helix Semi-bottoming Chamfer Lead No. Shank dia. Square Size Overall Length Size Flutes inch inch M2 X 0.40 3 0.141 M3 X 0.50 3 0.141 M4 X 0.70 3 M5 X 0.80 ISO2 (6H) Approx. Series Series Order inch Limits 3903 3963 No. 0.110 1.752 D2/D3 1.941 D2/D3 0.168 0.131 2.130 D3/D4 3 0.194 0.152 2.382 D3/D4 M6 X 1.00 3 0.255 0.191 2.500 D4/D5 M8 X 1.25 3 0.318 0.238 2.720 D4/D5 M10 X 1.50 3 0.381 0.286 2.941 D4/D5 M12 X 1.75 3 0.367 0.275 3.381 D5/D6 M14 X 2.00 3 0.429 0.322 3.591 D5/D6 M16 X 2.00 3 0.480 0.360 3.811 D6/D7 M18 X 2.50 4 0.542 0.406 4.031 D6/D7 M20 X 2.50 4 0.652 0.489 4.469 D6/D7 l l l l l l l l l l l l l l l l l l l l l l l l 2.000 0.110 DIN 376 DIN 371 Approx. Series Series 822 810 No. l l ° ° ° ° ° l l ° l l 2.000 3.000 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 18.000 20.000 DIN length - DIN shank Series 822 - Cobalt, Metric, 40° helix, bright finish, DIN 376 Series 810 - Cobalt, Metric, 40° helix, bright finish, DIN 371 C · 2-3 No. 34 Bright Shank dia. Square Size Overall Length ISO2 (6H) Size Flutes mm mm mm Limits M2 x 0.40 3 2.800 2.100 45.000 D2/D3 M2.2 x 0.45 3 2.800 2.100 45.000 D2/D3 M2.3 x 0.40 3 2.800 2.100 45.000 D2/D3 M2.5 x 0.45 3 2.800 2.100 50.000 D2/D3 M2.6 x 0.45 3 2.800 2.100 50.000 D2/D3 M3 x 0.50 3 3.500 2.700 56.000 D2/D3 M3.5 x 0.60 3 4.000 3.000 56.000 D3/D4 M4 x 0.70 3 4.500 3.400 63.000 D3/D4 M5 x 0.80 3 6.000 4.900 70.000 D3/D4 M6 x 1.00 3 6.000 4.900 80.000 D4/D5 M8 x 1.25 3 8.000 6.200 90.000 D4/D5 M10 x 1.50 3 10.000 8.000 100.000 D4/D5 M3 x 0.50 3 2.200 n.a. 56.000 D2/D3 M3.5 x 0.60 3 2.500 2.100 56.000 D3/D4 M4 x 0.70 3 2.800 2.100 63.000 D3/D4 M5 x 0.80 3 3.500 2.700 70.000 D3/D4 M6 x 1.00 3 4.500 3.400 80.000 D4/D5 M7 x 1.00 3 5.500 4.300 80.000 D4/D5 M8 x 1.25 3 6.000 4.900 90.000 D4/D5 M10 x 1.50 3 7.000 5.500 100.000 D4/D5 M12 x 1.75 3 9.000 7.000 110.000 D5/D6 M14 x 2.00 3 11.000 9.000 110.000 D5/D6 M16 x 2.00 3 12.000 9.000 110.000 D6/D7 M18 x 2.50 4 14.000 11.000 125.000 D6/D7 Steam Oxide TiN TiCN MolyGlide® TiAlN ° ° l ° ° l l l ° ° ° ° Order 2.200 2.300 2.500 2.600 3.000 3.500 4.000 5.000 6.000 8.000 10.000 3.000 3.500 4.000 5.000 6.000 7.000 8.000 10.000 12.000 14.000 16.000 18.000 AlCrN FIREX® General Purpose DIN length - DIN shank (cont’d) Series 822 - Cobalt, Metric, 40° helix, bright finish, DIN 376 Series 810 - Cobalt, Metric, 40° helix, bright finish, DIN 371 Size No. Shank dia. Square Size Overall Length Flutes mm mm mm DIN 376 DIN 371 Approx. Series Series Order Limits 822 810 No. ° l ° ° ° ISO2 (6H) M20 x 2.50 4 16.000 12.000 140.000 D6/D7 M22 x 2.50 4 18.000 14.500 140.000 D6/D7 M24 x 3.00 4 18.000 14.500 160.000 D7/D8 M27 x 3.00 4 20.000 16.000 160.000 D7/D8 M30 x 3.50 4 22.000 18.000 180.000 D8/D9 20.000 22.000 ISO2 (6H) Class of Fit 24.000 27.000 30.000 Cut Taps Blind Hole DIN length - DIN shank Series 834 - Cobalt, Metric Fine, 40° helix, bright finish, DIN 374 Series 833 - Cobalt, Metric Fine, 15° helix, bright finish, DIN 374 DIN 374 Approx. Series Series Order 833 No. Shank dia. Square Size Overall Length Size Flutes mm mm mm Limits 834 M3 x 0.35 3 2.200 n.a. 56.000 D2/D3 ° ° ° ° ° ° ° ° ° ° l l ° ° l l ° l l ° M3.5 x 0.35 3 2.500 2.100 56.000 D3/D4 M4 x 0.50 3 2.800 2.100 63.000 D3/D4 M5 x 0.50 3 3.500 2.700 70.000 D3/D4 M6 x 0.50 3 4.500 3.400 80.000 D3/D4 M6 x 0.75 3 4.500 3.400 80.000 D3/D4 M8 x 0.75 3 6.000 4.900 80.000 D3/D4 M8 x 1.00 3 6.000 4.900 90.000 D4/D5 M10 x 1.00 3 7.000 5.500 90.000 D4/D5 M10 x 1.25 3 7.000 5.500 100.000 D4/D5 M12 x 1.00 3 9.000 7.000 100.000 D4/D5 M12 x 1.25 3 9.000 7.000 100.000 D4/D5 M12 x 1.50 3 9.000 7.000 100.000 D5/D6 M14 x 1.00 3 11.000 9.000 100.000 D4/D5 M14 x 1.25 3 11.000 9.000 100.000 D4/D5 M14 x 1.50 3 11.000 9.000 100.000 D4/D5 M16 x 1.00 3 12.000 9.000 100.000 D4/D5 M16 x 1.50 3 12.000 9.000 100.000 D4/D5 M18 x 1.00 4 14.000 11.000 110.000 D4/D5 M18 x 1.50 4 14.000 11.000 110.000 D4/D5 M20 x 1.00 4 16.000 12.000 125.000 D6/D7 M20 x 1.50 4 16.000 12.000 125.000 D6/D7 M22 x 1.50 4 18.000 14.500 125.000 D6/D7 M24 x 1.50 4 18.000 14.500 140.000 D6/D7 M24 x 2.00 4 18.000 14.500 140.000 D6/D7 M26 x 1.50 4 18.000 14.500 140.000 D7/D8 M27 x 1.50 4 20.000 16.000 140.000 D7/D8 M27 x 2.00 4 20.000 16.000 140.000 D7/D8 M30 x 1.50 4 22.000 18.000 150.000 D7/D8 M30 x 2.00 4 22.000 18.000 150.000 D7/D8 ❍ )NTERNATIONALæ3TOCKææWKS 40° Helix 15° Helix DIN 374 ISO2 (6H) No. ● 53!æ3TOCK METRIC / METRIC FINE l l l ° ° ° ° ° ° 3.002 3.502 ° ° Semi-bottoming Chamfer Lead 4.003 5.003 6.003 ° ° ° l ° ° l ° l ° l ° l ° ° ° ° ° ° l ° ° ° ° ° 6.004 8.004 C · 2-3 8.005 10.005 10.006 12.005 12.006 12.007 14.005 14.006 14.007 16.005 16.007 18.005 18.007 20.005 20.007 22.007 24.007 24.008 26.007 27.007 27.008 30.007 30.008 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 35 sæ4HROUGHæHOLE GREEN RING CUT TAPS æææ5.# æææ5.& æææ-ETRIC æææ-ETRICæFINE 0AGEæ 0AGEæ 0AGEæ 0AGEæ sæ"LINDæHOLE æææ5.# æææ5.& æææ-ETRIC æææ-ETRICæFINE 0AGEæ 0AGEæ 0AGEæ 0AGEæ sæ/VERSIZED æææ4HROUGHæHOLE æææ"LINDæHOLE æææ 0AGEæ 0AGEæ sæ34)æ4APS æææ4HROUGHæHOLE æææ"LINDæHOLE æææ 0AGEæ 0AGEæ Note: Items marked as International Stock may become stocked in USA if sufficient volume is recognized. Recommended Tapping Speeds Material Hardness SFM HRC Brinell Bright finish Hard coated < 25 < 250 35 - 45 50 - 65 < 30 < 280 15 - 30 25 - 55 < 35 < 320 12 - 24 18 - 35 5NIVERSALæ!PPLICATIONSææ!LLOYEDææ5NALLOYEDæ3TEELS ANSI length - ANSI shank UNC Series 3913 - Cobalt, UNC, spiral point, bright finish Series 3916 - Cobalt, UNC, spiral point, TiN coated Series 3946 - Cobalt, UNC, spiral point, TiCN coated 2B Class of Fit No. Cut Taps Through Hole 0° Helix Plug Tap Chamfer Lead B · 3.5 - 5 Shank dia. Square Size Overall Length 2B Approx. Series Series Series Order Size Flutes inch inch inch Limits 3913 3916 3946 No. 2-56 3 0.141 0.110 1.751 H2/H3 3-48 3 0.141 0.110 1.811 H2/H3 4-40 3 0.141 0.110 1.882 H2/H3 5-40 3 0.141 0.110 1.941 H2/H3 6-32 3 0.141 0.110 2.000 H3/H4 8-32 3 0.168 0.131 2.130 H3/H4 10-24 3 0.194 0.152 2.382 H3/H4 12-24 3 0.220 0.165 2.382 H3/H4 l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l 2.184 1/4-20 3 0.255 0.191 2.500 H4/H5 5/16-18 3 0.318 0.238 2.720 H4/H5 3/8-16 3 0.381 0.286 2.941 H5/H6 7/16-14 3 0.323 0.242 3.157 H5/H6 1/2-13 4 0.367 0.275 3.381 H5/H6 5/8-11 4 0.480 0.360 3.811 H5/H6 3/4-10 4 0.590 0.442 4.252 H5/H6 7/8-9 4 0.697 0.523 4.689 H6/H7 1-8 4 0.800 0.600 5.130 H6/H7 1 1/4-7 4 1.021 0.766 5.748 H7/H8 1 1/2-6 6 1.233 0.925 6.378 H7/H8 2.515 2.845 3.175 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 15.875 19.050 22.225 25.400 31.750 38.100 DIN length - DIN shank Series 2881 - Cobalt, UNC, spiral point, steam oxide finish, DIN 371 Series 2883 - Cobalt, UNC, spiral point, steam oxide finish, DIN 376 Size 38 Bright No. Shank dia. Square Size Overall Length Flutes mm mm mm DIN 371 DIN 376 Approx. Series Series Order Limits 2881 2883 No. l ° ° l l l l l l 2B 4-40 3 3.500 2.700 56.000 H2/H3 5-40 3 3.500 2.700 56.000 H3/H4 6-32 3 4.000 3.000 56.000 H3/H4 8-32 3 4.500 3.400 63.000 H3/H4 10-24 3 6.000 4.900 70.000 H3/H4 12-24 3 6.000 4.900 80.000 H4/H5 1/4-20 3 7.000 5.500 80.000 H4/H5 5/16-18 3 8.000 6.200 90.000 H5/H6 3/8-16 3 10.000 7.000 100.000 H4/H5 7/16-14 3 8.000 6.200 100.000 H5/H6 1/2-13 3 9.000 7.000 110.000 H5/H6 5/8-11 3 12.000 9.000 110.000 H5/H6 3/4-10 4 14.000 11.000 125.000 H5/H6 7/8-9 4 18.000 14.500 140.000 H6/H7 1-8 4 18.000 14.500 160.000 H6/H7 Steam Oxide TiN TiCN MolyGlide TiAlN 2.845 3.175 3.505 4.166 4.826 5.486 6.350 7.938 9.525 ° ° ° ° ° l AlCrN 11.113 12.700 15.875 19.050 22.225 25.400 FIREX® 5NIVERSALæ!PPLICATIONSææ!LLOYEDææ5NALLOYEDæ3TEELS ANSI length - ANSI shank Series 3914 - Cobalt, UNF, spiral point, bright finish Series 3917 - Cobalt, UNF, spiral point, TiN coated Series 3947 - Cobalt, UNF, spiral point, TiCN coated Size UNF 2B No. Shank dia. Square Size Overall Length Approx. Series Series Series Order Flutes inch inch inch Limits 3914 3917 3947 No. l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l 2.184 3 0.141 0.110 1.751 H2/H3 3 0.141 0.110 1.811 H2/H3 4-48 3 0.141 0.110 1.882 H2/H3 5-44 3 0.141 0.110 1.941 H2/H3 6-40 3 0.141 0.110 2.000 H2/H3 8-36 3 0.168 0.131 2.130 H2/H3 10-32 3 0.194 0.152 2.382 H3/H4 12-28 3 0.220 0.165 2.382 H3/H4 1/4-28 3 0.255 0.191 2.500 H3/H4 5/16-24 3 0.318 0.238 2.720 H3/H4 3/8-24 3 0.381 0.286 2.941 H3/H4 7/16-20 3 0.323 0.242 3.157 H4/H5 1/2-20 4 0.367 0.275 3.381 H4/H5 5/8-18 4 0.480 0.360 3.811 H4/H5 3/4-16 4 0.590 0.442 4.252 H5/H6 7/8-14 4 0.697 0.523 4.689 H6/H7 1-12 4 0.800 0.600 5.130 H6/H7 1 1/4-12 4 1.021 0.766 5.748 H7/H8 1 1/2-12 6 1.233 0.925 6.378 H7/H8 2.515 2.845 3.175 Through Hole 3.505 4.166 Cut Taps 2-64 3-56 2B Class of Fit 0° Helix 4.826 5.486 6.350 7.938 9.525 Plug Tap Chamfer Lead 11.113 12.700 15.875 19.050 B · 3.5 - 5 22.225 25.400 31.750 38.100 NEW! DIN length - DIN shank Series 2885 - Cobalt, UNF, spiral point, steam oxide finish, DIN 374 Size No. Shank dia. Square Size Overall Length Flutes mm mm mm 2B Approx. Series Order Limits 2885 No. l l l l l l l ° ° 2.845 4-48 3 2.200 n.a. 56.000 H2/H3 6-40 3 2.500 2.100 56.000 H2/H3 10-32 3 3.500 2.700 70.000 H3/H4 12-28 3 4.000 3.000 80.000 H3/H4 1/4-28 3 4.500 3.400 80.000 H3/H4 3/8-24 3 7.000 5.500 90.000 H3/H4 5/8-18 3 12.000 9.000 100.000 H4/H5 7/8-14 4 18.000 14.500 125.000 H6/H7 1-12 4 18.000 14.500 140.000 H6/H7 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS DIN 374 3.505 4.826 5.486 6.350 9.525 15.875 22.225 25.400 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 39 5NIVERSALæ!PPLICATIONSææ!LLOYEDææ5NALLOYEDæ3TEELS ANSI length - ANSI shank METRIC Series 3912 - Cobalt, Metric, spiral point, bright finish Series 3915 - Cobalt, Metric, spiral point, TiN coated Series 3945 - Cobalt, Metric, spiral point, TiCN coated ISO2 (6H) Class of Fit Size Cut Taps Through Hole 0° Helix Plug Tap Chamfer Lead No. Shank dia. Square Size Overall Length Flutes inch inch inch ISO2 (6H) Approx. Series Series Series Limits 3912 3915 3945 No. l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l 2.000 M2 X 0.40 3 0.141 0.110 1.752 D2/D3 M3 X 0.50 3 0.141 0.110 1.941 D2/D3 M4 X 0.70 3 0.168 0.131 2.130 D3/D4 M5 X 0.80 3 0.194 0.152 2.382 D3/D4 M6 X 1.00 3 0.255 0.191 2.500 D4/D5 M8 X 1.25 3 0.318 0.238 2.720 D4/D5 M10 X 1.50 3 0.381 0.286 2.941 D4/D5 M12 X 1.75 4 0.367 0.275 3.381 D5/D6 M14 X 2.00 4 0.429 0.322 3.591 D5/D6 M16 X 2.00 4 0.480 0.360 3.811 D6/D7 M18 X 2.50 4 0.542 0.406 4.031 D6/D7 M20 X 2.50 4 0.652 0.489 4.469 D6/D7 Order 3.000 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 18.000 20.000 B · 3.5 - 5 DIN length - DIN shank Series 2876 - Cobalt, Metric, spiral point, steam oxide finish, DIN 371 No. 40 Bright Shank dia. Square Size Overall Length ISO2 (6H) DIN 371 Approx. Series Order Size Flutes mm mm mm Limits 2876 No. M3 X 0.50 3 3.500 2.700 56.000 D2/D3 3.000 M4 X 0.70 3 4.500 3.400 63.000 D3/D4 M5 X 0.80 3 6.000 4.900 70.000 D3/D4 M6 X 1.00 3 6.000 4.900 80.000 D4/D5 ° ° ° ° l l ° M8 X 1.25 3 8.000 6.200 90.000 D4/D5 M10 X 1.50 3 10.000 8.000 100.000 D4/D5 M12 X 1.75 3 12.000 9.000 110.000 D5/D6 Steam Oxide TiN TiCN MolyGlide TiAlN AlCrN 4.000 5.000 6.000 8.000 10.000 12.000 FIREX® 5NIVERSALæ!PPLICATIONSææ!LLOYEDææ5NALLOYEDæ3TEELS NEW! ANSI length - ANSI shank Series 3973 - Cobalt, Metric Fine, spiral point, TiN coated No. Shank dia. Square Size Overall Length Size Flutes inch inch ISO2 (6H) Approx. Series Order inch Limits 3973 No. l l l l l l l l l l l 3 0.318 0.238 2.720 D4/D5 3 0.381 0.286 2.941 D4/D5 M10 X 1.25 3 0.381 0.286 2.941 D4/D5 M12 X 1.00 4 0.367 0.275 3.381 D4/D5 M12 X 1.25 4 0.367 0.275 3.381 D4/D5 M12 X 1.50 4 0.367 0.275 3.381 D5/D6 M14 X 1.25 4 0.429 0.322 3.591 D4/D5 M14 X 1.50 4 0.429 0.322 3.591 D4/D5 M16 X 1.50 4 0.480 0.360 3.811 D4/D5 M18 X 1.50 4 0.542 0.406 4.031 D4/D5 M20 X 1.50 4 0.652 0.489 4.469 D6/D7 8.005 ISO2 (6H) Class of Fit 10.005 10.006 12.005 12.006 12.007 Through Hole 14.006 14.007 16.007 0° Helix 18.007 20.007 Plug Tap Chamfer Lead DIN length - DIN shank Series 2879 - Cobalt, Metric Fine, spiral point, oxide finish, DIN 374 No. Shank dia. Square Size Overall Length ISO2 (6H) B · 3.5 - 5 DIN 374 Approx. Series Order Size Flutes mm mm mm Limits 2879 No. M3 X 0.35 3 2.200 2.200 56.000 D2/D3 M5 X 0.50 3 3.500 2.700 70.000 D3/D4 M6 X 0.75 3 4.500 3.400 80.000 D3/D4 M8 X 0.75 3 6.000 4.900 80.000 D3/D4 M8 X 1.00 3 6.000 4.900 90.000 D4/D5 M10 X 1.00 3 7.000 5.500 90.000 D4/D5 M12 X 1.00 4 9.000 7.000 100.000 D4/D5 M14 X 1.50 4 11.000 9.000 100.000 D4/D5 M16 X 1.50 4 12.000 9.000 100.000 D4/D5 M18 X 1.50 4 14.000 11.000 110.000 D4/D5 M20 X 1.50 4 16.000 12.000 125.000 D6/D7 ° ° ° ° l ° ° ° ° ° ° 3.002 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 5.003 6.004 8.004 8.005 10.005 12.005 14.007 16.007 18.007 20.007 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 41 Cut Taps M8 X 1.00 M10 X 1.00 METRIC FINE 5NIVERSALæ!PPLICATIONSææ!LLOYEDææ5NALLOYEDæ3TEELS ANSI length - ANSI shank UNC 2B Class of Fit Series 3919 - Cobalt, UNC, 40° helix, bright finish Series 3922 - Cobalt, UNC, 40° helix, TiN coated Series 3949 - Cobalt, UNC, 40° helix, TiCN coated No. Cut Taps Blind Hole 40° Helix Semi-bottoming Chamfer Lead C · 2-3 Shank dia. Square Size Overall Length 2B Approx. Series Series Series Order Size Flutes inch inch inch Limits 3919 3922 3949 No. 2-56 3 0.141 0.110 1.751 H2/H3 3-48 3 0.141 0.110 1.811 H2/H3 4-40 3 0.141 0.110 1.882 H2/H3 5-40 3 0.141 0.110 1.941 H2/H3 6-32 3 0.141 0.110 2.000 H3/H4 8-32 3 0.168 0.131 2.130 H3/H4 10-24 3 0.194 0.152 2.382 H3/H4 12-24 3 0.220 0.165 2.382 H3/H4 l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l 2.184 1/4-20 3 0.255 0.191 2.500 H4/H5 5/16-18 3 0.318 0.238 2.720 H4/H5 3/8-16 3 0.381 0.286 2.941 H5/H6 7/16-14 3 0.323 0.242 3.157 H5/H6 1/2-13 3 0.367 0.275 3.381 H5/H6 5/8-11 4 0.480 0.360 3.811 H5/H6 3/4-10 4 0.590 0.442 4.252 H5/H6 7/8-9 4 0.697 0.523 4.689 H6/H7 1-8 4 0.800 0.600 5.130 H6/H7 1 1/4-7 4 1.021 0.766 5.748 H7/H8 1 1/2-6 6 1.233 0.925 6.378 H7/H8 2.515 2.845 3.175 Overall Length 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 15.875 19.050 22.225 25.400 31.750 38.100 DIN length - DIN shank Series 1837 - Cobalt, UNC, 40° helix, TiN coated, DIN 371, C(K) chamfer lead No. Shank dia. Square Size Overall Length 2B DIN 371 Approx. Series Order Size Flutes mm mm mm Limits 1837 No. 10-24 3 6.000 4.900 70.000 H3/H4 ° ° ° l ° 4.826 12-24 3 6.000 4.900 80.000 H3/H4 1/4-20 3 7.000 5.500 80.000 H4/H5 5/16-18 3 8.000 6.200 90.000 H4/H5 3/8-16 3 10.000 8.000 100.000 H5/H6 5.486 6.350 7.938 9.525 TECH TIP: C(K) Chamfer Lead A C/K Chamfer lead is the same length as the C chamfer lead in that it incorporates 2 – 3 threads into the lead length. As an optional standard this chamfer form is found on semi-bottoming taps with a 40 degree R.H. helix. After complete production of the tap (including hard coating) with the C chamfer form – there is an additional flute grind through the cutting chamfer at approximately a 20 degree helix. This chamfer will show its best results when used in moderately tough materials that tend to produce long chips. The “helix correction” helps to cause an immediate irregular chip flow as the chip formation is starting. This irregular chip flow helps to break the chip and allow it to flow more freely up the flute. This geometry is very useful in applications where “birdnesting” is a common problem. 42 Bright Steam Oxide TiN TiCN MolyGlide TiAlN AlCrN FIREX® 5NIVERSALæ!PPLICATIONSææ!LLOYEDææ5NALLOYEDæ3TEELS ANSI length - ANSI shank Series 3920 - Cobalt, UNF, 40° helix, bright finish Series 3923 - Cobalt, UNF, 40° helix, TiN coated Series 3950 - Cobalt, UNF, 40° helix, TiCN coated No. Shank dia. UNF Overall Length Square Size 2B Class of Fit 2B Approx. Series Series Series Order Size Flutes inch inch inch Limits 3920 3923 3950 No. 2-64 3 0.141 0.110 1.751 H2/H3 3-56 3 0.141 0.110 1.811 H2/H3 4-48 3 0.141 0.110 1.882 H2/H3 5-44 3 0.141 0.110 1.941 H2/H3 6-40 3 0.141 0.110 2.000 H2/H3 8-36 3 0.168 0.131 2.130 H2/H3 10-32 3 0.194 0.152 2.382 H3/H4 12-28 3 0.220 0.165 2.382 H3/H4 1/4-28 3 0.255 0.191 2.500 H3/H4 5/16-24 3 0.318 0.238 2.720 H3/H4 l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l 2.184 3 0.381 0.286 2.941 H3/H4 3 0.323 0.242 3.157 H4/H5 1/2-20 3 0.367 0.275 3.381 H4/H5 5/8-18 4 0.480 0.360 3.811 H4/H5 3/4-16 4 0.590 0.442 4.252 H5/H6 7/8-14 4 0.697 0.523 4.689 H6/H7 1-12 4 0.800 0.600 5.130 H6/H7 1 1/4-12 4 1.021 0.766 5.748 H6/H7 1 1/2-12 6 1.233 0.925 6.378 H6/H7 2.845 Blind Hole 3.175 3.505 4.166 Cut Taps 3/8-24 7/16-20 2.515 40° Helix 4.826 5.486 6.350 7.938 Semi-bottoming Chamfer Lead 9.525 11.113 12.700 15.875 C · 2-3 19.050 22.225 25.400 31.750 38.100 DIN length - DIN shank Series 1838 - Cobalt, UNF, 40° helix, TiN coated, DIN 374, C(K) chamfer lead No. Shank dia. Square Size Overall Length 2B DIN 374 Approx. Series Order Size Flutes mm mm mm Limits 1838 No. 10-32 3 3.500 2.700 70.000 H3/H4 ° ° ° l l l ° l ° ° 4.826 12-28 3 4.000 3.000 80.000 H3/H4 1/4-28 3 4.500 3.400 80.000 H3/H4 5/16-24 3 6.000 4.900 90.000 H3/H4 3/8-24 3 7.000 5.500 90.000 H3/H4 7/16-20 3 8.000 6.200 100.000 H4/H5 1/2-20 3 9.000 7.000 100.000 H4/H5 5/8-18 4 12.000 9.000 100.000 H4/H5 7/8-14 4 18.000 14.500 125.000 H6/H7 1-12 4 18.000 14.500 140.000 H6/H7 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 5.486 6.350 7.938 9.525 11.113 12.700 15.875 22.225 25.400 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 43 5NIVERSALæ!PPLICATIONSææ!LLOYEDææ5NALLOYEDæ3TEELS ANSI length - ANSI shank UNC / UNF 2B Class of Fit Cut Taps Blind Hole 40° Helix Full-bottoming Chamfer Lead E · 1.5 - 2 NEW! Series 3977 - Cobalt, UNC, 40° helix, TiN coated, Form E No. Shank dia. Square Size Size Flutes inch inch inch Limits 3977 No. 2-56 3-48 4-40 5-40 6-32 8-32 10-24 12-24 1/4-20 5/16-18 3/8-16 7/16-14 1/2-13 9/16-12 5/8-11 3/4-10 7/8-9 1-8 1 1/4-7 1 1/2-6 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 6 0.141 0.141 0.141 0.141 0.141 0.168 0.194 0.220 0.255 0.318 0.381 0.323 0.367 0.429 0.480 0.590 0.697 0.800 1.021 1.233 0.110 0.110 0.110 0.110 0.110 0.131 0.152 0.165 0.191 0.238 0.286 0.242 0.275 0.322 0.360 0.442 0.523 0.600 0.766 0.925 1.751 1.811 1.882 1.941 2.000 2.130 2.382 2.382 2.500 2.720 2.941 3.157 3.381 3.591 3.811 4.252 4.689 5.130 5.748 6.378 H2/H3 H2/H3 H2/H3 H2/H3 H3/H4 H3/H4 H3/H4 H3/H4 H4/H5 H4/H5 H5/H6 H5/H6 H5/H6 H5/H6 H5/H6 H5/H6 H6/H7 H6/H7 H7/H8 H7/H8 l l l l l l l l l l l l l l l l l l l l 2.184 2.515 2.845 3.175 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 14.288 15.875 19.050 22.225 25.400 31.750 38.100 Approx. Series Order ANSI length - ANSI shank No. 44 Bright Shank dia. Approx. Series Order NEW! Series 3978 - Cobalt, UNF, 40° helix, TiN coated, Form E NEW! ANSI E Form ng” i o ott m “full-b taps style 2B Overall Length Square Size 2B Overall Length Size Flutes inch inch inch Limits 3978 No. 2-64 3-56 4-48 5-44 6-40 8-36 10-32 12-28 1/4-28 5/16-24 3/8-24 7/16-20 1/2-20 9/16-18 5/8-18 3/4-16 7/8-14 1-12 1 1/4-12 1 1/2-12 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 6 0.141 0.141 0.141 0.141 0.141 0.168 0.194 0.220 0.255 0.318 0.381 0.323 0.367 0.429 0.480 0.590 0.697 0.800 1.021 1.233 0.110 0.110 0.110 0.110 0.110 0.131 0.152 0.165 0.191 0.238 0.286 0.242 0.275 0.322 0.360 0.442 0.523 0.600 0.766 0.925 1.751 1.811 1.882 1.941 2.000 2.130 2.382 2.382 2.500 2.720 2.941 3.157 3.381 3.591 3.811 4.252 4.689 5.130 5.748 6.378 H2/H3 H2/H3 H2/H3 H2/H3 H2/H3 H2/H3 H3/H4 H3/H4 H3/H4 H3/H4 H3/H4 H4/H5 H4/H5 H4/H5 H4/H5 H5/H6 H6/H7 H6/H7 H6/H7 H6/H7 l l l l l l l l l l l l l l l l l l l l 2.184 2.515 2.845 3.175 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 14.288 15.875 19.050 22.225 25.400 31.750 38.100 Steam Oxide TiN TiCN MolyGlide TiAlN AlCrN FIREX® 5NIVERSALæ!PPLICATIONSææ!LLOYEDææ5NALLOYEDæ3TEELS NEW! ANSI length - ANSI shank UNC / UNF Series 3954 - Cobalt, UNC, 40° helix, TiN coated, axial coolant through Size 2B No. Shank dia. Square Size Overall Length Flutes inch inch inch Limits 3954 No. l l l l l l l 6.350 Approx. Series Order 3 0.255 0.191 2.500 H4/H5 3 0.318 0.238 2.720 H4/H5 3/8-16 3 0.381 0.286 2.941 H5/H6 7/16-14 3 0.323 0.242 3.157 H5/H6 1/2-13 3 0.367 0.275 3.381 H5/H6 5/8-11 4 0.480 0.360 3.811 H5/H6 3/4-10 4 0.590 0.442 4.252 H5/H6 7.938 9.525 11.113 12.700 15.875 Blind Hole Cut Taps 1/4-20 5/16-18 2B Class of Fit 19.050 40° Helix Semi-bottoming Chamfer Lead NEW! ANSI length - ANSI shank Series 3955 - Cobalt, UNF, 40° helix, TiN coated, axial coolant through No. Shank dia. Square Size Overall Length 2B Approx. Series Order Size Flutes inch inch inch Limits 3955 No. 1/4-28 3 0.255 0.191 2.500 H3/H4 l l l l l l l 6.350 5/16-24 3 0.318 0.238 2.720 H3/H4 3/8-24 3 0.381 0.286 2.941 H3/H4 7/16-20 3 0.323 0.242 3.157 H4/H5 1/2-20 3 0.367 0.275 3.381 H4/H5 5/8-18 4 0.480 0.360 3.811 H4/H5 3/4-16 4 0.590 0.442 4.252 H5/H6 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS C · 2-3 7.938 9.525 11.113 12.700 15.875 19.050 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 45 5NIVERSALæ!PPLICATIONSææ!LLOYEDææ5NALLOYEDæ3TEELS ANSI length - ANSI shank METRIC Series 3918 - Cobalt, Metric, 40° helix, bright finish Series 3921 - Cobalt, Metric, 40° helix, TiN coated Series 3948 - Cobalt, Metric, 40° helix, TiCN coated ISO2 (6H) Class of Fit Cut Taps Blind Hole 40° Helix Semi-bottoming Chamfer Lead Shank dia. Square Size ISO2 (6H) Approx. Series Series Series Order Size Flutes inch inch inch Limits 3918 3921 3948 No. M2 X 0.40 3 0.141 0.110 1.752 D2/D3 3 0.141 0.110 1.941 D2/D3 M4 X 0.70 3 0.168 0.131 2.130 D3/D4 M5 X 0.80 3 0.194 0.152 2.382 D3/D4 M6 X 1.00 3 0.255 0.191 2.500 D4/D5 M8 X 1.25 3 0.318 0.238 2.720 D4/D5 M10 X 1.50 3 0.381 0.286 2.941 D4/D5 M12 X 1.75 3 0.367 0.275 3.381 D5/D6 M14 X 2.00 3 0.429 0.322 3.591 D5/D6 M16 X 2.00 4 0.480 0.360 3.811 D6/D7 M18 X 2.50 4 0.542 0.406 4.031 D6/D7 M20 X 2.50 4 0.652 0.489 4.469 D6/D7 l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l 2.000 M3 X 0.50 3.000 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 18.000 20.000 DIN length - DIN shank C · 2-3 46 No. Overall Length Series 889 - Cobalt, Metric, 40° helix, bright finish, DIN 371 Series 890 - Cobalt, Metric, 40° helix, bright finish, DIN 376 Bright DIN 371 DIN 376 Approx. Series Series Order 890 No. ISO2 (6H) No. Shank dia. Square Size Overall Length Size Flutes mm mm mm Limits 889 ° l ° ° ° ° ° ° ° l l ° M2 X 0.40 3 2.800 2.100 45.000 D2/D3 M2.2 X 0.45 3 2.800 2.100 45.000 D2/D3 M2.5 X 0.45 3 2.800 2.100 50.000 D2/D3 M2.6 X 0.45 3 2.800 2.100 50.000 D2/D3 M3 X 0.50 3 3.500 2.700 56.000 D2/D3 M3.5 X 0.60 3 4.000 3.000 56.000 D3/D4 M4 X 0.70 3 4.500 3.400 63.000 D3/D4 M4 X 0.70 3 4.500 3.400 63.000 D3/D4 M5 X 0.80 3 6.000 4.900 70.000 D4/D5 M6 X 1.00 3 6.000 4.900 80.000 D4/D5 M8 X 1.25 3 8.000 6.200 90.000 D4/D5 M10 X 1.50 3 10.000 8.000 100.000 D4/D5 M3 X 0.50 3 2.200 n.a. 56.000 D2/D3 M4 X 0.70 3 2.800 2.100 63.000 D3/D4 M5 X 0.80 3 3.500 2.700 70.000 D3/D4 M6 X 1.00 3 4.500 3.400 80.000 D4/D5 M8 X 1.25 3 6.000 4.900 90.000 D4/D5 M10 X 1.50 3 7.000 5.500 100.000 D4/D5 M12 X 1.75 3 9.000 7.000 110.000 D5/D6 M14 X 2.00 3 11.000 9.000 110.000 D5/D6 M16 X 2.00 4 12.000 9.000 110.000 D6/D7 M20 X 2.50 4 16.000 12.000 140.000 D6/D7 M24 X 3.00 4 18.000 14.500 160.000 D7/D8 Steam Oxide TiN TiCN MolyGlide TiAlN 2.000 2.200 2.500 2.600 3.000 3.500 4.000 4.000 5.000 6.000 8.000 10.000 ° ° ° ° ° l ° ° l l l AlCrN 3.000 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 20.000 24.000 FIREX® 5NIVERSALæ!PPLICATIONSææ!LLOYEDææ5NALLOYEDæ3TEELS NEW! ANSI length - ANSI shank Series 3974 - Cobalt, Metric Fine, 40° helix, TiN coated No. Shank dia. Square Size Overall Length Size Flutes inch inch ISO2 (6H) Approx. Series Order inch Limits 3974 No. l l l l l l l l l l l 3 0.318 0.238 2.720 D4/D5 3 0.381 0.286 2.941 D4/D5 M10 X 1.25 3 0.381 0.286 2.941 D4/D5 M12 X 1.00 3 0.367 0.275 3.381 D4/D5 M12 X 1.25 3 0.367 0.275 3.381 D4/D5 M12 X 1.50 3 0.367 0.275 3.381 D5/D6 M14 X 1.25 3 0.429 0.322 3.591 D4/D5 M14 X 1.50 3 0.429 0.322 3.591 D4/D5 M16 X 1.50 4 0.480 0.360 3.811 D4/D5 M18 X 1.50 4 0.542 0.406 4.031 D4/D5 M20 X 1.50 4 0.652 0.489 4.469 D6/D7 8.005 ISO2 (6H) Class of Fit 10.005 10.006 12.005 12.006 12.007 Blind Hole Cut Taps M8 X 1.00 M10 X 1.00 METRIC FINE 14.006 14.007 16.007 40° Helix 18.007 20.007 Semi-bottoming Chamfer Lead DIN length - DIN shank C · 2-3 Series 2424 - Cobalt, Metric Fine, 40° helix, bright finish, DIN 374 No. Shank dia. Square Size Overall Length ISO2 (6H) DIN 374 Approx. Series Order Size Flutes mm mm mm Limits 2424 No. M5 X 0.50 3 3.500 2.700 70.000 D3/D4 5.003 M6 X 0.75 3 4.500 3.400 80.000 D3/D4 M8 X 1.00 3 6.000 4.900 90.000 D4/D5 M10 X 1.00 3 7.000 5.500 90.000 D4/D5 M10 X 1.25 3 7.000 5.500 100.000 D4/D5 M12 X 1.00 3 9.000 7.000 100.000 D4/D5 M12 X 1.25 3 9.000 7.000 100.000 D4/D5 M12 X 1.50 3 9.000 7.000 100.000 D5/D6 M14 X 1.00 3 11.000 9.000 100.00 D4/D5 M14 X 1.50 3 11.000 9.000 100.000 D4/D5 M16 X 1.50 4 12.000 9.000 100.000 D4/D5 M18 X 1.50 4 14.000 11.000 110.000 D4/D5 M20 X 1.50 4 16.000 12.000 125.000 D6/D7 M24 X 1.50 4 18.000 14.500 140.000 D6/D7 M24 X 2.00 4 18.000 14.500 140.000 D6/D7 ° ° ° l ° ° ° ° l l l l l ° l ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 6.004 8.005 10.005 10.006 12.005 12.006 12.007 14.005 14.007 16.007 18.007 20.007 24.007 24.008 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 47 5NIVERSALæ!PPLICATIONSææ!LLOYEDææ5NALLOYEDæ3TEELS METRIC Series 3976 - Cobalt, Metric, 40° helix, TiN coated, Form E 6H Class of Fit Blind Hole NEW! ANSI length - ANSI shank 2B No. Shank dia. Square Size Overall Length Size Flutes inch inch inch Limits 3976 No. M2 X 0.40 3 0.141 0.110 1.752 D2/D3 3 0.141 0.110 1.941 D2/D3 M4 X 0.70 3 0.168 0.131 2.130 D3/D4 M5 X 0.80 3 0.194 0.152 2.382 D3/D4 M6 X 1.00 3 0.255 0.191 2.500 D4/D5 l l l l l l l l l l l l 2.000 M3 X 0.50 Approx. Series Order 3 0.318 0.238 2.720 D4/D5 3 0.381 0.286 2.941 D4/D5 M12 X 1.75 3 0.367 0.275 3.381 D5/D6 Full-bottoming M14 X 2.00 3 0.429 0.322 3.591 D5/D6 M16 X 2.00 4 0.480 0.360 3.811 D6/D7 Chamfer Lead M18 X 2.50 4 0.542 0.406 4.031 D6/D7 M20 X 2.50 4 0.652 0.489 4.469 D6/D7 Cut Taps M8 X 1.25 M10 X 1.50 40° Helix 3.000 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 18.000 20.000 E · 1.5 - 2 DIN length - DIN shank Series 2790 - Cobalt, Metric, 40° helix, bright finish, DIN 371, Form E Series 2791 - Cobalt, Metric, 40° helix, bright finish, DIN 376, Form E No. NEW! ANSI E Form ng” i o t t o m “full-b taps style 48 Bright Shank dia. Square Size Overall Length DIN 371 DIN 376 Approx. Series Series 2791 2B Size Flutes mm mm mm Limits 2790 M3 X 0.50 3 3.500 2.700 56.000 D2/D3 M4 X 0.70 3 4.500 3.400 63.000 D3/D4 M5 X 0.80 3 6.000 4.900 70.000 D3/D4 M6 X 1.00 3 6.000 4.900 80.000 D4/D5 M8 X 1.25 3 8.000 6.200 90.000 D4/D5 M10 X 1.50 3 10.000 8.000 100.000 D4/D5 l l l l l l M4 X 0.70 3 2.800 2.100 63.000 D3/D4 M5 X 0.80 3 3.500 2.700 70.000 D3/D4 M6 X 1.00 3 4.500 3.400 80.000 D4/D5 M8 X 1.25 3 6.000 4.900 90.000 D4/D5 M10 X 1.50 3 7.000 5.500 100.000 D4/D5 M12 X 1.75 3 9.000 7.000 110.000 D5/D6 M14 X 2.00 3 11.000 9.000 110.000 D5/D6 M16 X 2.00 4 12.000 9.000 110.000 D6/D7 Steam Oxide TiN TiCN MolyGlide TiAlN Order No. 3.000 4.000 5.000 6.000 8.000 10.000 ° ° ° ° ° l l ° AlCrN 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 FIREX® 5NIVERSALæ!PPLICATIONSææ!LLOYEDææ5NALLOYEDæ3TEELS DIN length - DIN shank METRIC FINE Series 2792 - Cobalt, Metric Fine, 40° helix, bright finish, DIN 374, Form E No. Shank dia. Square Size Overall Length 2B DIN 374 Approx. Series Order Size Flutes mm mm mm Limits 2792 No. M8 X 1.00 3 6.000 4.900 90.000 D4/D5 M10 X 1.00 3 7.000 5.500 90.000 D4/D5 M12 X 1.00 3 9.000 7.000 100.000 D4/D5 M12 X 1.25 3 9.000 7.000 100.000 D4/D5 M12 X 1.50 3 9.000 7.000 100.000 D5/D6 M14 X 1.00 3 11.000 9.000 100.000 D4/D5 M14 X 1.25 3 11.000 9.000 100.000 D4/D5 M14 X 1.50 3 11.000 9.000 100.000 D4/D5 ° l l ° l ° ° ° 8.005 ISO2 (6H) Class of Fit 10.005 12.005 12.006 12.007 Cut Taps Blind Hole 14.005 14.006 14.007 40° Helix Full-bottoming Chamfer Lead E · 1.5 - 2 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 49 5NIVERSALæ!PPLICATIONSææ!LLOYEDææ5NALLOYEDæ3TEELS UNC Series 3982 - Cobalt, UNC, spiral point, TiN coated, H7 class of fit H7 / H11 Tolerance Cut Taps Through Hole 0° Helix Plug Tap Chamfer Lead NEW! ANSI length - ANSI shank No. Shank dia. Square Size Overall Length Actual H7 Series Size Flutes inch inch inch Limits 3982 No. 6-32 3 0.141 0.110 2.000 H7 l l l l l l l l l l 3.505 8-32 3 0.168 0.131 2.130 H7 10-24 3 0.194 0.152 2.382 H7 12-24 3 0.220 0.165 2.382 H7 1/4-20 3 0.255 0.191 2.500 H7 5/16-18 3 0.318 0.238 2.720 H7 3/8-16 3 0.381 0.286 2.941 H7 7/16-14 3 0.323 0.242 3.157 H7 1/2-13 4 0.367 0.275 3.381 H7 5/8-11 4 0.480 0.360 3.811 H7 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 15.875 NEW! ANSI length - ANSI shank B · 3.5 - 5 Order Series 3986 - Cobalt, UNC, spiral point, TiN coated, H11 class of fit No. Shank dia. Square Size Overall Length Actual H11 Series Order Size Flutes inch inch inch Limits 3986 No. 6-32 3 0.141 0.110 2.000 H11 l l l l l l l l l l 3.505 8-32 3 0.168 0.131 2.130 H11 10-24 3 0.194 0.152 2.382 H11 12-24 3 0.220 0.165 2.382 H11 1/4-20 3 0.255 0.191 2.500 H11 5/16-18 3 0.318 0.238 2.720 H11 3/8-16 3 0.381 0.286 2.941 H11 7/16-14 3 0.323 0.242 3.157 H11 1/2-13 4 0.367 0.275 3.381 H11 5/8-11 4 0.480 0.360 3.811 H11 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 15.875 TECH TIP: Oversized taps Oversized Taps are taps that are typically +0.003”/+0.005” larger than standard pitch diameter. An H7 thread limit tap is +0.003” oversize from the basic pitch diameter while an H11 thread limit tap is +0.005” oversize. Typically, oversized taps are used for threading parts that will be subsequently plated or heat treated after tapping. 50 Bright Steam Oxide TiN TiCN MolyGlide TiAlN AlCrN FIREX® 5NIVERSALæ!PPLICATIONSææ!LLOYEDææ5NALLOYEDæ3TEELS NEW! ANSI length - ANSI shank UNF Series 3983 - Cobalt, UNF, spiral point, TiN coated, H7 class of fit No. Shank dia. Square Size Overall Length Actual H7 Series Order Size Flutes inch inch inch Limits 3983 No. 6-40 3 0.141 0.110 2.000 H7 l l l l l l l l l l 3.505 8-36 3 0.168 0.131 2.130 H7 10-32 3 0.194 0.152 2.382 H7 12-28 3 0.220 0.165 2.382 H7 1/4-28 3 0.255 0.191 2.500 H7 3 0.318 0.238 2.720 H7 3/8-24 3 0.381 0.286 2.941 H7 7/16-20 3 0.323 0.242 3.157 H7 1/2-20 4 0.367 0.275 3.381 H7 5/8-18 4 0.480 0.360 3.811 H7 4.166 4.826 5.486 Through Hole 6.350 Cut Taps 5/16-24 H7 / H11 Tolerance 7.938 9.525 0° Helix 11.113 12.700 15.875 Plug Tap Chamfer Lead NEW! ANSI length - ANSI shank Series 3987 - Cobalt, UNF, spiral point, TiN coated, H11 class of fit No. Shank dia. Square Size B · 3.5 - 5 Overall Length Actual H11 Series Order Size Flutes inch inch inch Limits 3987 No. 6-40 3 0.141 0.110 2.000 H11 8-36 3 0.168 0.131 2.130 H11 10-32 3 0.194 0.152 2.382 H11 l l l l l l l l l l 3.505 12-28 3 0.220 0.165 2.382 H11 1/4-28 3 0.255 0.191 2.500 H11 5/16-24 3 0.318 0.238 2.720 H11 3/8-24 3 0.381 0.286 2.941 H11 7/16-20 3 0.323 0.242 3.157 H11 1/2-20 4 0.367 0.275 3.381 H11 5/8-18 4 0.480 0.360 3.811 H11 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 15.875 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 51 5NIVERSALæ!PPLICATIONSææ!LLOYEDææ5NALLOYEDæ3TEELS UNC Series 3980 - Cobalt, UNC, 40° helix, TiN coated, H7 tolerance H7 / H11 Tolerance Cut Taps Blind Hole 40° Helix NEW! ANSI length - ANSI shank No. Shank dia. Square Size Overall Length Actual H7 Series Order Size Flutes inch inch inch Limits 3980 No. 6-32 3 0.141 0.110 2.000 H7 3.505 1/4-20 3 0.255 0.191 2.500 H7 5/16-18 3 0.318 0.238 2.720 H7 3/8-16 3 0.381 0.286 2.941 H7 7/16-14 3 0.323 0.242 3.157 H7 1/2-13 3 0.367 0.275 3.381 H7 5/8-11 4 0.480 0.360 3.811 H7 l l l l l l l l l l Overall Length Actual H11 Series 8-32 3 0.168 0.131 2.130 H7 10-24 3 0.194 0.152 2.382 H7 12-24 3 0.220 0.165 2.382 H7 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 15.875 Chamfer Lead C · 2-3 NEW! ANSI length - ANSI shank Series 3984 - Cobalt, UNC, 40° helix, TiN coated, H11 tolerance No. Shank dia. Square Size Order Size Flutes inch inch inch Limits 3984 No. 6-32 3 0.141 0.110 2.000 H11 8-32 3 0.168 0.131 2.130 H11 10-24 3 0.194 0.152 2.382 H11 l l l l l l l l l l 3.505 12-24 3 0.220 0.165 2.382 H11 1/4-20 3 0.255 0.191 2.500 H11 5/16-18 3 0.318 0.238 2.720 H11 3/8-16 3 0.381 0.286 2.941 H11 7/16-14 3 0.323 0.242 3.157 H11 1/2-13 3 0.367 0.275 3.381 H11 5/8-11 4 0.480 0.360 3.811 H11 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 15.875 TECH TIP: Oversized taps Oversized Taps are taps that are typically +0.003”/+0.005” larger than standard pitch diameter. An H7 thread limit tap is +0.003” oversize from the basic pitch diameter while an H11 thread limit tap is +0.005” oversize. Typically, oversized taps are used for threading parts that will be subsequently plated or heat treated after tapping. 52 Bright Steam Oxide TiN TiCN MolyGlide TiAlN AlCrN FIREX® 5NIVERSALæ!PPLICATIONSææ!LLOYEDææ5NALLOYEDæ3TEELS NEW! ANSI length - ANSI shank UNF Series 3981 - Cobalt, UNF, 40° helix, TiN coated, H7 tolerance No. Shank dia. Square Size Overall Length Actual H7 Series Order Size Flutes inch inch inch Limits 3981 No. 6-40 3 0.141 0.110 2.000 H7 l l l l l l l l l l 3.505 8-36 3 0.168 0.131 2.130 H7 10-32 3 0.194 0.152 2.382 H7 12-28 3 0.220 0.165 2.382 H7 1/4-28 3 0.255 0.191 2.500 H7 3 0.318 0.238 2.720 H7 3/8-24 3 0.381 0.286 2.941 H7 7/16-20 3 0.323 0.242 3.157 H7 1/2-20 3 0.367 0.275 3.381 H7 5/8-18 4 0.480 0.360 3.811 H7 4.166 4.826 5.486 Blind Hole 6.350 7.938 9.525 Cut Taps 5/16-24 H7 / H11 Tolerance 40° Helix 11.113 12.700 15.875 Semi-bottoming Chamfer Lead NEW! ANSI length - ANSI shank C · 2-3 Series 3985 - Cobalt, UNF, 40° helix, TiN coated, H11 tolerance No. Shank dia. Square Size Overall Length Actual H11 Series Order Size Flutes inch inch inch Limits 3985 No. 6-40 3 0.141 0.110 2.000 H11 8-36 3 0.168 0.131 2.130 H11 10-32 3 0.194 0.152 2.382 H11 12-28 3 0.220 0.165 2.382 H11 1/4-28 3 0.255 0.191 2.500 H11 5/16-24 3 0.318 0.238 2.720 H11 3/8-24 3 0.381 0.286 2.941 H11 7/16-20 3 0.323 0.242 3.157 H11 1/2-20 3 0.367 0.275 3.381 H11 5/8-18 4 0.480 0.360 3.811 H11 l l l l l l l l l l 3.505 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 15.875 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 53 5NIVERSALæ!PPLICATIONSææ!LLOYEDææ5NALLOYEDæ3TEELS NEW! ANSI length - ANSI shank UNC / UNF 3B Class of Fit Cut Taps STI Tap Series 3990 - Cobalt, UNC, spiral point, TiN coated, STI style tap No. Shank dia. 3B Overall Length Square Size Approx. Series Size Flutes inch inch inch Limits 3990 No. 4-40 3 0.141 0.110 2.000 H2/H3 6-32 3 0.194 0.152 2.380 H3/H4 8-32 3 0.220 0.165 2.380 H3/H4 1/4-20 3 0.318 0.238 2.720 H4/H5 3/8-16 3 0.367 0.275 3.381 H5/H6 1/2-13 4 0.480 0.360 3.810 H5/H6 l l l l l l 2.845 12.700 Approx. Series Order Through Hole 0° Helix Order 3.505 4.166 6.350 9.525 NEW! ANSI length - ANSI shank Series 3991 - Cobalt, UNF, spiral point, TiN coated, STI style tap Plug Tap Chamfer Lead B · 3.5 - 5 No. Shank dia. Square Size Overall Length Size Flutes inch inch inch Limits 3991 No. 10-32 3 0.255 0.191 2.500 H3/H4 l l l 4.826 1/4-28 3 0.272 0.238 2.720 H3/H4 5/16-24 3 0.381 0.286 2.940 H3/H4 wire thread insert major dia. UNC minor dia. basic thread for thread insert STI TECH TIP: Heli-Coil STI Taps An STI Tap thread tap is designed to create an oversized hole so it can accommodate the required Heli-Coil insert. Screw Thread Inserts are helically formed coils of diamondshaped stainless steel or phosphorous bronze wire that screw into a threaded hole to form a mating internal thread. Screw thread inserts are a convenient way of repairing stripped out threads and are also used to provide stronger threads in soft materials than what can be obtained by directly tapping the base material. Aluminum, zinc die cast, magnesium and even wood are some materials an STI may be used in. 54 Bright 3B Steam Oxide TiN TiCN MolyGlide 7.938 Drill or countersink dia. Tap Size inch 2-56 0.0906 3-48 0.1063 4-40 0.1220 5-40 1.1339 6-32 0.1496 8-32 0.1732 10-24 0.2047 12-24 0.2283 1/4-20 0.2638 5/16-18 0.3307 3/8-16 0.3937 7/16-14 0.4567 1/2-13 0.5236 9/16-12 0.5906 5/8-11 0.6496 3/4-10 0.7776 7/8-9 0.9055 1-8 1.0312 1 1/8-7 1.1614 1 1/4-7 1.2812 1 3/8-6 1.4173 1 1/2-6 1.5469 TiAlN 6.350 AlCrN FIREX® 5NIVERSALæ!PPLICATIONSææ!LLOYEDææ5NALLOYEDæ3TEELS ANSI length - ANSI shank Series 3988 - Cobalt, UNC, 40° helix, TiN coated, STI style tap No. Shank dia. Square Size NEW! 3B Overall Length Approx. Series Order Size Flutes inch inch inch Limits 3988 No. 4-40 3 0.141 0.110 2.000 H2/H3 6-32 3 0.194 0.152 2.380 H3/H4 8-32 3 0.220 0.165 2.380 H3/H4 1/4-20 3 0.318 0.238 2.720 H4/H5 3/8-16 3 0.367 0.275 3.381 H5/H6 1/2-13 4 0.480 0.360 3.810 H5/H6 l l l l l l 2.845 3.505 4.166 6.350 UNC / UNF 3B Class of Fit STI Tap 9.525 12.700 NEW! ANSI length - ANSI shank Cut Taps Blind Hole 40° Helix Series 3989 - Cobalt, UNF, 40° helix, TiN coated, STI style tap No. Shank dia. Square Size Overall Length 3B Approx. Series Order Size Flutes inch inch inch Limits 3989 No. 10-32 3 0.255 0.191 2.500 H3/H4 4.826 1/4-28 3 0.272 0.238 2.720 H3/H4 5/16-24 3 0.381 0.286 2.940 H3/H4 l l l UNF ● 53!æ3TOCK Drill or countersink dia. Tap Size inch 2-64 0.0906 3-56 0.1063 4-48 0.1181 5-44 0.1299 6-40 0.1457 8-36 0.1732 10-32 0.2008 12-28 0.2244 1/4-28 0.2598 5/16-24 0.3230 3/8-24 0.3858 7/16-20 0.4528 1/2-20 0.5156 9/16-18 0.5781 5/8-18 0.6406 3/4-16 0.7677 7/8-14 0.8906 1-12 1.0236 1 1/8-12 1.1481 1 1/4-12 1.2736 1 3/8-12 1.3976 1 1/2-12 1.5236 ❍ )NTERNATIONALæ3TOCKææWKS major dia. 6.350 7.938 Semi-bottoming Chamfer Lead C · 2-3 wire thread insert minor dia. basic thread for thread insert STI 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 55 BLUE RING CUT TAPS sæ4HROUGHæHOLE æææ5.# æææ5.& æææ-ETRICæ æææ-ETRICæFINE 0AGEæ 0AGEæ 0AGEæ 0AGEæ sæ"LINDæHOLE æææ5.# æææ5.& æææ-ETRICæ æææ-ETRICæFINE 0AGEæ 0AGEæ 0AGEæ 0AGEæ Note: Items marked as International Stock may become stocked in USA if sufficient volume is recognized. Recommended Tapping Speeds Material Hardness SFM HRC Brinell Bright finish Hard coated -- < 180 25 - 35 40 - 55 < 23 < 240 20 - 30 35 - 45 < 30 < 280 18 - 25 25 - 40 < 35 Tool Steels < 25 < 320 12 - 15 20 - 30 < 250 5 - 15 10 - 28 Stainless Steel and Aerospace Alloys 3TAINLESSæ3TEELæANDæ!EROSPACEæ!LLOYS ANSI length - ANSI shank UNC 2B Class of Fit Cut Taps Through Hole 0° Helix Plug Tap Chamfer Lead B · 3.5 - 5 Series 3907 - PM cobalt, UNC, spiral point, TiN coated No. Shank dia. 2B Overall Length Square Size Approx. Series Order Size Flutes inch inch inch Limits 3907 No. 4-40 3 0.141 0.110 1.882 H2/H3 2.845 5-40 3 0.141 0.110 1.941 H2/H3 6-32 3 0.141 0.110 2.000 H3/H4 8-32 3 0.168 0.131 2.130 H3/H4 10-24 3 0.194 0.152 2.382 H3/H4 12-24 3 0.220 0.165 2.382 H3/H4 1/4-20 3 0.255 0.191 2.500 H4/H5 5/16-18 3 0.318 0.238 2.720 H4/H5 3/8-16 3 0.381 0.286 2.941 H5/H6 7/16-14 3 0.323 0.242 3.157 H5/H6 1/2-13 4 0.367 0.275 3.381 H5/H6 l l l l l l l l l l l l l l l l 9/16-12 4 0.429 0.322 3.591 H5/H6 5/8-11 4 0.480 0.360 3.811 H5/H6 3/4-10 4 0.590 0.442 4.252 H5/H6 7/8-9 4 0.697 0.523 4.689 H6/H7 1-8 4 0.800 0.600 5.130 H6/H7 3.175 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 14.288 15.875 19.050 22.225 25.400 DIN length - DIN shank Series 1980 - Cobalt, UNC, spiral point, bright finish, DIN 371 Series 1985 - Cobalt, UNC, spiral point, bright finish, DIN 376 58 Bright DIN 371 DIN 376 Approx. Series Series Order 1985 No. 2B No. Shank dia. Square Size Overall Length Size Flutes mm mm mm Limits 1980 4-40 3 3.500 2.700 56.000 H2/H3 6-32 3 4.000 3.000 56.000 H3/H4 8-32 3 4.500 3.400 63.000 H3/H4 10-24 3 6.000 4.900 70.000 H3/H4 12-24 3 6.000 4.900 80.000 H3/H4 l l l ° ° l l l 1/4-20 3 7.000 5.500 80.000 H4/H5 5/16-18 3 8.000 6.200 90.000 H4/H5 3/8-16 3 9.000 7.000 100.000 H5/H6 1/2-13 3 9.000 7.000 110.000 H5/H6 9/16-12 4 11.000 9.000 110.000 H5/H6 5/8-11 4 12.000 9.000 110.000 H5/H6 3/4-10 4 14.000 11.000 125.000 H5/H6 7/8-9 4 18.000 14.500 140.000 H6/H7 1-8 4 18.000 14.500 160.000 H6/H7 Steam Oxide TiN TiCN MolyGlide TiAlN 2.845 3.505 4.166 4.826 5.486 6.350 7.938 9.525 l ° l l l l AlCrN 12.700 14.288 15.875 19.050 22.225 25.400 FIREX® Stainless Steel and Aerospace Alloys 3TAINLESSæ3TEELæANDæ!EROSPACEæ!LLOYS ANSI length - ANSI shank UNF Series 3908 - PM cobalt, UNF, spiral point, TiN coated No. Shank dia. Square Size Overall Length 2B Approx. Series Order Size Flutes inch inch inch Limits 3908 No. 4-48 3 0.141 0.110 1.882 H2/H3 5-44 3 0.141 0.110 1.941 H2/H3 6-40 3 0.141 0.110 2.000 H2/H3 8-36 3 0.168 0.131 2.130 H2/H3 10-32 3 0.194 0.152 2.382 H3/H4 12-28 3 0.220 0.165 2.382 H3/H4 l l l l l l l l l l l l l l l l 2.845 3 0.255 0.191 2.500 H3/H4 3 0.318 0.238 2.720 H3/H4 3/8-24 3 0.381 0.286 2.941 H3/H4 7/16-20 3 0.323 0.242 3.157 H4/H5 1/2-20 4 0.367 0.275 3.381 H4/H5 9/16-18 4 0.429 0.322 3.591 H4/H5 5/8-18 4 0.480 0.360 3.811 H4/H5 3/4-16 4 0.590 0.442 4.252 H5/H6 7/8-14 4 0.697 0.523 4.689 H6/H7 1-12 4 0.800 0.600 5.130 H6/H7 3.175 3.505 4.166 4.826 Through Hole 5.486 Cut Taps 1/4-28 5/16-24 2B Class of Fit 6.350 7.938 0° Helix 9.525 11.113 12.700 14.288 Plug Tap Chamfer Lead 15.875 19.050 22.225 25.400 B · 3.5 - 5 DIN length - DIN shank Series 1990 - Cobalt, UNF, spiral point, bright finish, DIN 374 No. Shank dia. Square Size Overall Length 2B DIN 374 Approx. Series Order Size Flutes mm mm mm Limits 1990 No. 6-40 3 2.500 2.100 56.000 H2/H3 8-36 3 2.800 2.100 63.000 H2/H3 10-32 3 3.500 2.700 70.000 H3/H4 ° ° l ° ° ° 3.505 12-28 3 4.000 3.000 80.000 H3/H4 1/4-28 3 4.500 3.400 80.000 H3/H4 3/8-24 3 7.000 5.500 90.000 H3/H4 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 4.166 4.826 5.486 6.350 9.525 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 59 3TAINLESSæ3TEELæANDæ!EROSPACEæ!LLOYS ANSI length - ANSI shank METRIC ISO2 (6H) Class of Fit Cut Taps Through Hole 0° Helix Plug Tap Chamfer Lead Series 3906 - PM cobalt, Metric, spiral point, TiN coated No. Shank dia. Overall Length Square Size ISO2 (6H) Approx. Series Order Size Flutes inch inch inch Limits 3906 No. M2 X 0.40 3 0.141 0.110 1.752 D2/D3 M3 X 0.50 3 0.141 0.110 1.941 D2/D3 M4 X 0.70 3 0.168 0.131 2.130 D3/D4 M5 X 0.80 3 0.194 0.152 2.382 D3/D4 M6 X 1.00 3 0.255 0.191 2.500 D4/D5 M8 X 1.25 3 0.318 0.238 2.720 D4/D5 M10 X 1.50 3 0.381 0.286 2.941 D4/D5 M12 X 1.75 4 0.367 0.275 3.381 D5/D6 M14 X 2.00 4 0.429 0.322 3.591 D5/D6 M16 X 2.00 4 0.480 0.360 3.811 D6/D7 M18 X 2.50 4 0.542 0.406 4.031 D6/D7 M20 X 2.50 4 0.652 0.489 4.469 D6/D7 l l l l l l l l l l l l 2.000 3.000 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 18.000 20.000 DIN length - DIN shank B · 3.5 - 5 60 Bright Series 879 - PM cobalt, Metric, spiral point, bright finish, DIN 376 Series 1872 - Cobalt, Metric, spiral point, bright finish, DIN 376 DIN 376 DIN 376 Approx. Series Series Order 879 1872 No. l l l l l l l ° l l l ° l l 3.000 ISO2 (6H) No. Shank dia. Square Size Overall Length Size Flutes mm mm mm Limits M3 X 0.50 3 2.200 n.a. 56.000 D2/D3 M4 X 0.70 3 2.800 2.100 63.000 D3/D4 M5 X 0.80 3 3.500 2.700 70.000 D3/D4 M6 X 1.00 3 4.500 3.400 80.000 D4/D5 M8 X 1.25 3 6.000 4.900 90.000 D4/D5 M10 X 1.50 3 7.000 5.500 100.000 D4/D5 M12 X 1.75 3 9.000 7.000 110.000 D5/D6 M14 X 2.00 3 11.000 9.000 110.000 D5/D6 M16 X 2.00 3 12.000 9.000 110.000 D6/D7 M18 X 2.50 4 14.000 11.000 125.000 D6/D7 M20 X 2.50 4 16.000 12.000 140.000 D6/D7 M22 X 2.50 4 18.000 14.500 140.000 D6/D7 M24 X 3.00 4 18.000 14.500 160.000 D7/D8 M30 X 3.50 4 22.000 18.000 180.000 D8/D9 Steam Oxide TiN TiCN MolyGlide® l ° ° l TiAlN AlCrN 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 18.000 20.000 22.000 24.000 30.000 FIREX® 3TAINLESSæ3TEELæANDæ!EROSPACEæ!LLOYS DIN length - DIN shank Series 877 - PM cobalt, Metric, spiral point, bright finish, DIN 371 Series 1870 - Cobalt, Metric, spiral point, bright finish, DIN 371 No. Shank dia. Square Size DIN 371 DIN 371 Approx. Series Series ISO2 (6H) Overall Length Order Size Flutes mm mm mm Limits 877 1870 No. M3 X 0.50 3 3.500 2.700 56.000 D2/D3 M4 X 0.70 3 4.500 3.400 63.000 D3/D4 M5 X 0.80 3 6.000 4.900 70.000 D3/D4 M6 X 1.00 3 6.000 4.900 80.000 D4/D5 M8 X 1.25 3 8.000 6.200 90.000 D4/D5 M10 X 1.50 3 10.000 8.000 100.000 D4/D5 l l l l l l ° ° ° l l l 3.000 4.000 5.000 METRIC / METRIC FINE ISO2 (6H) Class of Fit 6.000 8.000 Through Hole DIN length - DIN shank 0° Helix Series 1873 - Cobalt, Metric Fine, spiral point, bright finish, DIN 374 Size No. Shank dia. Square Size Overall Length Flutes mm mm mm ISO2 (6H) Approx. Series Order Limits 1873 No. ° ° ° ° l l ° l ° ° ° 3.002 M3 X 0.35 3 2.200 n.a. 56.000 D2/D3 M4 X 0.50 3 2.800 2.100 63.000 D3/D4 M5 X 0.50 3 3.500 2.700 70.000 D3/D4 M6 X 0.75 3 4.500 3.400 80.000 D3/D4 M8 X 1.00 3 6.000 4.900 90.000 D4/D5 M10 X 1.00 3 7.000 5.500 90.000 D4/D5 M12 X 1.00 3 9.000 7.000 100.000 D4/D5 M14 X 1.50 3 11.000 9.000 100.000 D4/D5 M16 X 1.50 3 12.000 9.000 100.000 D4/D5 M18 X 1.50 4 14.000 11.000 110.000 D4/D5 M24 X 2.00 4 18.000 14.500 140.000 D6/D7 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS DIN 374 Plug Tap Chamfer Lead 4.003 5.003 6.004 B · 3.5 - 5 8.005 10.005 12.005 14.007 16.007 18.007 24.008 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 61 Cut Taps 10.000 3TAINLESSæ3TEELæANDæ!EROSPACEæ!LLOYS ANSI length - ANSI shank UNC 2B Class of Fit Cut Taps Blind Hole 40° Helix Semi-bottoming Chamfer Lead C · 2-3 Series 3910 - PM cobalt, UNC, 40° helix, TiN coated No. Shank dia. 2B Overall Length Square Size Approx. Series Order Size Flutes inch inch inch Limits 3910 No. 4-40 3 0.141 0.110 1.882 H2/H3 5-40 3 0.141 0.110 1.941 H2/H3 6-32 3 0.141 0.110 2.000 H3/H4 8-32 3 0.168 0.131 2.130 H3/H4 10-24 3 0.194 0.152 2.382 H3/H4 12-24 3 0.220 0.165 2.382 H3/H4 1/4-20 3 0.255 0.191 2.500 H4/H5 5/16-18 3 0.318 0.238 2.720 H4/H5 3/8-16 3 0.381 0.286 2.941 H5/H6 l l l l l l l l l l l l l l l l 2.845 7/16-14 3 0.323 0.242 3.157 H5/H6 1/2-13 3 0.367 0.275 3.381 H5/H6 9/16-12 4 0.429 0.322 3.591 H5/H6 5/8-11 4 0.480 0.360 3.811 H5/H6 3/4-10 4 0.590 0.442 4.252 H5/H6 7/8-9 4 0.697 0.523 4.689 H6/H7 1-8 4 0.800 0.600 5.130 H6/H7 3.175 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 14.288 15.875 19.050 22.225 25.400 DIN length - DIN shank Series 1981 - Cobalt, UNC, 40° helix, bright finish, DIN 371 Series 1986 - Cobalt, UNC, 40° helix, bright finish, DIN 376 No. 62 Bright Shank dia. Square Size Overall Length DIN 371 DIN 376 Approx. Series Series 1986 2B Size Flutes mm mm mm Limits 1981 2-56 3 2.800 2.100 45.000 H2/H3 4-40 3 3.500 2.700 56.000 H2/H3 5-40 3 3.500 2.700 56.000 H2/H3 6-32 3 4.000 3.000 56.000 H3/H4 l l ° l ° ° l l l 8-32 3 4.500 3.400 63.000 H3/H4 10-24 3 6.000 4.900 70.000 H3/H4 1/4-20 3 7.000 5.500 80.000 H4/H5 5/16-18 3 8.000 6.200 90.000 H4/H5 3/8-16 3 9.000 7.000 100.000 H5/H6 7/16-14 3 8.000 6.200 100.000 H5/H6 1/2-13 3 9.000 7.000 110.000 H5/H6 9/16-12 3 11.000 9.000 110.000 H5/H6 5/8-11 4 12.000 9.000 110.000 H5/H6 3/4-10 4 14.000 11.000 125.000 H5/H6 7/8-9 4 18.000 14.500 140.000 H6/H7 Steam Oxide TiN TiCN MolyGlide® TiAlN Order No. 2.184 2.845 3.175 3.505 4.166 4.826 6.350 7.938 9.525 ° l ° l l l AlCrN 11.113 12.700 14.288 15.875 19.050 22.225 FIREX® 3TAINLESSæ3TEELæANDæ!EROSPACEæ!LLOYS ANSI length - ANSI shank Series 3911 - PM cobalt, UNF, 40° helix, TiN coated No. Shank dia. UNF Square Size Overall Length 2B Approx. Series Order Size Flutes inch inch inch Limits 3911 No. 4-48 3 0.141 0.110 1.882 H2/H3 5-44 3 0.141 0.110 1.941 H2/H3 6-40 3 0.141 0.110 2.000 H2/H3 8-36 3 0.168 0.131 2.130 H2/H3 10-32 3 0.194 0.152 2.382 H3/H4 l l l l l l l l l l l l l l l l 2.845 3 0.220 0.165 2.382 H3/H4 3 0.255 0.191 2.500 H3/H4 5/16-24 3 0.318 0.238 2.720 H3/H4 3/8-24 3 0.381 0.286 2.941 H3/H4 7/16-20 3 0.323 0.242 3.157 H4/H5 1/2-20 3 0.367 0.275 3.381 H4/H5 9/16-18 4 0.429 0.322 3.591 H4/H5 5/8-18 4 0.480 0.360 3.811 H4/H5 3/4-16 4 0.590 0.442 4.252 H5/H6 7/8-14 4 0.697 0.523 4.689 H6/H7 1-12 4 0.800 0.600 5.130 H6/H7 3.175 3.505 4.166 4.826 Blind Hole 5.486 6.350 Cut Taps 12-28 1/4-28 2B Class of Fit 40° Helix 7.938 9.525 11.113 12.700 14.288 Semi-bottoming Chamfer Lead 15.875 19.050 22.225 25.400 C · 2-3 DIN length - DIN shank Series 2867 - Cobalt, UNF, 40° helix, bright finish, DIN 374 No. Shank dia. Square Size Overall Length 2B DIN 374 Approx. Series Order Size Flutes mm mm mm Limits 2867 No. 3-56 3 1.800 n.a. 50.000 H2/H3 4-48 3 2.200 n.a. 56.000 H2/H3 5-44 3 2.500 2.100 56.000 H2/H3 6-40 3 2.500 2.100 56.000 H2/H3 8-36 3 2.800 2.100 63.000 H2/H3 10-32 3 3.500 2.700 70.000 H3/H4 12-28 3 4.000 3.000 80.000 H3/H4 1/4-28 3 4.500 3.400 80.000 H3/H4 ° ° ° ° ° ° ° ° ° ° ° ° ° l l 2.515 5/16-24 3 6.000 4.900 90.000 H3/H4 3/8-24 3 7.000 5.500 90.000 H3/H4 7/16-20 3 8.000 6.200 90.000 H4/H5 1/2-20 3 9.000 7.000 100.000 H4/H5 5/8-18 4 12.000 9.000 100.000 H4/H5 7/8-14 4 18.000 14.500 125.000 H6/H7 1-12 4 18.000 14.500 140.000 H6/H7 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 2.845 3.175 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 15.875 22.225 25.400 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 63 3TAINLESSæ3TEELæANDæ!EROSPACEæ!LLOYS ANSI length - ANSI shank METRIC ISO2 (6H) Class of Fit Cut Taps Blind Hole 40° Helix Semi-bottoming Chamfer Lead Series 3909 - PM cobalt, Metric, 40° helix, TiN coated Size No. Shank dia. Square Size Overall Length Flutes inch inch inch ISO2 (6H) Approx. Series Order Limits 3909 No. l l l l l l l l l l l l 2.000 M2 X 0.40 3 0.141 0.110 1.752 D2/D3 M3 X 0.50 3 0.141 0.110 1.941 D2/D3 M4 X 0.70 3 0.168 0.131 2.130 D3/D4 M5 X 0.80 3 0.194 0.152 2.382 D3/D4 M6 X 1.00 3 0.255 0.191 2.500 D4/D5 M8 X 1.25 3 0.318 0.238 2.720 D4/D5 M10 X 1.50 3 0.381 0.286 2.941 D4/D5 M12 X 1.75 3 0.367 0.275 3.381 D5/D6 M14 X 2.00 3 0.429 0.322 3.591 D5/D6 M16 X 2.00 4 0.480 0.360 3.811 D6/D7 M18 X 2.50 4 0.542 0.406 4.031 D6/D7 M20 X 2.50 4 0.652 0.489 4.469 D6/D7 3.000 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 18.000 20.000 DIN length - DIN shank Series 909 - PM cobalt, Metric, 40° helix, bright finish, DIN 371 Series 910 - PM cobalt, Metric, 40° helix, bright finish, DIN 376 C · 2-3 No. Shank dia. Overall Length Square Size DIN 371 DIN 376 Approx. Series Series 910 ISO2 (6H) Size Flutes mm mm mm Limits 909 M3 X 0.50 3 3.500 2.700 56.000 D2/D3 M4 X 0.70 3 4.500 3.400 63.000 D3/D4 M5 X 0.80 3 6.000 4.900 70.000 D3/D4 M6 X 1.00 3 6.000 4.900 80.000 D4/D5 M8 X 1.25 3 8.000 6.200 90.000 D4/D5 M10 X 1.50 3 10.000 8.000 100.000 D4/D5 l ° ° l l l M12 X 1.75 3 9.000 7.000 110.000 D5/D6 M14 X 2.00 3 11.000 9.000 110.000 D5/D6 M16 X 2.00 4 12.000 9.000 110.000 D6/D7 M20 X 2.50 4 16.000 12.000 140.000 D6/D7 M24 X 3.00 4 18.000 14.500 160.000 D7/D8 Order No. 3.000 4.000 5.000 6.000 8.000 10.000 l ° l ° ° 12.000 14.000 16.000 20.000 24.000 DIN length - DIN shank Series 936 - PM cobalt, Metric Fine, 40° helix, bright finish, DIN 374 64 Bright No. Shank dia. Square Size Overall Length Size Flutes mm mm ISO2 (6H) Approx. Series Order mm Limits 936 No. l l ° l l l l ° M8 X 1.00 3 6.000 4.900 90.000 D4/D5 M10 X 1.00 3 7.000 5.500 90.000 D4/D5 M12 X 1.00 3 9.000 7.000 100.000 D4/D5 M12 X 1.50 3 9.000 7.000 100.000 D5/D6 M14 X 1.50 3 11.000 9.000 100.000 D4/D5 M16 X 1.50 4 12.000 9.000 100.000 D4/D5 M18 X 1.50 4 14.000 11.000 110.000 D4/D5 M20 X 1.50 4 16.000 12.000 125.000 D6/D7 Steam Oxide TiN TiCN DIN 374 MolyGlide® TiAlN AlCrN 8.005 10.005 12.005 12.007 14.007 16.007 18.007 20.007 FIREX® 3TAINLESSæ3TEELæANDæ!EROSPACEæ!LLOYS DIN length - DIN shank Series 2895 - Cobalt, Metric, 15° helix, TiN coated, DIN 376 Series 2896 - Cobalt, Metric, 15° helix, TiN coated, DIN 371 No. Shank dia. Overall Length Square Size DIN 376 DIN 371 Approx. Series Series 2895 2896 No. l l l l ° ° 3.000 ISO2 (6H) Flutes mm mm mm Limits 3 3.500 2.700 56.000 D2/D3 M4 X 0.70 3 4.500 3.400 63.000 D3/D4 M5 X 0.80 3 6.000 4.900 70.000 D3/D4 M6 X 1.00 3 6.000 4.900 80.000 D4/D5 M8 X 1.25 3 8.000 6.200 90.000 D4/D5 M10 X 1.50 3 10.000 8.000 100.000 D4/D5 M12 X 1.75 3 9.000 7.000 110.000 D5/D6 M14 X 2.00 3 11.000 9.000 110.000 D5/D6 M16 X 2.00 4 12.000 9.000 110.000 D6/D7 M18 X 2.50 4 14.000 11.000 125.000 D6/D7 M20 X 2.50 4 16.000 12.000 140.000 D6/D7 M22 X 2.50 4 18.000 14.500 140.000 D6/D7 M24 X 3.00 4 18.000 14.500 160.000 D7/D8 ° ° l ° l ° ° 4.000 5.000 6.000 8.000 10.000 12.000 16.000 18.000 15° Helix 20.000 22.000 24.000 Semi-bottoming Chamfer Lead C · 2-3 Series 2897 - Cobalt, Metric Fine, 15° helix, TiN coated, DIN 374 No. Shank dia. Square Size Overall Length Size Flutes mm mm M4 X 0.50 3 2.800 M5 X 0.50 3 3.500 M6 X 0.50 3 M6 X 0.75 ISO2 (6H) DIN 374 Approx. Series Order mm Limits 2897 No. 2.100 63.000 D3/D4 70.000 D3/D4 4.500 3.400 80.000 D3/D4 3 4.500 3.400 80.000 D3/D4 ° ° ° ° l ° ° ° l l ° ° ° ° 4.003 2.700 M8 X 1.00 3 6.000 4.900 90.000 D4/D5 M10 X 1.00 3 7.000 5.500 90.000 D4/D5 M12 X 1.00 3 9.000 7.000 100.000 D4/D5 M12 X 1.50 3 9.000 7.000 100.000 D5/D6 M14 X 1.50 3 11.000 9.000 100.000 D4/D5 M16 X 1.50 4 12.000 9.000 100.000 D4/D5 M18 X 1.50 4 14.000 11.000 110.000 D4/D5 M20 X 1.50 4 16.000 12.000 125.000 D6/D7 M22 X 1.50 4 18.000 14.500 125.000 D6/D7 M24 X 1.50 4 18.000 14.500 140.000 D6/D7 ❍ )NTERNATIONALæ3TOCKææWKS Blind Hole 14.000 DIN length - DIN shank ● 53!æ3TOCK ISO2 (6H) Class of Fit Cut Taps Size M3 X 0.50 Order METRIC / METRIC FINE 5.003 6.003 6.004 8.005 10.005 12.005 12.007 14.007 16.007 18.007 20.007 22.007 24.007 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 65 RED RING CUT TAPS sæ4HROUGHæHOLE æææ5.# æææ5.& æææ-ETRICæ æææ-ETRICæFINE 0AGEæ 0AGEæ 0AGEæ 0AGEæ sæ"LINDæHOLE æææ5.# æææ5.& æææ-ETRICæ æææ-ETRICæFINE 0AGEæ 0AGEæ 0AGEæ 0AGEæ Note: Items marked as International Stock may become stocked in USA if sufficient volume is recognized. Recommended Tapping Speeds Material Hardness SFM HRC Brinell Bright finish Hard coated < 30 < 280 25 - 35 35 - 50 < 35 < 320 18 - 25 28 - 40 < 38 < 350 10 - 20 14 - 35 < 60 Tool Steels < 25 *( Series 2944 only) < 250 8 - 20 4-7 15 - 35 High-Tensile, Heat-Treatable Hardened and Tool Steels DIN length - ANSI shank UNC / UNF 2B Class of Fit Cut Taps Through Hole 0° Helix Plug Tap Chamfer Lead B · 3.5 - 5 Series 3992 - PM cobalt, UNC, spiral point, TiN coated No. Shank dia. Square Size NEW! Overall Length 2B Approx. Series Order Size Flutes inch inch inch Limits 3992 No. 4-40 3 0.141 0.110 2.205 H2/H3 5-40 3 0.141 0.110 2.205 H2/H3 6-32 3 0.141 0.110 2.205 H3/H4 8-32 3 0.168 0.131 2.480 H3/H4 10-24 3 0.194 0.152 2.756 H3/H4 12-24 3 0.220 0.165 3.150 H3/H4 1/4-20 3 0.255 0.191 3.150 H4/H5 5/16-18 3 0.318 0.238 3.543 H4/H5 3/8-16 3 0.381 0.286 3.937 H5/H6 7/16-14 3 0.323 0.242 3.937 H5/H6 1/2-13 4 0.367 0.275 4.331 H5/H6 l l l l l l l l l l l l l l l l l 2.845 5/8-11 4 0.480 0.360 4.331 H5/H6 3/4-10 4 0.590 0.442 4.921 H5/H6 7/8-9 4 0.697 0.523 5.512 H6/H7 1-8 4 0.800 0.600 6.299 H6/H7 1 1/4-7 4 1.021 0.766 7.087 H7/H8 1 1/2-6 5 1.233 0.925 7.874 H7/H8 3.175 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 15.875 19.050 22.225 25.400 31.750 38.100 NEW! DIN length - ANSI shank Series 3994 - PM cobalt, UNF, spiral point, TiN coated NEW! ngth DIN le nk ha ANSI s p a t s 68 Bright 2B No. Shank dia. Square Size Overall Length Size Flutes inch inch inch Limits 3994 No. 4-48 3 0.141 0.110 2.205 H2/H3 3 0.141 0.110 2.205 H2/H3 6-40 3 0.141 0.110 2.205 H2/H3 8-36 3 0.168 0.131 2.480 H2/H3 10-32 3 0.194 0.152 2.756 H3/H4 12-28 3 0.220 0.165 3.150 H3/H4 l l l l l l l l l l l l l l l l l 2.845 5-44 Approx. Series Order 1/4-28 3 0.255 0.191 3.150 H3/H4 5/16-24 3 0.318 0.238 3.543 H3/H4 3/8-24 3 0.381 0.286 3.543 H3/H4 7/16-20 3 0.323 0.242 3.937 H4/H5 1/2-20 4 0.367 0.275 3.937 H4/H5 5/8-18 4 0.480 0.360 3.937 H4/H5 3/4-16 4 0.590 0.442 4.331 H5/H6 7/8-14 4 0.697 0.523 4.921 H6/H7 1-12 4 0.800 0.600 5.512 H6/H7 1 1/4-12 4 1.021 0.766 5.901 H6/H7 1 1/2-12 5 1.233 0.925 6.699 H6/H7 Steam Oxide TiN TiCN MolyGlide® TiAlN AlCrN 3.175 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 15.875 19.050 22.225 25.400 31.750 38.100 FIREX® High-Tensile, Heat-Treatable Hardened and Tool Steels DIN length - DIN shank Series 804 - Cobalt, Metric, spiral point, bright finish, DIN 371 Series 1914 - Cobalt, Metric, spiral point, TiCN coated, DIN 371 METRIC DIN 371 DIN 371 Approx. Series Series Order ISO2 (6H) No. Shank dia. Square Size Overall Length Size Flutes mm mm mm Limits 804 1914 No. l ° l ° ° l ° ° 2.000 M2 x 0.40 3 2.800 2.100 45.000 D2/D3 M2.2 x 0.45 3 2.800 2.100 45.000 D2/D3 M2.3 X 0.40 3 2.800 2.100 45.000 D2/D3 M2.5 x 0.45 3 2.800 2.100 50.000 D2/D3 M2.6 x 0.45 3 2.800 2.100 50.000 D2/D3 3 3.500 2.700 56.000 D2/D3 3 4.000 3.000 56.000 D3/D4 M4 x 0.70 3 4.500 3.400 63.000 D3/D4 M5 x 0.80 3 6.000 4.900 70.000 D3/D4 M6 x 1.00 3 6.000 4.900 80.000 D4/D5 M8 x 1.25 3 8.000 6.200 90.000 D4/D5 M10 x 1.50 3 10.000 8.000 100.000 D4/D5 2.200 2.300 2.500 3.000 3.500 ° ° l ° l 5.000 6.000 8.000 Plug Tap Chamfer Lead 10.000 B · 3.5 - 5 Series 816 - Cobalt, Metric, spiral point, bright finish, DIN 376 Series 1915 - Cobalt, Metric, spiral point, TiCN coated, DIN 376 DIN 376 DIN 376 Approx. Series Series Order ISO2 (6H) No. Shank dia. Square Size Overall Length Size Flutes mm mm mm Limits 816 1915 No. M3 x 0.50 3 2.200 n.a. 56.000 D2/D3 3 2.800 2.100 63.000 D3/D4 M5 x 0.80 3 3.500 2.700 70.000 D3/D4 M6 x 1.00 3 4.500 3.400 80.000 D4/D5 M8 x 1.25 3 6.000 4.900 90.000 D4/D5 M10 x 1.50 3 7.000 5.500 100.000 D4/D5 M12 x 1.75 3 9.000 7.000 110.000 D5/D6 M14 x 2.00 3 11.000 9.000 110.000 D5/D6 M16 x 2.00 3 12.000 9.000 110.000 D6/D7 M18 x 2.50 4 14.000 11.000 125.000 D6/D7 M20 x 2.50 4 16.000 12.000 140.000 D6/D7 M24 x 3.00 4 18.000 14.500 160.000 D7/D8 ° ° ° ° ° l ° l l ° ° l ° ° ° ° ° ° ° ° ° ° l ° 3.000 M4 x 0.70 ❍ )NTERNATIONALæ3TOCKææWKS 0° Helix 4.000 DIN length - DIN shank ● 53!æ3TOCK Through Hole 2.600 Cut Taps M3 x 0.50 M3.5 x 0.60 ° ° ° l ° l l l l ISO2 (6H) Class of Fit 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 18.000 20.000 24.000 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 69 High-Tensile, Heat-Treatable Hardened and Tool Steels DIN length - DIN shank METRIC FINE Cut Taps ISO2 (6H) Class of Fit Through Hole 0° Helix Plug Tap Chamfer Lead Series 828 - Cobalt, Metric Fine, spiral point, bright finish, DIN 374 No. Shank dia. Square Size Overall Length ISO2 (6H) DIN 374 Approx. Series Order Size Flutes mm mm mm Limits 828 No. M3 x 0.35 3 2.200 n.a. 56.000 D2/D3 3.002 M4 x 0.50 3 2.800 2.100 63.000 D3/D4 M5 x 0.50 3 3.500 2.700 70.000 D3/D4 M6 x 0.75 3 4.500 3.400 80.000 D3/D4 M8 x 0.75 3 6.000 4.900 80.000 D3/D4 M8 x 1.00 3 6.000 4.900 90.000 D4/D5 M10 x 1.00 3 7.000 5.500 90.000 D4/D5 M12 x 1.50 3 9.000 7.000 100.000 D5/D6 M14 x 1.50 3 11.000 9.000 100.000 D4/D5 M16 x 1.50 3 12.000 9.000 100.000 D4/D5 M18 x 1.50 4 14.000 11.000 110.000 D4/D5 M20 x 1.50 4 16.000 12.000 125.000 D6/D7 M22 x 1.50 4 18.000 14.500 125.000 D6/D7 ° ° ° l ° ° ° l l ° ° l ° 4.003 5.003 6.004 8.004 8.005 10.005 12.007 14.007 16.007 18.007 20.007 22.007 B · 3.5 - 5 70 Bright Steam Oxide TiN TiCN MolyGlide® TiAlN AlCrN FIREX® High-Tensile, Heat-Treatable Hardened and Tool Steels and Tool Steels High-Tensile, Heat-Treatable Hardened DIN length - ANSI shank NEW! Series 3993 - PM cobalt, UNC, 40° helix, TiN coated 2B No. Shank dia. Square Size Overall Length Size Flutes inch inch inch Limits 3993 No. 4-40 3 0.141 0.110 2.205 H2/H3 3 0.141 0.110 2.205 H2/H3 6-32 3 0.141 0.110 2.205 H3/H4 8-32 3 0.168 0.131 2.480 H3/H4 10-24 3 0.194 0.152 2.756 H3/H4 12-24 3 0.220 0.165 3.150 H3/H4 1/4-20 3 0.255 0.191 3.150 H4/H5 l l l l l l l l l l l l l l l l l 2.845 5-40 Approx. Series Order 3 0.318 0.238 3.543 H4/H5 3/8-16 3 0.381 0.286 3.937 H5/H6 7/16-14 3 0.323 0.242 3.937 H5/H6 1/2-13 3 0.367 0.275 4.331 H5/H6 5/8-11 4 0.480 0.360 4.331 H5/H6 3/4-10 4 0.590 0.442 4.921 H5/H6 7/8-9 5 0.697 0.523 5.512 H6/H7 1-8 5 0.800 0.600 6.299 H6/H7 1 1/4-7 5 1.021 0.766 7.087 H7/H8 1 1/2-6 6 1.233 0.925 7.874 H7/H8 2B Class of Fit 3.175 3.505 4.166 4.826 5.486 Blind Hole Cut Taps 5/16-18 UNC / UNF 6.350 7.938 9.525 40° Helix 11.113 12.700 15.875 19.050 Semi-bottoming Chamfer Lead 22.225 25.400 31.750 38.100 C · 2-3 NEW! DIN length - ANSI shank Series 3995 - PM cobalt, UNF, 40° helix, TiN coated 2B No. Shank dia. Square Size Overall Length Size Flutes inch inch inch Limits 3995 No. 4-48 3 0.141 0.110 2.205 H2/H3 3 0.141 0.110 2.205 H2/H3 6-40 3 0.141 0.110 2.205 H2/H3 8-36 3 0.168 0.131 2.480 H2/H3 10-32 3 0.194 0.152 2.756 H3/H4 12-28 3 0.220 0.165 3.150 H3/H4 1/4-28 3 0.255 0.191 3.150 H3/H4 l l l l l l l l l l l l l l l l l 2.845 5-44 Approx. Series Order 5/16-24 3 0.318 0.238 3.543 H3/H4 3/8-24 3 0.381 0.286 3.543 H3/H4 7/16-20 3 0.323 0.242 3.937 H4/H5 1/2-20 3 0.367 0.275 3.937 H4/H5 5/8-18 4 0.480 0.360 3.937 H4/H5 3/4-16 4 0.590 0.442 4.331 H5/H6 7/8-14 5 0.697 0.523 4.921 H6/H7 1-12 5 0.800 0.600 5.512 H6/H7 1 1/4-12 5 1.021 0.766 5.901 H6/H7 1 1/2-12 6 1.233 0.925 6.699 H6/H7 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 3.175 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 15.875 NEW DIN l ! e ANSI ngth shan taps k 19.050 22.225 25.400 31.750 38.100 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 71 High-Tensile, Heat-Treatable Hardened and Tool Steels DIN length - DIN shank METRIC Series 811 - Cobalt, Metric, 40° helix, bright finish, DIN 371 Series 1916 - Cobalt, Metric, 40° helix, TiCN coated, DIN 371 ISO2 (6H) Class of Fit Cut Taps Blind Hole 40° Helix Semi-bottoming Chamfer Lead No. Shank dia. Square Size Overall Length DIN 371 DIN 371 Approx. Series Series ISO2 (6H) Order Size Flutes mm mm mm Limits 811 1916 No. M2 X 0.40 3 2.800 2.100 45.000 D2/D3 l M2.5 X 0.45 3 2.800 2.100 50.000 D2/D3 M2.6 X 0.45 3 2.800 2.100 50.000 D2/D3 M3 X 0.50 3 3.500 2.700 56.000 D2/D3 M3.5 X 0.60 3 4.000 3.000 56.000 D3/D4 M4 X 0.70 3 4.500 3.400 63.000 D3/D4 M5 X 0.80 3 6.000 4.900 70.000 D3/D4 M6 X 1.00 3 6.000 4.900 80.000 D4/D5 M7 X 1.00 3 7.000 5.500 80.000 D4/D5 M8 X 1.25 3 8.000 6.200 90.000 D4/D5 M10 X 1.50 3 10.000 8.000 100.000 D4/D5 l l ° ° ° l l l ° l l 2.000 ° ° ° ° l ° ° ° DIN 371 DIN 376 Approx. Series Series 1901 2.500 2.600 3.000 3.500 4.000 5.000 6.000 7.000 8.000 10.000 C · 2-3 DIN length - DIN shank Series 1894 - Cobalt, Metric, 40° helix, bright finish, DIN 371, axial coolant through Series 1901 - Cobalt, Metric, 40° helix, bright finish, DIN 376, axial coolant through No. 72 Bright Shank dia. Square Size Overall Length ISO2 (6H) Size Flutes mm mm mm Limits 1894 M5 X 0.80 3 6.000 4.900 70.000 D3/D4 M6 X 1.00 3 6.000 4.900 80.000 D4/D5 M8 X 1.25 3 8.000 6.200 90.000 D4/D5 M10 X 1.50 3 10.000 8.000 100.000 D4/D5 ° ° l ° M12 X 1.75 3 9.000 7.000 110.000 D5/D6 M14 x 2.00 3 11.000 9.000 110.000 D5/D6 M16 X 2.00 4 12.000 9.000 110.000 D6/D7 M18 x 2.50 4 16.000 12.000 140.000 D6/D7 M20 x 2.50 4 18.000 14.500 160.000 D6/D7 Steam Oxide TiN TiCN MolyGlide® TiAlN Order No. 5.000 6.000 8.000 10.000 ° ° l ° l AlCrN 12.000 14.000 16.000 18.000 20.000 FIREX® High-Tensile, Heat-Treatable Hardened and Tool Steels DIN length - DIN shank Series 823 - Cobalt, Metric, 40° helix, bright finish, DIN 376, chamfer type C Series 1917 - Cobalt, Metric, 40° helix, TiCN coated, DIN 376, chamfer type C No. Shank dia. Square Size Overall Length METRIC DIN 376 DIN 376 Approx. Series Series ISO2 (6H) Order Size Flutes mm mm mm Limits 823 1917 No. M3 X 0.50 3 2.200 n.a. 56.000 D2/D3 M4 X 0.70 3 2.800 2.100 63.000 D3/D4 M5 X 0.80 3 3.500 2.700 70.000 D3/D4 M6 X 1.00 3 4.500 3.400 80.000 D4/D5 l l l l l l l l l ° ° ° l ° ° ° l ° ° ° l ° ° ° l ° ° ° 3.000 3 6.000 4.900 90.000 D4/D5 3 7.000 5.500 100.000 D4/D5 M12 X 1.75 3 9.000 7.000 110.000 D5/D6 M14 X 2.00 3 11.000 9.000 110.000 D5/D6 M16 X 2.00 4 12.000 9.000 110.000 D6/D7 M18 X 2.50 4 14.000 11.000 125.000 D6/D7 M20 X 2.50 4 16.000 12.000 140.000 D6/D7 M22 X 2.50 5 18.000 14.500 140.000 D6/D7 M24 X 3.00 5 18.000 14.500 160.000 D7/D8 M30 X 3.50 5 22.000 18.000 180.000 D7/D8 4.000 5.000 6.000 Blind Hole 8.000 10.000 12.000 Cut Taps M8 X 1.25 M10 X 1.50 ISO2 (6H) Class of Fit 40° Helix 14.000 16.000 18.000 20.000 Semi-bottoming Chamfer Lead 22.000 24.000 30.000 C · 2-3 DIN length - DIN shank Series 2944 - carbide, Metric, TiCN coated, straight flute, chamfer type D D · 3.5-5 No. Shank dia. Square Size Overall Length Size Flutes mm mm M3 X 0.50 3 3.500 M4 X 0.70 4 4.500 M5 X 0.80 4 M6 X 1.00 ISO2 (6H) Approx. Series Order mm Limits 2944 No. 2.700 56.000 D2/D3 63.000 D3/D4 6.000 4.900 70.000 D3/D4 4 6.000 4.900 80.000 D4/D5 M8 X 1.25 5 8.000 6.200 90.000 D4/D5 M10 X 1.50 5 10.000 8.000 100.000 D4/D5 M12 X 1.75 5 12.000 9.000 110.000 D5/D6 l l l l l l l 3.000 3.400 4.000 5.000 6.000 8.000 10.000 12.000 TECH TIP: Type D Form A type D chamfer form has a 3.5 - 5 thread chamfer lead. This chamfer can be used in both through holes and in blind holes when the tap drill depth permits this chamfer length. This is especially useful when tapping harder materials due to the extended chamfer length which distributes the thread cutting process over more cutting edges. The D chamfer form is usually found on rigid, straight fluted tap designs. ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 73 High-Tensile, Heat-Treatable Hardened and Tool Steels DIN length - DIN shank METRIC / METRIC FINE Cut Taps 6HX Class of Fit Blind Hole Series 1188 - PM Cobalt, Metric, 15° helix, TiCN coated, DIN 371, axial coolant Series 1194 - PM Cobalt, Metric, 15° helix, TiCN coated, DIN 376, axial coolant No. Shank dia. Square Size DIN 371 DIN 376 Approx. Series Series 1194 6HX Overall Length Size Flutes mm mm mm Limits 1188 M6 X 1.00 3 6.000 4.900 80.000 D4/D5 M8 X 1.25 3 8.000 6.200 90.000 D4/D5 ° ° ° M10 X 1.50 3 10.000 8.000 100.000 D4/D5 M12 X 1.75 4 9.000 7.000 110.000 D5/D6 M14 X 2.00 4 11.000 9.000 110.000 D5/D6 M16 X 2.00 4 12.000 9.000 110.000 D6/D7 M20 X 2.50 5 16.000 12.000 140.000 D6/D7 M24 X 3.00 5 18.000 14.500 160.000 D7/D8 Order No. 6.000 8.000 10.000 ° ° ° ° ° 12.000 14.000 16.000 20.000 24.000 15° Helix Semi-bottoming Chamfer Lead C · 2-3 DIN length - DIN shank Series 935 - PM cobalt, Metric, 15° helix, bright finish, DIN 376 No. Shank dia. Square Size Overall Length Size Flutes mm mm M12 X 1.75 3 9.000 M16 X 2.00 4 12.000 M20 X 2.50 4 16.000 ISO2 (6H) DIN 376 Approx. Series Order mm Limits 935 No. 7.000 110.000 D5/D6 110.000 D6/D7 12.000 140.000 D6/D7 l ° l 12.000 9.000 16.000 20.000 DIN length - DIN shank Series 1200 - PM Cobalt, Metric Fine, 15° helix, TiCN coated, DIN 376, axial coolant Size 74 Bright 6HX No. Shank dia. Square Size Flutes mm mm mm Limits 1200 ° ° ° ° ° ° ° ° ° ° Approx. Series Order No. M9 X 1 4 7.000 5.500 90.000 D4/D5 M10 X 1 4 7.000 5.500 90.000 D4/D5 M12 X 1 4 9.000 7.000 100.000 D4/D5 M12 X 1.25 4 9.000 7.000 100.000 D4/D5 M12 X 1.50 4 9.000 7.000 100.000 D5/D6 M14 X 1.50 4 11.000 9.000 100.000 D4/D5 M16 X 1.50 5 12.000 9.000 100.000 D4/D5 M18 X 1.50 5 14.000 11.000 110.000 D4/D5 M20 X 1.50 6 16.000 12.000 125.000 D6/D7 M24 X 1.50 6 18.000 14.500 140.000 D6/D7 Steam Oxide DIN 374 Overall Length TiN TiCN MolyGlide® TiAlN AlCrN 9.005 10.005 12.005 12.006 12.007 14.007 16.007 18.007 20.007 24.007 FIREX® High-Tensile, Heat-Treatable Hardened and Tool Steels DIN length - DIN shank Series 835 - Cobalt, Metric Fine, 40° helix, bright finish, DIN 374 Size No. Shank dia. Square Size Overall Length Flutes mm mm mm ISO2 (6H) DIN 374 Approx. Series Order Limits 835 No. ° ° l l ° l ° ° l ° ° l 6.004 3 4.500 3.400 80.000 D3/D4 3 6.000 4.900 80.000 D3/D4 M8 X 1.00 3 6.000 4.900 90.000 D4/D5 M10 X 1.00 3 7.000 5.500 90.000 D4/D5 M12 X 1.00 3 9.000 7.000 100.000 D4/D5 M12 X 1.50 3 9.000 7.000 100.000 D5/D6 M14 X 1.50 3 11.000 9.000 100.000 D4/D5 M16 X 1.50 4 12.000 9.000 100.000 D4/D5 M18 X 1.50 4 14.000 11.000 110.000 D4/D5 M20 X 1.50 4 16.000 12.000 125.000 D6/D7 M22 X 1.50 5 18.000 14.500 125.000 D6/D7 M24 X 1.50 5 18.000 14.500 140.000 D6/D7 ISO2 (6H) Class of Fit 8.004 8.005 10.005 12.005 12.007 Blind Hole Cut Taps M6 X 0.75 M8 X 0.75 METRIC FINE 14.007 16.007 18.007 40° Helix 20.007 22.007 24.007 Semi-bottoming Chamfer Lead C · 2-3 DIN length - DIN shank Series 1907 - Cobalt, Metric Fine, 40° helix, bright finish, DIN 374, axial coolant No. Shank dia. Square Size Overall Length Size Flutes mm mm M6 X 0.75 3 4.500 M8 X 0.75 3 6.000 M8 X 1.00 3 M10 X 1.00 ISO2 (6H) DIN 374 Approx. Series Order mm Limits 1907 No. 3.400 80.000 D3/D4 80.000 D3/D4 6.000 4.900 90.000 D4/D5 3 7.000 5.500 90.000 D4/D5 M12 X 1.00 3 9.000 7.000 100.000 D4/D5 M12 X 1.50 3 9.000 7.000 100.000 D5/D6 M14 X 1.50 3 11.000 9.000 100.000 D4/D5 M16 X 1.50 4 12.000 9.000 100.000 D4/D5 M18 X 1.50 4 14.000 11.000 110.000 D4/D5 M20 X 1.50 4 16.000 12.000 125.000 D6/D7 ° ° ° ° ° ° ° ° ° ° 6.004 4.900 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 8.004 8.005 10.005 12.005 12.007 14.007 16.007 18.007 20.007 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 75 WHITE RING CUT TAPS sæ4HROUGHæHOLE æææ5.# æææ5.& æææ-ETRICæ æææ-ETRICæFINE 0AGEæ 0AGEæ 0AGEæ 0AGEæ sæ"LINDæHOLE æææ-ETRICæ æææ-ETRICæFINE 0AGEæ 0AGEæ Note: Items marked as International Stock may become stocked in USA if sufficient volume is recognized. Recommended Tapping Speeds Material Hardness SFM HRC Brinell Bright finish Hard coated -- < 180 50 - 70 70 - 100 < 25 < 250 25 - 50 40 - 85 < 35 < 320 16 - 22 25 - 35 #ASTæ)RONæANDæ!BRASIVEæ-ATERIALS ANSI length - ANSI shank UNC 2B Class of Fit Cut Taps Through or Blind Hole 0° Helix Series 3937 - Cobalt, UNC, straight flute, FIREX® coated No. Shank dia. 2B Overall Length Square Size Approx. Series Order Size Flutes inch inch inch Limits 3937 No. 6-32 3 0.141 0.110 2.000 H3/H4 l l l l l l l l l l 3.505 8-32 3 0.168 0.131 2.130 H3/H4 10-24 4 0.194 0.152 2.382 H3/H4 12-24 4 0.220 0.165 2.382 H3/H4 1/4-20 4 0.255 0.191 2.500 H4/H5 5/16-18 4 0.318 0.238 2.720 H4/H5 3/8-16 4 0.381 0.286 2.941 H5/H6 7/16-14 4 0.323 0.242 3.157 H5/H6 1/2-13 4 0.367 0.275 3.381 H5/H6 5/8-11 4 0.480 0.360 3.811 H5/H6 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 15.875 Straight Flute Chamfer Lead DIN length - DIN shank C·2-3 78 Bright Series 1979 - Cobalt, UNC, straight flute, oxide finish, DIN 371 Series 1984 - Cobalt, UNC, straight flute, oxide finish, DIN 376 2B DIN 371 DIN 376 No. Shank dia. Square Size Overall Length Approx. Series Series Order Size Flutes mm dec. mm Limits 1979 1984 No. 2-56 3 2.800 2.100 45.000 H2/H3 3-48 3 2.800 2.100 50.000 H2/H3 4-40 3 3.500 2.700 56.000 H2/H3 5-40 3 3.500 2.700 56.000 H2/H3 6-32 3 4.000 3.000 56.000 H3/H4 8-32 3 4.500 3.400 63.000 H3/H4 10-24 4 6.000 4.900 70.000 H3/H4 ° ° ° ° ° ° ° ° ° ° ° 12-24 4 6.000 4.900 80.000 H3/H4 1/4-20 4 7.000 5.500 80.000 H4/H5 5/16-18 4 8.000 6.200 90.000 H4/H5 3/8-16 4 9.000 7.000 100.000 H5/H6 7/16-14 4 8.000 6.200 100.000 H5/H6 1/2-13 4 9.000 7.000 110.000 H5/H6 9/16-12 4 11.000 9.000 110.000 H5/H6 5/8-11 4 12.000 9.000 110.000 H5/H6 3/4-10 5 14.000 11.000 125.000 H5/H6 7/8-9 5 18.000 14.500 140.000 H6/H7 1-8 5 18.000 14.500 160.000 H6/H7 Steam Oxide TiN TiCN MolyGlide® TiAlN 2.184 2.515 2.845 3.175 3.505 4.166 4.826 5.486 6.350 7.938 9.525 ° l ° ° l ° l AlCrN 11.113 12.700 14.288 15.875 19.050 22.225 25.400 FIREX® #ASTæ)RONæANDæ!BRASIVEæ-ATERIALS ANSI length - ANSI shank Series 3938 - Cobalt, UNF, straight flute, FIREX® coated No. Shank dia. UNF Overall Length Square Size 2B Approx. Series Order Size Flutes inch inch inch Limits 3938 No. 6-40 3 0.141 0.110 2.000 H2/H3 8-36 3 0.168 0.131 2.130 H2/H3 10-32 4 0.194 0.152 2.382 H3/H4 l l l l l l l l l l 3.505 12-28 4 0.220 0.165 2.382 H3/H4 1/4-28 4 0.255 0.191 2.500 H3/H4 5/16-24 4 0.318 0.238 2.720 H3/H4 4 0.381 0.286 2.941 H3/H4 4 0.323 0.242 3.157 H4/H5 1/2-20 4 0.367 0.275 3.381 H4/H5 5/8-18 4 0.480 0.360 3.811 H4/H5 4.166 4.826 5.486 6.350 7.938 Through or Blind Hole Cut Taps 3/8-24 7/16-20 2B Class of Fit 9.525 11.113 12.700 0° Helix 15.875 Straight Flute Chamfer Lead DIN length - DIN shank C·2-3 Series 1989 - Cobalt, UNF, straight flute, oxide finish, DIN 374 2B DIN 374 No. Shank dia. Square Size Overall Length Approx. Series Order Size Flutes mm dec. mm Limits 1989 No. 3-56 3 1.800 na 50.000 H2/H3 3 2.200 na 56.000 H2/H3 6-40 3 2.500 2.100 56.000 H2/H3 8-36 3 2.800 2.100 63.000 H2/H3 10-32 4 3.500 2.700 70.000 H3/H4 12-28 4 4.000 3.000 80.000 H3/H4 1/4-28 4 4.500 3.400 80.000 H3/H4 ° ° ° ° ° ° ° l l ° ° l ° l ° 2.515 4-48 5/16-24 4 6.000 4.900 90.000 H3/H4 3/8-24 4 7.000 5.500 90.000 H3/H4 7/16-20 4 8.000 6.200 90.000 H4/H5 1/2-20 4 9.000 7.000 100.000 H4/H5 9/16-18 4 11.000 9.000 100.000 H4/H5 3/4-16 5 14.000 11.000 110.000 H5/H6 7/8-14 5 18.000 14.500 125.000 H6/H7 1-12 5 18.000 14.500 140.000 H6/H7 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 2.845 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 14.288 19.050 22.225 25.400 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 79 #ASTæ)RONæANDæ!BRASIVEæ-ATERIALS ANSI length - ANSI shank METRIC Series 3936 - Cobalt, Metric, straight flute, FIREX® coated ISO2 (6H) Class of Fit Cut Taps Through or Blind Hole 0° Helix No. Shank dia. 6HX Overall Length Square Size Approx. Series Order Size Flutes inch inch inch Limits 3936 No. M3 X 0.50 3 0.141 0.110 1.941 D2/D3 M4 X 0.70 3 0.168 0.131 2.130 D3/D4 M5 X 0.80 4 0.194 0.152 2.382 D3/D4 M6 X 1.00 4 0.255 0.191 2.500 D4/D5 M8 X 1.25 4 0.318 0.238 2.720 D4/D5 M10 X 1.50 4 0.381 0.286 2.941 D4/D5 M12 X 1.75 4 0.367 0.275 3.381 D5/D6 M14 X 2.00 4 0.429 0.322 3.591 D5/D6 M16 X 2.00 4 0.480 0.360 3.811 D6/D7 l l l l l l l l l 3.000 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 Straight Flute Chamfer Lead DIN length - DIN shank Series 1858 - Carbide, Metric, straight flute, bright finish, DIN 371, radial coolant through Series 1859 - Carbide, Metric, straight flute, bright finish, DIN 376, radial coolant through C·2-3 80 Bright DIN 371 DIN 376 Approx. Series Series Order 1859 No. ISO2 (6HX) No. Shank dia. Square Size Overall Length Size Flutes mm dec. mm Limits 1858 M5 X 0.80 4 6.000 4.900 70.000 D3/D4 M6 X 1.00 4 6.000 4.900 80.000 D4/D5 M8 X 1.25 4 8.000 6.200 90.000 D4/D5 M10 X 1.50 4 10.000 8.000 100.000 D4/D5 l l l l M12 X 1.75 4 9.000 7.000 110.000 D5/D6 M14 X 2.00 4 11.000 9.000 110.000 D5/D6 M16 X 2.00 4 12.000 9.000 110.000 D6/D7 M18 X 2.50 4 14.000 11.000 125.000 D6/D7 M20 X 2.50 4 16.000 12.000 140.000 D6/D7 Steam Oxide TiN TiCN MolyGlide® TiAlN 5.000 6.000 8.000 10.000 ° ° ° ° ° AlCrN 12.000 14.000 16.000 18.000 20.000 FIREX® #ASTæ)RONæANDæ!BRASIVEæ-ATERIALS DIN length - DIN shank Series 1860 - Carbide, Metric Fine, straight flute, bright finish, DIN 374, radial coolant No. Shank dia. Square Size Overall Length ISO2 (6H) DIN 374 Approx. Series Order Size Flutes mm dec. mm Limits 1860 No. M12 X 1.50 4 9.000 7.000 100.000 D5/D6 M14 X 1.50 4 11.000 9.000 100.000 D4/D5 M16 X 1.50 4 12.000 9.000 100.000 D4/D5 ° l ° 12.007 METRIC FINE ISO2 (6H) Class of Fit 14.007 16.007 Cut Taps Through or Blind Hole DIN length - DIN shank Series 1861 - Carbide, Metric Fine, straight flute, bright finish, DIN 371, radial coolant No. Shank dia. Square Size Overall Length ISO2 (6H) 0° Helix DIN 371 Approx. Series Order Size Flutes mm dec. mm Limits 1861 No. M5 X 0.50 4 6.000 4.900 70.000 D3/D4 M8 X 1.00 4 8.000 6.200 90.000 D4/D5 M10 X 1.00 4 10.000 8.000 90.000 D4/D5 l ° l 5.003 Straight Flute Chamfer Lead 8.005 10.005 C·2-3 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 81 #ASTæ)RONæANDæ!BRASIVEæ-ATERIALS DIN length - DIN shank METRIC FINE 6HX Class of Fit Series 318 - Cobalt, Metric, straight flute, TiAlN coated, DIN 371, axial coolant Series 1890 - Cobalt, Metric, straight flute, oxide finish, DIN 371, axial coolant DIN 371 DIN 371 Approx. Series Series Order 6HX No. Shank dia. Square Size Overall Length Size Flutes mm dec. mm Limits 318 1890 No. M5 X 0.80 4 6.000 4.900 70.000 D3/D4 4 6.000 4.900 80.000 D4/D5 M8 X 1.25 4 8.000 6.200 90.000 D4/D5 M10 X 1.50 4 10.000 8.000 100.000 D4/D5 l l l l l l l ° 5.000 M6 X 1.00 DIN 376 DIN 376 Approx. Series Series 6.000 8.000 10.000 Cut Taps Blind Hole 0° Helix DIN length - DIN shank Series 319 - Cobalt, Metric, straight flute, TiAlN coated, DIN 376, axial coolant Series 1897 - Cobalt, Metric, straight flute, oxide finish, DIN 376, axial coolant Straight Flute Chamfer Lead No. C·2-3 Shank dia. Square Size 6HX Overall Length Order Size Flutes mm dec. mm Limits 319 1897 No. M12 X 1.75 4 9.000 7.000 110.000 D5/D6 M14 X 2.00 4 11.000 9.000 110.000 D5/D6 M16 X 2.00 4 12.000 9.000 110.000 D6/D7 M18 X 2.50 5 14.000 11.000 125.000 D6/D7 M20 X 2.50 5 16.000 12.000 140.000 D6/D7 l l l l l l ° ° ° ° 12.000 DIN 374 DIN 374 Approx. Series Series 14.000 16.000 18.000 20.000 DIN length - DIN shank Series 1904 - Cobalt, Metric Fine, straight flute, oxide finish, DIN 374, axial coolant Series 347 - Cobalt, Metric Fine, straight flute, TiAlN coated, DIN 374, axial coolant No. 82 Bright Shank dia. Square Size Overall Length ISO2 (6H) Order Size Flutes mm dec. mm Limits 1904 347 No. M8 X 1.00 4 6.000 4.900 90.000 D4/D5 4 7.000 5.500 90.000 D4/D5 M12 X 1.00 4 9.000 7.000 100.000 D4/D5 M12 X 1.50 4 9.000 7.000 100.000 D5/D6 M14 X 1.50 4 11.000 9.000 100.000 D4/D5 M16 X 1.50 4 12.000 9.000 100.000 D4/D5 M18 X 1.50 5 14.000 11.000 110.000 D4/D5 M20 X 1.50 5 16.000 12.000 125.000 D6/D7 M22 X 1.50 5 18.000 14.500 125.000 D6/D7 M24 X 1.50 5 18.000 14.500 140.000 D6/D7 l ° ° l l l l ° l ° 8.005 M10 X 1.00 ° ° ° ° l l ° Steam Oxide TiN TiCN MolyGlide® TiAlN AlCrN 10.005 12.005 12.007 14.007 16.007 18.007 20.007 22.007 24.007 FIREX® #ASTæ)RONæANDæ!BRASIVEæ-ATERIALS DIN length - DIN shank Series 969 - Carbide, Metric, straight flute, bright finish, DIN 371, axial coolant Series 1883 - Carbide, Metric, straight flute, bright finish, DIN 376, axial coolant DIN 371 DIN 376 Approx. Series Series Order 1883 No. ISO2 (6H) Shank dia. Square Size Size Flutes mm dec. mm Limits 969 *M3 X 0.50 3 3.500 2.700 56.000 D2/D3 *M4 X 0.70 3 4.500 3.400 63.000 D3/D4 M5 X 0.80 4 6.000 4.900 70.000 D3/D4 M6 X 1.00 4 6.000 4.900 80.000 D4/D5 M8 X 1.25 4 8.000 6.200 90.000 D4/D5 M10 X 1.50 4 10.000 8.000 100.000 D4/D5 ° l l l l l M12 X 1.75 4 9.000 7.000 110.000 D5/D6 M14 X 2.00 4 11.000 9.000 110.000 D5/D6 M16 X 2.00 4 12.000 9.000 110.000 D6/D7 M18 X 2.50 4 14.000 11.000 125.000 D6/D7 M20 X 2.50 4 16.000 12.000 140.000 D6/D7 3.000 4.000 5.000 ISO2 (6H) Class of Fit 6.000 8.000 Cut Taps No. Overall Length METRIC / METRIC FINE 10.000 l l l ° l 12.000 14.000 Blind Hole 16.000 18.000 20.000 0° Helix * Sizes <M5 do not have coolant ducts through the tap Straight Flute Chamfer Lead DIN length - DIN shank Series 972 - Carbide, Metric Fine, straight flute, bright finish, DIN 371, axial coolant No. Shank dia. Square Size Overall Length Size Flutes mm dec. *M4 X 0.50 3 4.500 M5 X 0.50 4 6.000 M8 X 1.00 4 M10 X 1.00 4 ISO2 (6H) C·2-3 DIN 371 Approx. Series Order mm Limits 972 No. 3.400 63.000 D3/D4 70.000 D3/D4 8.000 6.200 90.000 D4/D5 10.000 8.000 90.000 D4/D5 ° ° ° ° 4.003 4.900 5.003 8.005 10.005 * Sizes <M5 do not have coolant ducts through the tap ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 83 BLACK RING CUT TAPS sæ4HROUGHæHOLE æææ5.# æææ5.& æææ-ETRICæ æææ-ETRICæFINE 0AGEæ 0AGEæ 0AGEæ 0AGEæ sæ"LINDæHOLE æææ5.# æææ5.& æææ-ETRICæ æææ-ETRICæFINE 0AGEæ 0AGEæ 0AGEæ 0AGEæ Note: Items marked as International Stock may become stocked in USA if sufficient volume is recognized. Recommended Tapping Speeds Material Specs SFM Silicon Content (cast Al) Brinell Hardness (wrought Al) < 6% n/a 6 - 10% > 10% n/a n/a 30 - 80 75-150 n/a n/a Bright finish Hard coated 30 - 50 25 - 35 -50 - 65 35 - 50 50 - 75 40 - 50 25 - 35 65 - 100 50 - 65 !LUMINUMæANDæ!LUMINUMæ!LLOYS ANSI length - ANSI shank UNC / UNF Series 3925 - Cobalt, UNC, spiral point, bright finish Series 3928 - Cobalt, UNC, spiral point, TiN coated Series 3967 - Cobalt, UNC, spiral point, MolyGlide® coated Cut Taps 2B Class of Fit Through Hole 0° Helix Plug Tap Chamfer Lead 2B No. Shank dia. Square Size Overall Length Size Flutes inch inch inch Limits 3925 3928 3967 No. 6-32 3 0.141 0.110 2.000 H3/H4 3 0.168 0.131 2.130 H3/H4 10-24 3 0.194 0.152 2.382 H3/H4 12-24 3 0.220 0.165 2.382 H3/H4 1/4-20 3 0.255 0.191 2.500 H4/H5 5/16-18 3 0.318 0.238 2.720 H4/H5 l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l 3.505 8-32 Approx. Series Series Series Approx. Series Series Series Order 3/8-16 3 0.381 0.286 2.941 H5/H6 7/16-14 3 0.323 0.242 3.157 H5/H6 1/2-13 3 0.367 0.275 3.381 H5/H6 5/8-11 3 0.480 0.360 3.811 H5/H6 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 15.875 B · 3.5 - 5 ANSI length - ANSI shank Series 3926 - Cobalt, UNF, spiral point, bright finish Series 3929 - Cobalt, UNF, spiral point, TiN coated Series 3968 - Cobalt, UNF, spiral point, MolyGlide® coated No. 86 Bright Shank dia. Square Size Overall Length 2B Order Size Flutes inch inch inch Limits 3926 3929 3968 No. 6-40 3 0.141 0.110 2.000 H2/H3 l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l 3.505 8-36 3 0.168 0.131 2.130 H2/H3 10-32 3 0.194 0.152 2.382 H3/H4 12-28 3 0.220 0.165 2.382 H3/H4 1/4-28 3 0.255 0.191 2.500 H3/H4 5/16-24 3 0.318 0.238 2.720 H3/H4 3/8-24 3 0.381 0.286 2.941 H3/H4 7/16-20 3 0.323 0.242 3.157 H4/H5 1/2-20 3 0.367 0.275 3.381 H4/H5 5/8-18 3 0.480 0.360 3.811 H4/H5 Steam Oxide TiN TiCN MolyGlide® TiAlN AlCrN 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 15.875 FIREX® !LUMINUMæANDæ!LUMINUMæ!LLOYS ANSI length - ANSI shank Series 3924 - Cobalt, Metric, spiral point, bright finish, chamfer type B Series 3927 - Cobalt, Metric, spiral point, TiN coated, chamfer type B Series 3966 - Cobalt, Metric, spiral point, MolyGlide® coated, chamfer type B Shank dia. Square Size Overall Length Size Flutes inch inch M3 X 0.50 3 0.141 M4 X 0.70 3 0.168 M5 X 0.80 3 0.194 M6 X 1.00 3 ISO2 (6H) Class of Fit ISO2 (6H) Approx. Series Series Series Order inch Limits 3924 3927 3966 No. 0.110 1.941 D2/D3 2.130 D3/D4 0.152 2.382 D3/D4 0.255 0.191 2.500 D4/D5 l l l l l l l l l l l l l l l l l l l l l l l l l l l 3.000 0.131 M8 X 1.25 3 0.318 0.238 2.720 D4/D5 M10 X 1.50 3 0.381 0.286 2.941 D4/D5 M12 X 1.75 3 0.367 0.275 3.381 D5/D6 M14 X 2.00 3 0.429 0.322 3.591 D5/D6 M16 X 2.00 3 0.480 0.360 3.811 D6/D7 4.000 5.000 Through Hole 6.000 8.000 10.000 Cut Taps No. METRIC 0° Helix 12.000 14.000 16.000 Plug Tap Chamfer Lead B · 3.5 - 5 DIN length - DIN shank Series 1858 - Carbide, Metric, bright finish, DIN 371, radial coolant, chamfer type C Series 1859 - Carbide, Metric, bright finish, DIN 376, radial coolant, chamfer type C DIN 376 Approx. Series Series Order 1859 No. No. Shank dia. Square Size Overall Length Size Flutes mm mm mm Limits 1858 M5 X 0.80 4 6.000 4.900 70.000 D3/D4 M6 X 1.00 4 6.000 4.900 80.000 D4/D5 M8 X 1.25 4 8.000 6.200 90.000 D4/D5 M10 X 1.50 4 10.000 8.000 100.000 D4/D5 l l l l M12 X 1.75 4 9.000 7.000 110.000 D5/D6 M14 X 2.00 4 11.000 9.000 110.000 D5/D6 M16 X 2.00 4 12.000 9.000 110.000 D6/D7 M18 X 2.50 4 14.000 11.000 125.000 D6/D7 M20 X 2.50 4 16.000 12.000 140.000 D6/D7 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS C·2-3 DIN 371 ISO2 (6H) 5.000 6.000 8.000 10.000 ° ° ° ° ° 12.000 14.000 16.000 18.000 20.000 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 87 !LUMINUMæANDæ!LUMINUMæ!LLOYS DIN length - DIN shank METRIC FINE Cut Taps ISO2 (6H) Class of Fit Through Hole Series 1860 - Carbide, Metric Fine, bright finish, DIN 371, radial coolant Series 1861 - Carbide, Metric Fine, bright finish, DIN 376, radial coolant No. Shank dia. Square Size Overall Length DIN 371 DIN 376 Approx. Series Series 1860 1861 No. l ° l 5.003 ISO2 (6H) Size Flutes mm mm mm Limits M5 X 0.80 4 6.000 4.900 70.000 D5/D6 M8 X 1.25 4 8.000 6.200 90.000 D4/D5 M10 X 1.50 4 10.000 8.000 100.000 D4/D5 M12 X 1.75 4 9.000 7.000 110.000 D3/D4 M14 X 2.00 4 11.000 9.000 110.000 D4/D5 M16 X 2.00 4 12.000 9.000 110.000 D4/D5 ° l ° Order 8.005 10.005 12.007 14.007 16.007 0° Helix Plug Tap Chamfer Lead C·2-3 88 Bright Steam Oxide TiN TiCN MolyGlide® TiAlN AlCrN FIREX® !LUMINUMæANDæ!LUMINUMæ!LLOYS ANSI length - ANSI shank Series 3931 - Cobalt, UNC, 45° helix, bright finish Series 3934 - Cobalt, UNC, 45° helix, TiN coated Series 3970 - Cobalt, UNC, 45° helix, MolyGlide® coated Size No. Shank dia. Square Size Overall Length Flutes inch inch inch UNC / UNF 2B Approx. Series Series Series Order Limits 3931 3934 3970 No. l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l 3.505 2 0.141 0.110 2.000 H3/H4 2 0.168 0.131 2.130 H3/H4 10-24 2 0.194 0.152 2.382 H3/H4 12-24 2 0.220 0.165 2.382 H3/H4 1/4-20 2 0.255 0.191 2.500 H4/H5 5/16-18 2 0.318 0.238 2.720 H4/H5 3/8-16 2 0.381 0.286 2.941 H5/H6 7/16-14 2 0.323 0.242 3.157 H5/H6 1/2-13 2 0.367 0.275 3.381 H5/H6 5/8-11 3 0.480 0.360 3.813 H5/H6 4.166 4.826 5.486 6.350 Blind Hole Cut Taps 6-32 8-32 2B Class of Fit 7.938 9.525 45° Helix 11.113 12.700 15.875 Semi-bottoming Chamfer Lead ANSI length - ANSI shank Series 3932 - Cobalt, UNF, 45° helix, bright finish Series 3935 - Cobalt, UNF, 45° helix, TiN coated Series 3971 - Cobalt, UNF, 45° helix, MolyGlide® coated C · 2-3 2B No. Shank dia. Square Size Overall Length Size Flutes inch inch inch Limits 3932 3935 3971 No. 6-40 2 0.141 0.110 2.000 H2/H3 2 0.168 0.131 2.130 H2/H3 10-32 2 0.194 0.152 2.382 H3/H4 12-28 2 0.220 0.165 2.382 H3/H4 1/4-28 2 0.255 0.191 2.500 H3/H4 5/16-24 2 0.318 0.238 2.720 H3/H4 3/8-24 2 0.381 0.286 2.941 H3/H4 l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l 3.505 8-36 Approx. Series Series Series Order 7/16-20 2 0.323 0.242 3.157 H4/H5 1/2-20 2 0.367 0.275 3.381 H4/H5 5/8-18 3 0.480 0.360 3.811 H4/H5 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 15.875 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 89 !LUMINUMæANDæ!LUMINUMæ!LLOYS ANSI length - ANSI shank METRIC Series 3930 - Cobalt, Metric, 45° helix, bright finish Series 3933 - Cobalt, Metric, 45° helix, TiN coated Series 3969 - Cobalt, Metric, 45° helix, MolyGlide® coated ISO2 (6H) Class of Fit Cut Taps Blind Hole 45° Helix 15° Helix Semi-bottoming Chamfer Lead No. Shank dia. ISO2 (6H) Overall Length Square Size Approx. Series Series Series Order Size Flutes inch inch inch Limits 3930 3933 3969 No. M3 X 0.50 2 0.141 0.110 1.941 D2/D3 M4 X 0.70 2 0.168 0.131 2.130 D3/D4 M5 X 0.80 2 0.194 0.152 2.382 D3/D4 M6 X 1.00 2 0.255 0.191 2.500 D4/D5 M8 X 1.25 2 0.318 0.238 2.720 D4/D5 M10 X 1.50 2 0.381 0.286 2.941 D4/D5 M12 X 1.75 2 0.367 0.275 3.381 D5/D6 M14 X 2.00 3 0.429 0.322 3.591 D5/D6 M16 X 2.00 3 0.480 0.360 3.811 D6/D7 l l l l l l l l l l l l l l l l l l l l l l l l l l l 3.000 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 DIN length - DIN shank Series 971 - Carbide, Metric, 15° helix, bright finish, DIN 371, axial coolant C · 2-3 No. Shank dia. ISO2 (6H) Overall Length Square Size DIN 376 Approx. Series Order Size Flutes mm mm mm Limits 971 No. *M3 X 0.50 3 3.500 2.700 56.000 D2/D3 *M4 X 0.70 3 4.500 3.400 63.000 D3/D4 M5 X 0.80 3 6.000 4.900 70.000 D3/D4 M6 X 1.00 3 6.000 4.900 80.000 D4/D5 M8 X 1.25 3 8.000 6.200 90.000 D4/D5 M10 X 1.50 3 10.000 8.000 100.000 D4/D5 ° ° l l l l 3.000 4.000 5.000 6.000 8.000 10.000 * Sizes <M5 do not have coolant ducts through the tap DIN length - DIN shank Series 969 - Carbide, Metric, bright finish, DIN 371, axial coolant Series 1883 - Carbide, Metric, bright finish, DIN 376, axial coolant No. Shank dia. Square Size Overall Length DIN 371 DIN 376 Approx. Series Series 1883 ISO2 (6H) Size Flutes mm mm mm Limits 969 *M3 X 0.50 3 3.500 2.700 56.000 D2/D3 ° l l l l l *M4 X 0.70 3 4.500 3.400 63.000 D3/D4 M5 X 0.80 4 6.000 4.900 70.000 D3/D4 M6 X 1.00 4 6.000 4.900 80.000 D4/D5 M8 X 1.25 4 8.000 6.200 90.000 D4/D5 M10 X 1.50 4 10.000 8.000 100.000 D4/D5 M12 X 1.75 4 9.000 7.000 110.000 D5/D6 M14 X 2.00 4 11.000 9.000 110.000 D5/D6 M16 X 2.00 4 12.000 9.000 110.000 D6/D7 M18 X 2.50 4 14.000 11.000 125.000 D6/D7 M20 X 2.50 4 16.000 12.000 140.000 D6/D7 Order No. 3.000 4.000 5.000 6.000 8.000 10.000 l l l ° l 12.000 14.000 16.000 18.000 20.000 * Sizes <M5 do not have coolant ducts through the tap 90 Bright Steam Oxide TiN TiCN MolyGlide® TiAlN AlCrN FIREX® !LUMINUMæANDæ!LUMINUMæ!LLOYS DIN length - DIN shank Series 978 - Carbide, Metric Fine, 15° helix, bright finish, DIN 374, axial coolant No. Shank dia. Square Size Overall Length Size Flutes mm mm M12 X 1.50 3 9.000 M14 X 1.50 3 M18 X 1.50 4 ISO2 (6H) DIN 374 Approx. Series Order mm Limits 978 No. 7.000 100.000 D5/D6 12.007 11.000 9.000 100.000 D4/D5 14.000 11.000 110.000 D4/D5 ° ° ° METRIC FINE ISO2 (6H) Class of Fit 14.007 18.007 DIN length - DIN shank 15° Helix 0° Helix Series 972 - Carbide, Metric Fine, straight flute, bright finish, DIN 371, axial coolant No. Shank dia. Square Size Overall Length Size Flutes mm mm *M4 X 0.50 3 4.500 M5 X 0.50 4 6.000 M8 X 1.00 4 M10 X 1.00 3 ISO2 (6H) Cut Taps Blind Hole DIN 371 Approx. Series Order mm Limits 972 No. 3.400 63.000 D3/D4 70.000 D3/D4 8.000 6.200 90.000 D4/D5 10.000 8.000 90.000 D4/D5 ° ° ° ° 4.003 4.900 Semi-bottoming Chamfer Lead 5.003 8.005 10.005 * Sizes <M5 do not have coolant ducts through the tap C · 2-3 DIN length - DIN shank C · 2-3 Series 977 - Carbide, Metric Fine, 15° helix, bright finish, DIN 371, axial coolant No. Shank dia. Square Size Overall Length ISO2 (6H) DIN 371 Approx. Series Order Size Flutes mm mm mm Limits 977 No. *M4 X 0.50 3 4.500 3.400 63.000 D3/D4 M5 X 0.50 3 6.000 4.900 70.00 D3/D4 M6 X 0.50 3 6.000 4.900 80.000 D3/D4 M8 X 1.00 3 8.000 6.200 90.000 D4/D5 M10 X 1.00 3 10.000 8.000 90.000 D4/D5 ° ° ° ° ° 4.003 5.003 6.003 8.005 10.005 * Sizes <M5 do not have coolant ducts through the tap ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 91 TI / NI CUT TAPS sæ4HROUGHæHOLE æææ5.# æææ5.& æææ-ETRICæ æææ-ETRICæFINE 0AGEæ 0AGEæ 0AGEæ 0AGEæ sæ"LINDæHOLE æææ5.# æææ5.& æææ-ETRICæ æææ-ETRICæFINE 0AGEæ 0AGEæ 0AGEæ 0AGEæ Note: Items marked as International Stock may become stocked in USA if sufficient volume is recognized. Recommended Tapping Speeds Material Hardness HRC Ti / Ti Alloys -- SFM Brinell Bright finish Hard coated 140 - 275 12 - 25 -Ni Alloys -- 300 - 380 6 - 12 as conditions permit 200 - 300 6 - 12 -- > 300 3-6 as conditions permit 4ITANIUMæ4Iæ!LLOYSæANDæ.ICKELæ.Iæ!LLOYS DIN length - DIN shank UNC / UNF Cut Taps 2BX Class of Fit Through Hole 0° Helix Series 2905‡ - PM cobalt, UNC, spiral point, TiCN coated, DIN 371, 2B class of fit, for Titanium Series 2918 - PM cobalt, UNC, spiral point, TiAlN coated, DIN 371, 3B class of fit, for Nickel 2B DIN 371 3B DIN 371 No. Shank dia. Square Size Overall Length Approx. Ti Series Approx. Ni Series Order Size Flutes mm mm mm Limits 2905 Limits 2918 No. 6-32 3 4.000 3.000 56.000 H3/H4 4.500 3.400 63.000 H3/H4 10-24 3 6.000 4.900 70.000 H3/H4 12-24 3 6.000 4.900 80.000 H3/H4 1/4-20 3 7.000 5.500 80.000 H4/H5 l l l l l l l 3.505 3 l l l l l l l H2 8-32 5/16-18 4 8.000 6.200 90.000 H4/H5 3/8-16 4 9.000 7.000 100.000 H5/H6 H2 H3 H3 H3 H3 H3 4.166 4.826 5.486 6.350 7.938 9.525 ‡ Series 2905 replaces series 2904, due to a design change. Series 2904 inventory will be available while supplies last. Plug Tap Chamfer Lead DIN length - DIN shank Series 2907‡ - PM cobalt, UNF, spiral point, TiCN coated, DIN 371, 2B class of fit, for Titanium Series 2919 - PM cobalt, UNF, spiral point, TiAlN coated, DIN 371, 3B class of fit, for Nickel B · 3.5 - 5 No. Shank dia. Square Size Overall Length 2B DIN 371 DIN 371 3B Approx. Ti Series Approx. Ni Series Order Size Flutes mm mm mm Limits 2907 Limits 2919 No. 6-40 3 4.000 3.000 56.000 H2/H3 3 4.500 3.400 63.000 H2/H3 10-32 3 6.000 4.900 70.000 H3/H4 12-28 3 6.000 4.900 80.000 H3/H4 1/4-28 3 7.000 5.500 80.000 H3/H4 5/16-24 4 8.000 6.200 90.000 H3/H4 3/8-24 4 9.000 8.000 90.000 H3/H4 l l l l l l l 3.505 8-36 l l l l l l l H2 H2 H2 H3 H3 H3 H3 4.166 4.826 5.486 6.350 7.938 9.525 ‡ Series 2907 replaces series 2906, due to a design change. Series 2906 inventory will be available while supplies last. 94 Bright Steam Oxide TiN TiCN MolyGlide® TiAlN AlCrN FIREX 4ITANIUMæ4Iæ!LLOYSæANDæ.ICKELæ.Iæ!LLOYS DIN length - DIN shank Series 2901‡ - PM cobalt, Metric, spiral point, TiCN coated, DIN 371, for Titanium Series 2916 - PM cobalt, Metric, spiral point, TiAlN coated, DIN 371, for Nickel DIN 371 DIN 371 Approx. Ti Series Ni Series Order ISO2 (6H) No. Shank dia. Square Size Overall Length Size Flutes mm mm mm Limits 2901 2916 No. M3 X 0.50 3 2.800 2.700 56.000 D2/D3 3 4.500 3.400 63.000 D3/D4 M5 X 0.80 3 6.000 4.900 70.000 D3/D4 M6 X 1.00 3 6.000 4.900 80.000 D4/D5 M8 X 1.25 3 8.000 6.200 90.000 D4/D5 M10 X 1.50 3 10.000 8.000 100.000 D4/D5 l ° ° l l ° ° ° l ° l l l ° ° ° 3.000 M4 X 0.70 4 9.000 7.000 110.000 D5/D6 M16 X 2.0 4 12.000 9.000 110.000 D6/D7 6HX Class of Fit 5.000 6.000 8.000 10.000 12.000 16.000 Through Hole ‡ Series 2901 replaces series 2900, due to a design change. Series 2900 inventory will be available while supplies last. 0° Helix Plug Tap Chamfer Lead DIN length - DIN shank Series 2903‡ - PM cobalt, Metric Fine, spiral point, TiCN coated, DIN 371, for Titanium Series 2917 - PM cobalt, Metric Fine, spiral point, TiAlN coated, DIN 371, for Nickel No. Shank dia. Square Size Overall Length DIN 371 DIN 371 Approx. Ti Series Ni Series ISO2 (6H) Order Size Flutes mm mm mm Limits 2903 2917 No. M3 X 0.35 3 3.500 2.700 56.000 D2/D3 M4 X 0.50 3 4.500 3.400 63.000 D3/D4 M5 X 0.50 3 6.000 4.900 70.000 D3/D4 M6 X 0.50 3 6.000 4.900 80.000 D3/D4 M6 X 0.75 3 6.000 4.900 80.000 D3/D4 ° ° ° ° l M8 X 0.50 3 8.000 6.200 80.000 D3/D4 M8 X 0.75 3 8.000 6.200 80.000 D3/D4 M8 X 1.00 3 8.000 6.200 90.000 D4/D5 M10 X 1.00 3 10.000 8.000 90.000 D4/D5 M10 X 1.25 3 10.000 8.000 100.000 D4/D5 ° ° ° ° ° ° ° ° ° l 3.002 ° ° ° B · 3.5 - 5 4.003 5.003 6.003 6.004 8.003 8.004 8.005 10.005 10.006 ‡ Series 2903 replaces series 2902, due to a design change. Series 2902 inventory will be available while supplies last. ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 95 Cut Taps M12 X 1.75 4.000 METRIC / METRIC FINE 4ITANIUMæ4Iæ!LLOYSæANDæ.ICKELæ.Iæ!LLOYS UNC / UNF DIN length - DIN shank Series 2912 - PM cobalt, UNC, 15° helix, TiCN coated, DIN 371, 2B class of fit, for Titanium Series 2922 - PM cobalt, UNC, 10° helix, TiAlN coated, DIN 371, 3B class of fit, for Nickel Cut Taps 2BX Class of Fit Blind Hole 15° / 10° Helix Semi-bottoming Chamfer Lead 2B DIN 371 3B DIN 371 No. Shank dia. Square Size Overall Length Approx. Ti Series Approx. Ni Series Order Size Flutes mm mm mm Limits 2912 Limits 2922 No. 4-40 3 3.500 2.700 56.000 H2/H3 3.500 2.700 56.000 H2/H3 6-32 3 4.000 3.000 56.000 H3/H4 8-32 3 4.500 3.400 63.000 H3/H4 10-24 3 6.000 4.900 70.000 H3/H4 12-24 3 6.000 4.900 80.000 H3/H4 1/4-20 3 7.000 5.500 80.000 H4/H5 l l l l l l l l l l l l 2.845 3 l l l l l l l l l l l l H2 5-40 5/16-18 3 8.000 6.200 90.000 H4/H5 3/8-16 4 10.000 8.000 100.000 H5/H6 7/16-14* 4 8.000 6.200 100.000 H5/H6 1/2-13* 4 9.000 7.000 110.000 H5/H6 5/8-11* 4 12.000 9.000 110.000 H5/H6 H2 H2 H2 H3 H3 H3 H3 H3 H3 H3 H3 3.175 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 15.875 C · 2-3 DIN length - DIN shank Series 2914 - PM cobalt, UNF, 15° helix, TiCN coated, DIN 371, 2B class of fit, for Titanium Series 2923 - PM cobalt, UNF, 10° helix,TiAlN coated, DIN 371, 3B class of fit, for Nickel 2B DIN 371 3B DIN 371 No. Shank dia. Square Size Overall Length Size Flutes mm mm mm Limits 2914 Limits 2923 No. 4-48 3 0.138 0.106 2.205 H2/H3 0.138 0.106 2.205 H2/H3 6-40 3 4.000 3.000 56.000 H2/H3 8-36 3 4.500 3.400 63.000 H2/H3 10-32 3 6.000 4.900 70.000 H3/H4 l l l l l l l l l l l l 2.845 3 l l l l l l l l l l l l H1 5-44 Approx. Ti Series Approx. Ni Series Order 12-28 3 6.000 4.900 80.000 H3/H4 1/4-28 3 7.000 5.500 80.000 H3/H4 5/16-24 3 8.000 6.200 90.000 H3/H4 3/8-24 4 10.000 8.000 90.000 H3/H4 7/16-20* 4 8.000 6.200 100.000 H4/H5 1/2-20* 4 9.000 7.000 110.000 H4/H5 5/8-18* 4 12.000 9.000 110.000 H4/H5 H1 H2 H2 H2 H3 H3 H3 H3 H3 H3 H3 3.175 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 15.875 *Denotes sizes manufactured to DIN 376 standards. 96 Bright Steam Oxide TiN TiCN MolyGlide® TiAlN AlCrN FIREX® 4ITANIUMæ4Iæ!LLOYSæANDæ.ICKELæ.Iæ!LLOYS DIN length - DIN shank Series 2909‡ - PM cobalt, Metric, 15° helix, TiCN coated, DIN 371, for Titanium Series 2920 - PM cobalt, Metric, 10° helix, TiAlN coated, DIN 371, for Nickel No. Shank dia. Square Size Overall Length DIN 371 DIN 371 Approx. Ti Series Ni Series ISO2 (6H) Order Size Flutes mm mm mm Limits 2909 2920 No. M3 X 0.50 3 3.500 2.700 56.000 D2/D3 3 4.500 3.400 63.000 D3/D4 M5 X 0.80 3 6.000 4.900 70.000 D3/D4 M6 X 1.00 3 6.000 4.900 80.000 D4/D5 M8 X 1.25 3 8.000 6.200 90.000 D4/D5 M10 X 1.50 3 10.000 8.000 100.000 D4/D5 l l l l l l ° ° 3.000 M4 X 0.70 ° ° ° l ° ° ° ° 4 9.000 7.000 110.000 D5/D6 M16 X 2.0 4 12.000 9.000 110.000 D6/D7 5.000 6HX Class of Fit 6.000 8.000 Cut Taps M12 X 1.75 4.000 METRIC / METRIC FINE 10.000 12.000 16.000 Blind Hole ‡ Series 2909 replaces series 2908, due to a design change. Series 2908 inventory will be available while supplies last. 15° / 10° Helix Semi-bottoming Chamfer Lead DIN length - DIN shank Series 2910 - PM cobalt, Metric Fine, 15° helix, TiCN coated, DIN 371, for Titanium Series 2921 - PM cobalt, Metric Fine, 10° helix, TiAlN coated, DIN 371, for Nickel DIN 371 DIN 371 Approx. Ti Series Ni Series Order ISO2 (6H) C · 2-3 No. Shank dia. Square Size Overall Length Size Flutes mm mm mm Limits 2910 2921 No. M3 X 0.35 3 3.500 2.700 56.000 D2/D3 3 4.500 3.400 63.000 D3/D4 M5 X 0.50 3 6.000 4.900 70.000 D3/D4 M6 X 0.50 3 6.000 4.900 80.000 D3/D4 M6 X 0.75 3 6.000 4.900 80.000 D3/D4 ° ° ° ° ° M8 X 0.50 3 8.000 6.200 80.000 D3/D4 M8 X 0.75 3 8.000 6.200 80.000 D3/D4 M8 X 1.00 3 8.000 6.200 90.000 D4/D5 M10 X 1.00 3 10.000 8.000 90.000 D4/D5 M10 X 1.25 3 10.000 8.000 100.000 D4/D5 l l l l l l l l l l 3.002 M4 X 0.50 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS ° ° ° 4.003 5.003 6.003 6.004 8.003 8.004 8.005 10.005 10.006 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 97 98 General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys Titanium or Nickel Form Taps General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys Titanium or Nickel 99 Form Taps Fluteless taps and thread forming &LUTELESSæTAPSæAREæUSEDæFORæTHEæFORMINGæOFæINTERNALæTHREADSæ WITHOUTæ CHIPæ REMOVALæ )Næ CONTRASTæ TOæ CONVENTIONALæ TAPPINGæ WHEREæ MATERIALæ ISæ CUTæ FROMæ THEæ WORKPIECEæ THREADæ FORMINGæ ISæAæPRESSUREæDEFORMATIONæPROCESSæWITHOUTæCHIPæREMOVALæFORæ THEæPRODUCTIONæOFæINTERNALæTHREADSæ$URINGæTHEæPROCESSæTHEæ MATERIALæISæCOLDæFORMEDæWITHOUTæINTERRUPTINGæTHEæGRAINæFLOW æ !CCORDINGæ TOæ $).æ æ THREADæ FORMINGæ ISæ DESCRIBEDæ ASæ hPRESSINGæTHEæTHREADæINTOæTHEæWORKPIECEæWITHæAæTOOLæPOSSESSINGæ Aæ SPIRALæ WORKINGæ AREAvæ æ 4HEæ SPIRALæ THREADEDæ POLYGONALæ PORTIONæOFæTHEæFLUTELESSæTAPæISæhSCREWEDvæINTOæTHEæPREDRILLEDæ WORKPIECEæWITHæANæAPPROPRIATEæCONSTANTæFEEDæRATEæEQUALæTOæ THEæTHREADæPITCHæ4HEæTHREADæPROFILEæISæPRESSEDæGRADUALLYæVIAæ THEæ FORMINGæ LEADæ INTOæ THEæ MATERIALæ OFæ THEæ WORKPIECEæ SOæ TOæ SPEAKæ3UBSEQUENTLYæTHEæPRESSUREæINæTHEæDEFORMATIONæZONEæ EXCEEDSæ THEæ COMPRESSIONæ LIMITæ THEæ WORKPIECEæ BECOMESæ DUCTILEæANDæISæDEFORMEDæ4HEæMATERIALæYIELDSæRADIALLYæhFLOWSvæ ALONGæTHEæTHREADæPROFILEæINæTHEæUNOCCUPIEDæBASEæOFæTHEæTOOLæ ANDæ FORMSæ THEæ MINORæ DIAMETERæ OFæ THEæ NUTæ THREADæ4HEæ FLOWæ PROCESSæCREATESæTHEæPROCESSæSPECIFICæFORMæPOCKETSæCLAWSæ æ 4HEæTAPPINGæSIZEæHOLEæDIAMETERæISæHEAVILYæDEPENDENTæONæTHEæ FORMABILITYæ OFæ THEæ MATERIALæ THEæ WORKPIECEæ GEOMETRYæ ANDæ THEæ REQUIREDæ EFFECTIVEæ DEPTHæ OFæ THEæ THREADæ )Næ COMPARISONæ TOæCONVENTIONALæTAPPINGæAæLARGERæDIAMETERæTAPPINGæSIZEæHOLEæ SHOULDæBEæSELECTEDæ7ITHæAæLARGERæDIAMETERæTAPPINGæSIZEæHOLEæ THEæLOADæONæTHEæTOOLæISæREDUCEDæWHILEæINCREASINGæTHEæTOOLæLIFEæ 4HANKSæTOæTHEæUNINTERRUPTEDæGRAINæFLOWæTHEæLOADINGæCAPACITYæ OFæTHEæTHREADæREMAINSæSUFFICIENTæWITHæAææEFFECTIVEæTHREADæ DEPTH æ 4HEæ PARTIALLYæ FORMEDæ CRESTSæ OFæ THEæ THREADæ WITHæ DECREASINGæ EFFECTIVEæTHREADæDEPTHæAREæAæTYPICALæCHARACTERISTICæOFæTHREADSæ PRODUCEDæ BYæ THEæ THREADæ FORMINGæ PROCESSæ7ITHæ THEæ FLANKSæ OFæ THEæ THREADæ FULLYæ FORMEDæ THEYæ HAVEæ NOæ INFLUENCEæ ONæ THEæ 0ROCESSæ 4HEæPRODUCTIONæOFæINTERNALæTHREADSæWITHOUTæCHIPæREMOVALæ THREADæFORMINGæINæCOMPARISONæTOæCONVENTIONALæTAPPING &LUTELESSæTAP TENSILEæ STRENGTHæ OFæ THEæ THREADæ )Fæ NECESSARYæ THEæ REQUIREDæ DEFORMATIONæLEVELæOFæTHEæTHREADæSHOULDæBEæDETERMINDEDææBYæ PERFORMINGæAæTEST æ ,UBRICATIONæ ISæ OFæ SIGNIFICANTæ IMPORTANCEæ 4HEæ LUBRICATIONæ PREVENTSæ MATERIALæ FROMæ BUILDINGæ UPæ ONæ THEæ THREADæ FLANKSæ ANDæ ENSURESæ THATæ THEæ NECESSARYæ TORQUEæ FORæ THEæ FORMINGæ PROCESSæISæNOTæTOOæHIGHæ4HEREFOREæUNDERæNOæCIRCUMSTANCESæ SHOULDæ THEREæ EVERæ BEæ Aæ BREAKDOWNæ INæ LUBRICATIONæ 0REFERENCEæ SHOULDæ BEæ GIVENæ TOæ LUBRICANTSæ SUCHæ ASæ COOLINGæ AGENTSæ OFæ OILSæ CONTAININGæ GRAPHITEæ SUCHæ ASæ THOSEæ USEDæ INæ ROLLINGæ PROCESSESæ !LWAYSæ FOLLOWæ THEæ RULEæ h4HEæ BETTERæ THEæ LUBRICATIONæ THEæ EASIERæ THEæ THREADæ FORMINGæ PROCESSvæ )TæOFFERSæTHEæFOLLOWINGæADVANTAGES sæNOæCHIPæFORMATION sæONEæTOOLæFORæTHEæPRODUCTIONæOFæTHREADSæINæTHROUGHæANDæBLINDæ HOLES sæAPPLICATIONæINæWIDEæRANGEæOFæMATERIALS sæNOæCUTTINGæERRORS sæPITCHæANDæANGLEæOFæTHREADæERRORSæTHATæCANæOCCURæWITHæTHREADæ CUTTINGæAREæELIMINATED sæ INTERNALæ THREADSæ PRODUCEDæ BYæ THREADæ FORMINGæ POSSESSæ Aæ HIGHERæ TENSILEæ STRENGTHæ PARTICULARLYæ ATæ THEæ THREADæ FLANKSæ THANKSæTOæTHEæSOCALLEDæhUNINTERRUPTEDæGRAINæFLOWvæANDæTHEæ COLDæFORMINGæPROCESS sæTHEæSURFACEæOFæTHEæTHREADæISæIMPROVED sæFLUTELESSæTAPSæCANæBEæAPPLIEDæATæHIGHERæSPEEDSæBECAUSEæTHEæ FORMABILITYæOFæMANYæMATERIALSæINCREASESæWITHæTHEæFORMINGæ SPEEDæ4HISæ DOESæ NOTæ HAVEæ Aæ NEGATIVEæ EFFECTæ ONæ THEæ TOOLæ LIFE sæREDUCEDæDANGERæOFæBREAKAGEæTHROUGHæRIGIDæDESIGN &LOWæCHARACTERISTICSæOFæTHEæMATERIALæDURINGæTHREADæFORMINGæAND THEæDEFORMATIONæPROCESS $æ æNOM $æ æFLANK $Kæ æHOLE (æ æPROFILEæHEIGHT 0æ æPITCH !æ æFORMæPOCKETæCLAW FINISHEDæNUTæTHREAD #ONVENTIONALæTAP PRESSUREæPOINTS FLUTES FLUTELESSæTAP P D2 OILæGROOVES Dk FORMEDæ THREAD FORMINGæLEAD CUTæ THREAD CHAMFERæ EAD D FORMINGæLEAD 100 A H WORKPIECE 'UHRINGSæNEWæFLUTELESSæTAPSææ#HARACTERISTICSæANDæADVANTAGES #ROSSæSECTIONæOFæFLUTELESSæTAP &ORæ THEæ USERæ Aæ LONGERæ TOOLæ LIFEæ ANDæ INCREASEDæ CUTTINGæ SPEEDSæ AREæ THEæ BENEFITSæ OFæ THISæ SPECIALæ PROCESSæ 4HEæ TOOLæLIFEæCANæBEæINCREASEDæCONSIDERABLYæ DEPENDINGæ ONæ THEæ MATERIALæ TOæ BEæ MACHINEDæ ANDæ THEæ APPLICATIONæ CONDI TIONSæ!ææINCREASEæINæTOOLæLIFEæISæNOTæ UNUSUAL æ 4HEæ IMPROVEDæ SURFACEæ TOPOGRAPHYæ ISæ NOTæ ONLYæ OFæ BENEFITæ TOæ TOOLSæ WITHæ BRIGHTæ FINISHæ 0ARTICULARLYæ COATEDæ TOOLSæ ALSOæ BENEFITæ FROMæ THEæ NEWæ PROCESSæ /UTERæ CONTOURæ ANDæ FORMINGæ LEADæ GREATLYæ DETERMINEæ THEæ PERFORMANCEæ OFæ THEæ FLUTELESSæ TAPæ .UMEROUSæ TESTSæ HAVEæ SHOWNæ THATæ FLUTELESSæ TAPSæ WITHæ OPTIMALæ PRESSUREæ POINTæ GEOMETRYæ ANDæ QUANTITYæACHIEVEæINCREASEDæTOOLæLIFEæANDæ DIMENSIONALæACCURACYæ æ &URTHERæ IMPROVEMENTSæ INæ QUALITYæ AREæ ACHIEVEDæ WHENæ THEæ FLUTELESSæ TAPæ ISæ PRODUCEDæ COMPLETELYæ INæ ONEæ SETTINGæ ANDæ WITHæ ONEæ GRINDINGæ WHEELæ æ SETUPæ WITHæAæSPECIALæROLLæ0ITCHæERRORSæBETWEENæ THEæ THREADæ CRESTSæ ANDæ FORMERæ LEADæ TRANSITIONæAREAæDOæNOTæOCCURæASæWITHæTHEæ CONVENTIONALæGRINDINGæPROCESSæ Form Taps #ONVENTIONALæ FLUTELESSæ TAPSæ PRODUCEDæ BYæAæGRINDINGæPROCESSæONLYæSHOWæTRACESæ OFæ MICROSCOPICæ VERYæ FINEæ GRINDINGæ MARKSæ ONæ THEæ SURFACEæ OFæ THEæ TOOLæ4HISæ ALSOæAPPLIESæTOæTHEæTHREADEDæPORTIONæOFæ THEæTOOLæREQUIREDæTOæPERFORMæTHEæTHREADæ FORMINGæOPERATIONæ æ 4HISæ SURFACEæ TOPOGRAPHYæ STRUCTUREæ HASæ Aæ NEGATIVEæ EFFECTæ ONæ THEæ FRICTIONæ BETWEENæTHEæTOOLæANDæTHEæMATERIALæTOæBEæ REFORMEDæ ASæ WELLæ ASæ ONæ THEæ HEREWITHæ ASSOCIATEDæ HEATæ DEVELOPMENTæ ONæ THEæ NECESSARYæTORQUEæANDæLASTæBUTæNOTæLEASTæ ONæ THEæ WEARæ OFæ THEæ PRESSUREæ POINTSæ OFæ THEæ FLUTELESSæ TAPæ )Næ ADDITIONæ THEæ hGRINDINGæMARKSvæENCOURAGEæTHEæBUILD UPæ OFæ THEæ MATERIALæ TOæ BEæ REFORMEDæ INæ THEæ THREADæ FLANKSæ OFæ THEæ FLUTELESSæ TAPæ 4HISæISæALSOæCALLEDæCOLDæWELDING æ 4HANKSæTOæAæSPECIALæPROCESSæTOæIMPROVEæ THEæ SURFACEæ TOPOGRAPHYæ STRUCTUREæ 'UHRINGSæNEWæ0ROFILEæFLUTELESSæTAPSæNOæ LONGERæPOSSESSæTHESEæhGRINDINGæMARKSvæ 4HISæ HASæ BEENæ CONFIRMEDæ INæ RESEARCHæ ANDæTOOLæLIFEæSTUDIESæINæVARYINGæMATERIALSæ UNDERæPRODUCTIONæCONDITIONS æ æ æ æ æ 3URFACEæOFæAæCONVENTIONALæ FLUTELESSæTAP /PTIMISEDæSURFACEæOFæAæ'UHRINGæ0ROFILEæ FLUTELESSæTAP 4HEæPRINCIPLE 4YPESæOFæTAPPINGæSIZEæHOLE æ WITHæFLUTELESSæTAPSæWITHOUTæOILæGROOVESæ FORæTHREADæDEPTHæéææXæ$ X DETAILæX $ææFLANKæDIAMETER $ææNOMINALæDIAMETER FORMINGæ LEAD $ THREADæPORTION æFORæTHREADæDEPTHæêææXæ$ WITHæFLUTELESSæTAPSæWITHæOILæGROOVESæ FORæALLæTHREADæDEPTHS $ TAPPINGæ SIZEæHOLE NOM 101 Definitions, angles, centers, thread tolerances and fits Thread portion CHAMFERææ LEADæLENGTH OILæGROOVES æ SHANKæDIA GUIDEæ SECTION LENGTHæOFæDRIVINGæ SQUARE DRIVINGæ SQUARE WITHOUTæOILæGROOVES THREADæ LENGTH FLUTEææ LENGTH WITHæOILæGROOVES OVERALLæLENGTH 4YPESæOFæCENTRESæSTANDARDæTOæ$).æ$).æ SOLIDæCONE 1 4 SOLIDæCONE ONæCUTTINGæ SECTION STEPPEDæCONE 2 ONæ SHANK 5 CHAMFER INTERNALæCENTERæ FORMæ!æORæ2æTOæ$).ææ 3 ACCæTOæMANUFACTæSPECIFICATION Form Taps INTERNALæCENTERæ 6 FORMæ!æORæ2æTOæ$).ææ ACCæTOæMANUFACTæSPECIFICATION #ENTERæONæCUTTINGæSECTION æ 4HREADæDIAæRANGEæ MM WITHæCHAMFERæFORMSææ !æ#æ$æ% WITHæCHAMFERæFORMæ " #ENTERæONæSHANKæ ➀ ➀➁➂ ➂ ➀ ➀➁➂ ➂ ➃➄➅ ➃➄➅ ➅ éæ ææxæ æ Thread tolerances and fits &ITSæBETWEENæINTERNALæANDæEXTERNALæTHREADSæAREæSEPARATEDæBYæ Aæ DIAGONALæ STROKEæ ASæ FORæ EXAMPLEæ (Gæ INTERNALEXTERNALæ THREADæ4HEæ FITæ HASæ TOæ BEæ SELECTEDæ INæ CONJUNCTIONæ WITHæ THEæ APPROPRIATEæTHREADæCONNECTION 4HEæTOLERANCEæZONESæOFæTHEæTOLERANCEæCLASSESæFINEæMEDIUMæ ANDæCOARSEæAREæALLOCATEDæTOæTHREEæSCREWINæLENGTHSæSHORTæ3æ NORMALæ.æANDæLONGæ,æ'ENERALLYæTHEæFOLLOWINGæRULESæAPPLYæ FORæSELECTINGæAæTOLERANCEæCLASS -EDIUMæTOLERANCEæZONEæ. 'ENERALæAPPLICATION #OARSEæTOLERANCEæZONEæ, 4HEREæ AREæ NOæ SPECIALæ PRECISIONæ REQUIREMENTSæ ANDæ INæ CASESæ WHEREæ PRODUCTIONæ DIFFICULTIESæ MAYæ OCCURæ EGæ THREADæ PRO DUCTIONæINæHOTROLLEDæRODSæDEEPæBLINDæHOLESæORæPLASTICæCOM PONENTS &INEæTOLERANCEæZONEæ3 &ORæPRECISIONæTHREADSæWHENæONLYæAæSMALLæVARIATIONæINæTHEæFITæ ISæPERMITTED 3CREWINæLENGTHS 4HEæ QUALITYæ OFæ THREADæ CONNECTIONæ ISæ ALSOæ AFFECTEDæ BYæ THEæ 4HEæ FOLLOWINGæ FITæ SHOULDæ BEæ SELECTEDæ FORæ NORMALæ SCREWINæ SCREWINæLENGTHæ4HEæ)3/æTOLERANCEæSYSTEMæWASæESPECIALLYæASæ LENGTHæ. REGARDSæTHEæPITCHæDIAMETERæDIVIDEDæINTOæTHREEæGROUPSæIE 4OæENSUREæAæTIGHTERæFITæOFæTHREADæCONNECTIONSæWEæRECOMMENDæ FORæSHORTæSCREWINæLENGTHSæAæNARROWERæFITæ 3æ 3HORTæ .æ .ORMALæ ,æ ,ONGæ 102 æSHORTæSCREWINæLENGTHæ æNORMALæSCREWINæLENGTHæ æLONGæSCREWINæLENGTH 4HREADæFITæWITHæVARYINGæFLANKæCLEARANCE $IAMETERæ$æ OFæ INTERNALæTHREAD $IAMETERæDæ OFæ EXTERNALæTHREAD $IAMETERæ$æ OFæ INTERNALæTHREAD $IAMETERæDæ OFæ EXTERNALæTHREAD INTERNALæ THREAD INTERNALæ THREAD EXTERNALæ THREAD EXTERNALæ THREAD #OARSEæTHREADæFITæWITHæWIDEæFLANKæCLEARANCEæ'GæORæ'EFITæINæEXTERNALææ ANDæINTERNALæTHREAD &INEæTHREADæFITæWITHOUTæFLANKæCLEARANCEæ(HFIT $IAMETERæ$æ OFæ INTERNALæTHREAD $IAMETERæDæ OFæ EXTERNALæTHREAD INTERNALæ THREAD EXTERNALæ THREAD %XPLANATIONææ OFæSYMBOLS æ $æ æ æMAJORæDIAMETERæOFæINTERNALæTHREAD $æ æ æNOMINALæDIAMETERæOFæTAPPINGæSIZEæHOLE $æ æ æEFFECTIVEæDIAMETERæOFæINTERNALæTHREAD Dæ æ æMAJORæDIAMETERæOFæEXTERNALæTHREAD Dæ æ æEFFECTIVEæDIAMETERæOFæEXTERNALæTHREAD Dæ æ æROOTæDIAMETERæOFæEXTERNALæTHREAD 0æ æ æPITCH Sæ æ æPITCHæANGLE (æ æ æPEAKæTOæVALLEYæHEIGHTæOFæTHREADæPROFILE !Oæ æ æPOSITIVEæTOLERANCE !Uæ æ æNEGATIVEæTOLERANCE Form Taps -EDIUMæTHREADæFITæWITHæCLOSEæFLANKæCLEARANCEæ(HæORæ(EFITæBYæBASICæDEVIATIONææ OFæEXTERNALæTHREAD 4APPINGæSIZEæHOLEæDIAMETER 7ITHæ FLUTELESSæ TAPPINGæ THEæ TAPPINGæ SIZEæ HOLEæ DIAMETERæ IN LEADæTOæTOOLæBREAKAGEæ!æTOOæLARGEæTAPPINGæSIZEæHOLEæISæACCEP FLUENCESæTHEæDISTINCTIONæOFæTHEæFORMEDæTHREADææ!æTOOæSMALLæ TABLEæWITHæCERTAINæTOLERANCESæBECAUSEæFORMEDæTHREADSæHAVEæAæ TAPPINGæSIZEæHOLEæDIAMETERæRESULTSæINæANæOVERFORMINGæOFæTHEæ SUFFICIENTæLOADINGæCAPACITYæFROMæAæææBEARINGæDEPTH THREADæWHICHæMUSTæDEFINITELYæBEæPREVENTEDæBECAUSEæTHISæCANæ 4APPINGæSIZEæHOLEæDIAMETERæISæTOOæLARGE sæTHREADæNOTæFORMED sæLARGEæFORMæPOCKETæCLAW sæHEIGHTæOFæPROFILEæTOOæLOW /PTIMALæTAPPINGæSIZEæHOLEæDIAMETER sæTHREADæFULLYæFORMEDæ sæSMALLæFORMæPOCKETæCLAW sæOPTIMALæHEIGHTæOFæPROFILE 4APPINGæSIZEæHOLEæTOOæSMALL sæTHREADæOVERFORMED sæNOæFORMæPOCKETæCLAW sæPROFILEæTOOæHIGH #OOLINGæLUBRICANTSæWITHæFLUTELESSæTAPS 7ITHæFLUTELESSæTAPSæTHEæMAINæTASKæOFæTHEæCOOLANTæISæLUBRICA TIONæ4HEæBETTERæTHEæLUBRICATIONæWITHæTHEæMAXIMUMæCONCEN TRATIONæTHEæLONGERæTHEæTOOLæLIFE 4HEREæAREæTWOæDIFFERENTæTYPESæOFææLUBRICANT /ILæBASEDæLUBRICANTS 4HESEæAREæMINERALæOILSæWITHæTHEæBESTæLUBRICATINGæCHARACTERI STICSæ4HEYæREDUCEæFRICTIONæANDæACHIEVEæOPTIMALæLIFE Soluble lubricants 4HESEæ SOLUBLEæ LUBRICANTSæ AREæ Aæ CONCENTRATEæ THINNEDæ TOæ ANæ EMULSIONæ PRIORæ TOæ THEæ USEæ WITHæ WATERæ4HEæ CONCENTRATIONæ MUSTæ NOTæ BEæ BELOWæ æ!æ CONTENTæ MOREæ THANæ æ ISæ IDEALæ INæORDERæTOæACHIEVEæAæLONGæLIFEæTHANKSæTOæAæGOODæLUBRICATIONæ EFFECT 6 7 4OOLæLIFE &RICTION 8 9 10 12 20 50 100 #ONCENTRATIONæCONTENTæOFæTHEæCOOLINGæLUBRICANTæINæ 103 FORM TAPS sæ&LUTELESSæ4APS 0AGEæ 0AGEæ 0AGEæ 0AGEæ æææ5.# æææ5.& æææ-ETRICæ æææ-ETRICæFINE Note: Items marked as International Stock may become stocked in USA if sufficient volume is recognized. Recommended Tapping Speeds General Steels Material Hardness Stainless Steels SFM HRC Brinell Nitrided Material Hardness Hard coated HRC Brinell Cast Aluminum Silicon Content SFM Nitrided Hard coated Wrought Aluminum SFM % Bright finish Material Hardness Hard coated HRC Brinell SFM Bright finish Hard coated -- < 180 100 165 -- 180 50 65 <6 130 190 -- 30 - 80 165 190 < 20 < 230 80 130 < 23 240 50 65 6 - 10 80 130 -- 75 - 150 100 130 < 25 < 250 65 115 < 30 280 30 50 > 10 -- -- < 30 < 280 50 100 < 35 < 320 30 65 Thread Forming Taps ANSI length - ANSI shank UNC Series 3940 - Cobalt, UNC, form tap, TiN coated, Form C chamfer Series 3943 - Cobalt, UNC, form tap, TiCN coated, Form C chamfer 2BX Class of Fit Form Taps Through or Blind Hole Chamfer Lead C · 2-3 No. Lube Shank dia. 2BX Overall Length Square Size Approx. Series Series Order Size Grooves inch inch inch Limits 3940 3943 No. 4-40 4 0.141 0.110 1.882 H4/H5 5-40 4 0.141 0.110 1.941 H4/H5 6-32 4 0.141 0.110 2.000 H5/H6 8-32 4 0.168 0.131 2.130 H5/H6 10-24 4 0.194 0.152 2.382 H6/H7 12-24 4 0.220 0.165 2.382 H6/H7 1/4-20 4 0.255 0.191 2.500 H7/H8 5/16-18 5 0.318 0.238 2.720 H8/H9 l l l l l l l l l l l l l l l l l l l l l l l l l l 2.845 3/8-16 5 0.381 0.286 2.941 H8/H9 7/16-14 5 0.323 0.242 3.157 H9/H10 1/2-13 5 0.367 0.275 3.381 H10/H11 5/8-11 5 0.480 0.360 3.811 H11/H12 3/4-10 7 0.590 0.442 4.252 H12/H13 3.175 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 15.875 19.050 ANSI length - ANSI shank Series 3959 - Cobalt, UNC, straight flute, TiN coated, Form E chamfer No. Lube E · 1.5 - 2 106 Bright Shank dia. Square Size Overall Length 2BX Approx. Series Order Size Grooves inch inch inch Limits 3959 No. 4-40 4 0.141 0.110 1.882 H4/H5 6-32 4 0.141 0.110 2.000 H5/H6 8-32 4 0.168 0.131 2.130 H5/H6 l l l l l l l l l l 2.845 10-24 4 0.194 0.152 2.382 H6/H7 1/4-20 4 0.255 0.191 2.500 H7/H8 5/16-18 5 0.318 0.238 2.720 H8/H9 3/8-16 5 0.381 0.286 2.941 H8/H9 7/16-14 5 0.323 0.242 3.157 H9/H10 1/2-13 5 0.367 0.275 3.381 H10/H11 5/8-11 5 0.480 0.360 3.811 H11/H12 Steam Oxide TiN TiCN MolyGlide MolyGlide® TiAlN AlCrN 3.505 4.166 4.826 6.350 7.938 9.525 11.113 12.700 15.875 FIREX® Thread Forming Taps DIN length - DIN shank Series 1582 - Cobalt, UNC, form tap, TiN coated, DIN 371 Series 1583 - Cobalt, UNC, form tap, TiN coated, DIN 376 No. Lube Shank dia. Square Size Overall Length DIN 371 DIN 376 Approx. Series Series 1583 2BX Size Grooves mm mm mm Limits 1582 10-24 4 6.000 4.900 70.000 H6/H7 12-24 4 6.000 4.900 80.000 H6/H7 1/4-20 4 7.000 5.500 80.000 H7/H8 ° ° l l l ° 5/16-18 5 8.000 6.200 90.000 H8/H9 3/8-16 5 10.000 8.000 100.000 H8/H9 7/16-14 5 8.000 6.200 100.000 H9/H10 1/2-13 5 9.000 7.000 110.000 H10/H11 9/16-12 5 11.000 9.000 110.000 H10/H11 5/8-11 5 12.000 9.000 110.000 H11/H12 3/4-10 7 14.000 11.000 125.000 H12/H13 UNC / UNF Order No. 2BX Class of Fit 4.826 5.486 6.350 7.938 9.525 11.113 l ° ° ° 12.700 Through or Blind Hole 14.288 15.875 19.050 ANSI length - ANSI shank Series 3941 - Cobalt, UNF, form tap, TiN coated Series 3944 - Cobalt, UNF, form tap, TiCN coated C · 2-3 No. Lube Shank dia. Square Size Overall Length 2BX Approx. Series Series Order Size Grooves inch inch inch Limits 3941 3944 No. 4-48 4 0.141 0.110 1.882 H4/H5 5-44 4 0.141 0.110 1.941 H4/H5 6-40 4 0.141 0.110 2.000 H5/H6 8-36 4 0.168 0.131 2.130 H4/H5 10-32 4 0.194 0.152 2.382 H5/H6 12-28 4 0.220 0.165 2.382 H6/H7 1/4-28 4 0.255 0.191 2.500 H6/H7 5/16-24 5 0.318 0.238 2.720 H7/H8 l l l l l l l l l l l l l l l l l l l l l l l l l l 2.845 3/8-24 5 0.381 0.286 2.941 H7/H8 7/16-20 5 0.323 0.242 3.157 H8/H9 1/2-20 5 0.367 0.275 3.381 H8/H9 5/8-18 5 0.480 0.360 3.811 H9/H10 3/4-16 7 0.590 0.442 4.252 H10/H11 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 3.175 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 15.875 19.050 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 107 Form Taps Chamfer Lead Thread Forming Taps ANSI length - ANSI shank UNF 2BX Class of Fit Through or Blind Hole Series 3972 - Cobalt, UNF, form tap, TiN coated, Form E chamfer No. Lube Shank dia. Square Size Overall Length 2BX Approx. Series Order Size Grooves inch inch inch Limits 3972 No. 10-32 4 0.194 0.152 2.382 H5/H6 1/4-28 4 0.255 0.191 2.500 H6/H7 5/16-24 5 0.318 0.238 2.720 H7/H8 l l l l l l l 4.826 3/8-24 5 0.381 0.286 2.941 H7/H8 7/16-20 5 0.323 0.242 3.157 H8/H9 1/2-20 5 0.367 0.275 3.381 H8/H9 5/8-18 5 0.480 0.360 3.811 H9/H10 6.350 7.938 9.525 11.113 12.700 15.875 DIN length - DIN shank Form Taps Series 1584 - Cobalt, UNF, form tap, TiN coated, DIN 371, Form C chamfer Chamfer Lead No. Lube E · 1.5 - 2 Shank dia. Square Size Overall Length 2BX DIN 371 Approx. Series Order Size Grooves mm mm mm Limits 1584 No. 10-32 4 6.000 4.900 70.000 H5/H6 ° ° ° ° l 4.826 12-28 4 6.000 4.900 80.000 H6/H7 1/4-28 4 7.000 5.500 80.000 H6/H7 5/16-24 5 8.000 6.200 90.000 H7/H8 3/8-24 5 10.000 8.000 100.000 H7/H8 5.486 6.350 7.938 9.525 C · 2-3 DIN length - DIN shank Series 1585 - Cobalt, UNF, form tap, TiN coated, DIN 376, Form C chamfer No. Lube 108 Bright Shank dia. Square Size Overall Length 2BX DIN 376 Approx. Series Order Size Grooves mm mm mm Limits 1585 No. 7/16-20 5 8.000 6.200 100.000 H8/H9 1/2-20 5 9.000 7.000 100.000 H8/H9 9/16-18 5 11.000 9.000 100.000 H8/H9 5/8-18 5 12.000 9.000 100.000 H9/H10 3/4-16 7 14.000 11.000 110.000 H10/H11 l l ° ° ° 11.113 Steam Oxide TiN TiCN MolyGlide MolyGlide® TiAlN AlCrN 12.700 14.288 15.875 19.050 FIREX® Thread Forming Taps ANSI length - ANSI shank Series 3939 - Cobalt, Metric, form tap, TiN coated Series 3942 - Cobalt, Metric, form tap, TiCN coated METRIC 6HX No. Lube Shank dia. Square Size Overall Length Size Grooves inch inch inch Limits 3939 3942 M3 X 0.50 4 0.141 0.110 1.941 D5/D6 M4 X 0.70 4 0.168 0.131 2.130 D6/D7 M5 X 0.80 4 0.194 0.152 2.382 D7/D8 M6 X 1.00 4 0.255 0.191 2.500 D8/D9 M8 X 1.25 5 0.318 0.238 2.720 D9/D10 M10 X 1.50 5 0.381 0.286 2.941 D10/D11 M12 X 1.75 5 0.367 0.275 3.381 D11/D12 M14 X 2.00 5 0.429 0.322 3.591 D13/D14 M16 X 2.00 5 0.480 0.360 3.811 D13/D14 l l l l l l l l l l l l l l l l l Approx. Series Series Order No. 6HX Class of Fit 3.000 4.000 5.000 6.000 8.000 10.000 Through or Blind Hole 12.000 14.000 16.000 NEW! ANSI length - ANSI shank C · 2-3 Series 3979 - Cobalt, Metric, form tap, TiN coated, Form E chamfer 6HX No. Lube Shank dia. Square Size Overall Length Size Grooves inch inch inch Limits 3979 No. M3 X 0.50 3 0.141 0.110 1.941 D5/D6 3.000 M4 X 0.70 3 0.168 0.131 2.130 D6/D7 M5 X 0.80 3 0.194 0.152 2.382 D7/D8 M6 X 1.00 3 0.255 0.191 2.500 D8/D9 M8 X 1.25 3 0.318 0.238 2.720 D9/D10 M10 X 1.50 3 0.381 0.286 2.941 D10/D11 M12 X 1.75 3 0.367 0.275 3.381 D11/D12 l l l l l l l ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS Approx. Series Order E · 1.5 - 2 4.000 5.000 6.000 8.000 10.000 12.000 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 109 Form Taps Chamfer Lead Thread Forming Taps DIN length - DIN shank METRIC Series 919 - Cobalt, Metric, form tap, TiN coated, DIN 371, form C chamfer Series 1717 - PM cobalt, Metric, form tap, AlCrN, DIN 371, radial coolant, form C chamfer 6HX Class of Fit Through or Blind Hole No. Lube Shank dia. Square Size DIN 371 DIN 371 Approx. Series Series 1717 6HX Overall Length Size Grooves mm mm mm Limits 919 M3 X 0.50 4 3.500 2.700 56.000 D5/D6 l ° l l l l l M3.5 X 0.60 4 4.000 3.000 56.000 D6/D7 M4 X 0.70 4 4.500 3.400 63.000 D6/D7 M5 X 0.80 4 6.000 4.900 70.000 D7/D8 M6 X 1.00 4 6.000 4.900 80.000 D8/D9 M8 X 1.25 5 8.000 6.200 90.000 D9/D10 M10 X 1.50 5 10.000 8.000 100.000 D10/D11 Order No. 3.000 3.500 4.000 ° l l l 5.000 6.000 8.000 10.000 DIN length - DIN shank Form Taps Series 323 - PM cobalt, Metric, form tap, TiN coated, DIN 371, radial coolant, form C chamfer Chamfer Lead No. Lube C · 2-3 Shank dia. Square Size DIN 371 6HX Overall Length Approx. Series Order Size Grooves mm mm mm Limits 323 No. M5 X 0.80 4 6.000 4.900 70.000 D7/D8 5.000 M6 X 1.00 4 6.000 4.900 80.000 D8/D9 M8 X 1.25 5 8.000 6.200 90.000 D9/D10 M10 X 1.50 5 10.000 8.000 100.000 D10/D11 ° l l ° 6.000 8.000 10.000 E · 1.5 - 2 DIN length - DIN shank Series 1972 - Carbide, Metric, form tap, **TiCN coated DIN 371, radial coolant, form C chamfer Series 1927 - Carbide, Metric, form tap, **TiCN coated, DIN 371, radial coolant, Form E chamfer DIN 371 DIN 371 Approx. Series Series Order 6HX No. Lube Shank dia. Square Size Overall Length Size Grooves inch inch inch Limits 1972 1927 No. *M3 X 0.50 4 3.500 2.700 56.000 D5/D6 4 4.500 3.400 63.000 D6/D7 M5 X 0.80 4 6.000 4.900 70.000 D7/D8 M6 X 1.00 4 6.000 4.900 80.000 D8/D9 M8 X 1.25 5 8.000 6.200 90.000 D9/D10 M10 X 1.50 5 10.000 8.000 100.000 D10/D11 ° ° ° l l l l l ° l l l 3.000 *M4 X 0.70 4.000 5.000 6.000 8.000 10.000 * Sizes <M5 do not have coolant ducts through the tap **All carbide form taps will be changing to TiCN coating as inventory levels are replenished. 110 Bright Steam Oxide TiN TiCN MolyGlide MolyGlide® TiAlN AlCrN FIREX® Thread Forming Taps DIN length - DIN shank Series 342 - PM cobalt, Metric,form tap, TiN coated, DIN 376, radial coolant Series 1719 - PM cobalt, Metric, form tap, AlCrN, DIN 376, radial coolant DIN 376 DIN 376 Approx. Series Series Order Limits 342 1719 No. ° l ° 6HX No. Lube Shank dia. Square Size Overall Length Size Grooves mm mm mm M12 X 1.75 5 9.000 7.000 110.000 D11/D12 M14 X 2.00 5 11.000 9.000 110.000 D13/D14 M16 X 2.00 5 12.000 9.000 110.000 D13/D14 M12 X 1.75 5 9.000 7.000 110.000 D11/D12 M14 X 2.00 5 11.000 9.000 110.000 D13/D14 M16 X 2.00 5 12.000 9.000 110.000 D13/D14 M20 X 2.50 7 16.000 12.000 140.000 D14/D15 METRIC / METRIC FINE 12.000 14.000 16.000 ° ° ° ° 6HX Class of Fit 12.000 14.000 16.000 20.000 Through or Blind Hole DIN length - DIN shank Form Taps Series 1931 - Carbide, Metric, form tap, **TiCN coated, DIN 376, radial coolant Size No. Lube Shank dia. Square Size Overall Length Grooves mm mm mm 6HX DIN 376 Approx. Series Order Limits 1931 No. ° ° ° ° ° 12.000 Approx. Series Order M12 X 1.75 5 9.000 7.000 110.000 D11/D12 M14 X 2.00 5 11.000 9.000 110.000 D13/D14 M16 X 2.00 5 12.000 9.000 110.000 D13/D14 M18 X 2.50 6 14.000 11.000 125.000 D14/D15 M20 X 2.50 7 16.000 12.000 140.000 D14/D15 Chamfer Lead 14.000 16.000 C · 2-3 18.000 20.000 ** All carbide form taps will be changing to TiCN coating as inventory levels are replenished. NEW! ANSI length - ANSI shank Series 3975 - Cobalt, Metric Fine, form tap, TiN coated 6HX No. Lube Shank dia. Square Size OAL Size Grooves inch inch inch Limits 3975 No. M8 X 1.00 5 0.318 0.238 2.720 D7/D8 M10 X 1.00 5 0.381 0.286 2.941 D7/D8 M10 X 1.25 5 0.381 0.286 2.941 D7/D8 M12 X 1.00 5 0.367 0.275 3.381 D7/D8 M12 X 1.25 5 0.367 0.275 3.381 D7/D8 M12 X 1.50 5 0.367 0.275 3.381 D8/D9 M14 X 1.25 5 0.429 0.322 3.591 D9/D10 M14 X 1.50 5 0.429 0.322 3.591 D10/D11 M16 X 1.50 5 0.480 0.360 3.811 D10/D11 l l l l l l l l l 8.005 ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 10.005 10.006 12.005 12.006 12.007 14.006 14.007 16.007 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 111 Thread Forming Taps DIN length - DIN shank METRIC FINE 6HX Class of Fit Form Taps Through or Blind Hole Chamfer Lead Series 927 - Cobalt, Metric Fine, form tap, TiN coated, DIN 374 No. Lube Shank dia. Square Size Overall Length Grooves mm mm mm Size DIN 374 6HX Approx. Series Order Limits 927 No. ° ° l ° l ° ° l ° l ° ° ° ° ° ° 6.004 M6 X 0.75 4 4.500 3.400 80.000 D6/D7 M8 X 0.75 5 6.000 4.900 80.000 D7/D8 M8 X 1.00 5 6.000 4.900 90.000 D7/D8 M10 X 1.00 5 7.000 5.500 90.000 D7/D8 M10 X 1.25 5 7.000 5.500 100.000 D7/D8 M12 X 1.00 5 9.000 7.000 100.000 D7/D8 M12 X 1.25 5 9.000 7.000 100.000 D7/D8 M12 X 1.50 5 9.000 7.000 100.000 D8/D9 M14 X 1.00 5 11.000 9.000 100.000 D8/D9 M14 X 1.50 5 11.000 9.000 100.000 D10/D11 M16 X 1.00 5 12.000 9.000 100.000 D10/D11 M16 X 1.50 5 12.000 9.000 100.000 D10/D11 M18 X 1.00 7 14.000 11.000 110.000 D10/D11 M18 X 1.50 7 14.000 11.000 110.000 D10/D11 M20 X 1.00 7 16.000 12.000 125.000 D11/D12 M20 X 1.50 7 16.000 12.000 125.000 D11/D12 8.004 8.005 10.005 10.006 12.005 12.006 12.007 14.005 14.007 16.005 16.007 18.005 18.007 20.005 20.007 C · 2-3 DIN length - DIN shank Series 338 - PM cobalt, Metric Fine, form tap, TiN coated, DIN 374, radial coolant Series 1723 - PM cobalt, Metric Fine, form tap, AlCrN, DIN 374, radial coolant No. Lube 112 Bright Shank dia. Square Size DIN 374 DIN 374 Approx. Series Series 1723 6HX Overall Length Size Grooves mm mm mm Limits 338 M8 X 1.00 5 6.000 4.900 90.000 D7/D8 ° ° ° M10 X 1.00 5 7.000 5.500 90.000 D7/D8 M12 X 1.00 5 9.000 7.000 100.000 D7/D8 M12 X 1.25 5 9.000 7.000 100.000 D7/D8 M12 X 1.50 5 9.000 7.000 100.000 D8/D9 M14 X 1.50 5 11.000 9.000 100.000 D10/D11 M16 X 1.50 5 12.000 9.000 100.000 D10/D11 M18 X 1.50 7 14.000 11.000 110.000 D10/D11 M20 X 1.50 7 16.000 12.000 125.000 D11/D12 M24 X 1.50 7 18.000 14.500 140.000 D11/D12 Steam Oxide TiN TiCN MolyGlide MolyGlide® ° l l TiAlN Order No. 8.005 10.005 ° l ° ° l ° ° ° AlCrN 12.005 12.006 12.007 14.007 16.007 18.007 20.007 24.007 FIREX® Thread Forming Taps DIN length - DIN shank Series 1721 - PM cobalt, Metric Fine, form tap, AlCrN, DIN 371, radial coolant 6HX DIN 371 No. Lube Shank dia. Square Size Overall Length Size Grooves mm mm mm Limits 1721 No. ° ° l 10.005 Approx. Series Order M8 X 1.00 5 8.000 6.200 90.000 D7/D8 M10 X 1.00 5 10.000 8.000 90.000 D7/D8 M10 X 1.25 5 10.000 8.000 100.000 D7/D8 8.005 METRIC FINE 6HX Class of Fit 10.006 Through or Blind Hole DIN length - DIN shank Series 1581 - Carbide, Metric Fine, form tap, **TiCN coated, DIN 374, radial coolant No. Lube Shank dia. Square Size Overall Length 6HX DIN 374 Approx. Series Order Grooves mm mm mm Limits 1581 No. 5 9.000 7.000 100.000 D7/D8 12.005 M12 X 1.50 5 9.000 7.000 100.000 D8/D9 M14 X 1.00 5 11.000 9.000 100.000 D8/D9 M14 X 1.25 5 11.000 9.000 100.000 D9/D10 M14 X 1.50 5 11.000 9.000 100.000 D10/D11 M16 X 1.50 5 12.000 9.000 100.000 D10/D11 M18 X 1.50 7 14.000 11.000 110.000 D10/D11 M20 X 1.50 7 16.000 12.000 125.000 D11/D12 M24 X 1.50 7 18.000 14.500 140.000 D11/D12 ° l ° ° ° ° ° ° ° Chamfer Lead 12.007 14.005 14.006 14.007 C · 2-3 16.007 18.007 20.007 24.007 ** All carbide form taps will be changing to TiCN coating as inventory levels are replenished. ● 53!æ3TOCK ❍ )NTERNATIONALæ3TOCKææWKS 7HENæORDERINGæ%$0æNOææ3ERIESææ/RDERæNOæIEæææ 113 Form Taps Size M12 X 1.00 114 General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys Titanium or Nickel 4ECHNICALæ)NFORMATION General Purpose Alloyed & Unalloyed Steels Stainless Steels High Tensile, Tool Steels Cast Iron Aluminum and Alloys Titanium or Nickel 115 Definitions and angles, centers and flute forms CHAMFERæLEADæ LENGTH æ SHANKæDIA LENGTHæOFæDRIVINGæ SQUARE DRIVINGæ SQUARE THREADæ DIA THREADæ LENGTH FLUTEææ LENGTH OVERALLæLENGTH INCLUDEDæANGLEæ OFæTHREAD Dæ GF!æ Aæ Gæ TRYæSQUARE SPIRALæPOINTæANGLE CLEARANCEæANGLE RAKEæANGLE LAND WIDTHæOFææ LAND CHAMFERæ fA DIA WIDTHæOFæ FLUTE FLUTE CHAMFER WEBæDIA THREADææ PITCH Flute forms STRAIGHTæFLUTEDæFORMæ#æ WITHOUTæSPIRALæPOINT HELIXæANGLEæ STRAIGHTæFLUTEDæFORMæ"æ WITHæSPIRALæPOINT HELIXæANGLEæ Technical 4YPESæOFæCENTERSæSTANDARDæTOæ$).æ$).æææ Note: DIN standard taps > 10.0mm diameter are manufactured with male centers 4 SOLIDæCONE SOLIDæCONE 1 STEPPEDæCONE 2 ONæCUTTINGæ SECTION ONæ SHANK 5 CHAMFER INTERNALæCENTERæ FORMæ!æORæ2æTOæ$).ææ 3 ACCæTOæMANUFACTæSPECIFICATION æ 4HREADæDIAæRANGEæ MM éæ ææxæ ææxæ æ INTERNALæCENTERæ 6 FORMæ!æORæ2æTOæ$).ææ ACCæTOæMANUFACTæSPECIFICATION #ENTERæONæCUTTINGæSECTION WITHæCHAMFERæFORMSææ !æ#æ$æ% WITHæCHAMFERæFORMæ " #ENTERæONæSHANKæ ➀ ➀➁ ➀➁➂ ➂ ➀ ➀ ➀➁➂ ➂ ➃➄➅ ➃➄➅ ➃➄➅ ➅ Coolant duct geometries AXIALæCOOLANTææ DELIVERYæ WITHæAXIALæCOOLANTææ DUCTæEXIT 116 AXIALæCOOLANTææ DELIVERYæWITHæRADIALææ COOLANTæDUCTæEXITæINæTHEæFLUTESææ ATæTHEæCHAMFER Chamfer forms, selection and application !PPLICATIONæRECOMMENDATIONS 7HILEæINæTHEæFIRSTæINSTANCEæTHEæTYPEæOFæTAPPEDæHOLEæREQUIREDæ DETERMINESæ THEæ CHAMFERæ GENERALLYæ THEæ TAPæ GEOMETRYæ æ IEæ FORMæ NUMBERæ ANDæ DIRECTIONæ OFæ FLUTESæ CUTTINGæ ANGLEæ ETCæ æ DEPENDæ ONæ THEæ MATERIALæ TOæ BEæ MACHINEDæ ANDæ ONæ THEæ APPLICATIONæ"ASICALLYæTAPSæUPæTOæ-æFORæTAPPINGæ)3/æMETRICæ THREADSæ ORæ FORæ THEæ ENGINEERINGæ INDUSTRYæ INæ GENERALæ HAVEæ æ FLUTESæANDæABOVEæTHISæSIZEææORæMOREæFLUTES æ 4APSæWITHæLEFTHANDæFLUTESæANDæTAPSæWITHæSPIRALæPOINTSæREMOVEæ THEæCHIPSæINæTHEæCUTTINGæDIRECTIONæORæDIRECTIONæOFæFEEDæANDæAREæ THEREFOREæESPECIALLYæSUITABLEæFORæTAPPINGæTHROUGHæHOLESæ4APSæ WITHæSTRAIGHTæFLUTESæANDæLONGæCHAMFERæLEADæFORMæ$æALSOæGIVEæ GOODæRESULTS æ !Sæ FARæ ASæ BLINDæ HOLESæ AREæ CONCERNEDæ WEæ RECOMMENDæ TAPSæ WITHæ RIGHTHANDæ SPIRALæ FLUTESæ ORæ STRAIGHTæ FLUTEDæ TAPSæ WITHæ Aæ SHORTæCHAMFERæLEADæLENGTHæ4OOLSæWITHæRIGHTHANDæSPIRALæFLUTESæ HAVEæ THEæ CHIPæ FLOWæ INæ THEæ BACKWARDæ DIRECTIONæ IEæ UPæ THEæ FLUTESæ4HEæCHAMFERæLEADæLENGTHæISæDESIGNEDæINæSUCHæAæWAYæSOæ THATæDURINGæTHEæRETURNæMOVEMENTæCHIPSæDOæNOTæJAMæANDæAREæ RELIABLYæSHEAREDæOFF æ 4HEæTAPPINGæOFæALUMINIUMæGREYæCASTæIRONæANDæBRASSæREQUIRESæ TAPSæWITHæAæSHORTæCHAMFERæLEADæLENGTHæREGARDLESSæOFæWHETHERæ THROUGHæ ORæ BLINDæ HOLESæ AREæ REQUIREDæ )Næ THESEæ MATERIALSæ Aæ LONGæCHAMFERæLEADæLENGTHæWOULDæACTæASæAæCOREæDRILLæWITHæCHIPæ BREAKERæGROOVESæANDæWOULDæONLYæDRILLæTHEæTAPPINGæSIZEæHOLEæ TOæTHEæMAJORæDIAMETERæINSTEADæOFæCUTTINGæAæTHREAD æ 3TRAIGHTæFLUTEDæTAPSæWITHOUTæSPIRALæPOINTæAREæGENERALæPURPOSEæ TOOLSæANDæHAVEæTHEæDISADVANTAGEæOFæNOTæSHOWINGæOPTIMUMæ RESULTSæ INæ PARTICULARæ MATERIALSæ )TSæ WELLæ WORTHæ THEæ EFFORTæ TOæ TAKEæ THEæ TROUBLEæ OFæ ASCERTAININGæ THEæ MOSTæ SUITABLEæ TOOLæ FORæ ANYæGIVENæMETALCUTTINGæTASK #HAMFERæFORMSæTOæ$).æ &ORMæ! 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Metric Taps -ETRICæTHREADSæHAVEæTHEIRæOWNæCLASSIFICATIONSæFORæCLASSæOFæFITæ ANDæTHEæTHREADæLIMITSæWITHINæTHEMæ7HENæDISCUSSINGæ5.# 5.&æTHREADSæWEæWORKEDæWITHæ"æ"æANDæ"æ#LASSESæOFæFITæ ANDæHADæh(væLIMITSæWHICHæHELPEDæDEFINEæTHEæACCURACYæWITHINæ EACHæCLASSæ4OæHELPæUNDERSTANDæ-ETRICæTOLERANCINGæITæMAYæBEæ EASIESTæTOæLOOKæATæTHEæSIMILARITIESæBETWEENæBOTHæ-ETRICæANDæ &RACTIONALæTOLERANCINGææ sæ!æMETRICæ(æCLASSæOFæFITæISæQUITEæSIMILARæTOæTHEæFRACTIONALæ"æ CLASSæOFæFITæææASæISæTHEæMETRICæ(æTOæTHEæFRACTIONALæ"æ7EæWILLæ FOCUSæONæTHEæ(æCLASSæOFæFITæASæTHISæISæOURæSTANDARDæOFFERINGæ INæMETRICæSIZESæ0LEASEæNOTEæTHATæSPECIALæCLASSESæOFæFITæCANæBEæ PRODUCEDæFORæANYæGIVENæAPPLICATIONæUPONæREQUEST æ sæ!GAINænæTHEæCLASSæOFæFITæWILLæGIVEæYOUæMINIMUMæANDæMAXI MUMæPITCHæDIAMETERæLIMITSæTHATæNEEDæTOæBEæMAINTAINEDæ DURINGæMANUFACTURINGæ7ITHINæTHEæCLASSæOFæFITænæMETRICæTHREADæ LIMITSæAREæFURTHERæBROKENæDOWNæINTOæh$væLIMITSæ%ACHæh$væ LIMITæEQUALSæMMæMMæævænæEXTREMELYæ 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THREADæ4HEæ FITæ HASæ TOæ BEæ SELECTEDæ INæ CONJUNCTIONæ WITHæ THEæ APPROPRIATEæTHREADæCONNECTION 4HEæTOLERANCEæZONESæOFæTHEæTOLERANCEæCLASSESæFINEæMEDIUMæ ANDæCOARSEæAREæALLOCATEDæTOæTHREEæSCREWINæLENGTHSæSHORTæ3æ NORMALæ.æANDæLONGæ,æ'ENERALLYæTHEæFOLLOWINGæRULESæAPPLYæ FORæSELECTINGæAæTOLERANCEæCLASS &INEæTOLERANCEæZONEæ3 &ORæPRECISIONæTHREADSæWHENæONLYæAæSMALLæVARIATIONæINæTHEæFITæ ISæPERMITTED -EDIUMæTOLERANCEæZONEæ. 'ENERALæAPPLICATION 3CREWINæLENGTHS 4HEæ QUALITYæ OFæ THREADæ CONNECTIONæ ISæ ALSOæ AFFECTEDæ BYæ THEæ SCREWINæ LENGTHæ4HEæ )3/æ TOLERANCEæ SYSTEMæ WASæ ESPECIALLYæ ASæ REGARDSæ THEæ PITCHæ DIAMETERæ DIVIDEDæ INTOæ THREEæ GROUPSæ IE 3æ 3HORTæ .æ .ORMALæ ,æ ,ONGæ æSHORTæSCREWINæLENGTHæ æNORMALæSCREWINæLENGTHæ æLONGæSCREWINæLENGTH 4HEæ FOLLOWINGæ FITæ SHOULDæ BEæ SELECTEDæ FORæ NORMALæ SCREWINæ LENGTHæ. 4Oæ ENSUREæ Aæ TIGHTERæ FITæ OFæ THREADæ CONNECTIONSæ WEæ RECOM MENDæ FORæ SHORTæ SCREWINæ LENGTHSæ Aæ NARROWERæ FITæ!Sæ FARæ ASæ LONGæSCREWINæLENGTHSæAREæCONCERNEDæFITSæWITHæAæLARGERæTOLE RANCEæMUSTæBEæUSEDæTOæCOMPENSATEæFORæPITCHæDEVIATIONS Technical #OARSEæTOLERANCEæZONEæ, 4HEREæ AREæ NOæ SPECIALæ PRECISIONæ REQUIREMENTSæ ANDæ INæ CASESæ WHEREæ PRODUCTIONæ DIFFICULTIESæ MAYæ OCCURæ EGæ THREADæ PRO DUCTIONæINæHOTROLLEDæRODSæDEEPæBLINDæHOLESæORæPLASTICæCOM PONENTS 4HREADæFITSæWITHæDIFFERENTæFLANKæCLEARANCE DIAMETERæ$æ OFæ INTERNALæTHREAD DIAMETERæDæ OFæ EXTERNALæTHREAD DIAMETERæ$æ OFæ INTERNALæTHREAD INTERNALæ THREAD INTERNALæ THREAD EXTERNALæ THREAD EXTERNALæ THREAD :EROæPROFILEæOFæTHREADæFITæWITHOUTæFLANKæCLEARANCEæ(HFIT DIAMETERæ$æ OFæ INTERNALæTHREAD 4HREADæFITæWITHæWIDEæFLANKæCLEARANCEæ'GFITæORæ'EFITæINæEXTERNALæ ANDæINTERNALæTHREAD DIAMETERæDæ OFæ EXTERNALæTHREAD INTERNALæ THREAD EXTERNALæ THREAD 4HREADæFITæWITHæNARROWæFLANKæ(GæORæ(EFITæBYæBASICæDEVIATIONæOFæ EXTERNALæTHREAD 120 DIAMETERæDæ OFæ EXTERNALæTHREAD %XPLANATIONæOFæSYMBOLS $æ $æ $æ Dæ Dæ Dæ 0æ Aæ (æ !Oæ !Uæ æ æ æ æ æ æ æ æ æ æ æ æNOMæOFæINTERNALæTHREAD 4APPINGæSIZEæHOLEææOFæINTERNALæTHREADæ "ASICæPITCHææOFæINTERNALæTHREAD æNOMæOFæEXTERNALæTHREAD "ASICæPITCHææOFæEXTERNALæTHREAD 4APPINGæSIZEæHOLEææOFæEXTERNALæTHREAD 0ITCH )NCLUDEDæANGLEæOFæTHREAD (EIGHTæOFæPEAKæTOæPEAKæTHREADæPROFILE 5PPERæTOLERANCEæLIMITæ ,OWERæTOLERANCEæLIMITæ Cutting rate recommendations for taps 0OUNDSINCH -ATERIALæGROUP (ARDNESS (" Cutting speed SFM HSS-E HSS-E-PM Solid carbide Structural steels 123,250 n 33 - 49 49 - 66 98 - 164 Free-cutting steels 145,000 n 33 - 66 49 - 82 98 - 164 Unalloyed case hardened steels 108,750 n 33 - 49 49 - 66 98 - 164 Unalloyed heat-treatable steels 123,250 n 33 - 49 49 - 66 98 - 164 Alloyed case hardened steels 123,250 - 174,000 n 26 - 39 33 - 49 82 - 131 Alloyed heat-treatable steels 123,250 - 174,000 n 26 - 39 33 - 49 82 - 131 145,000 n 20 - 33 26 - 39 82 - 131 Alloyed tool steels High speed tool steels 95,275 - 145,000 n 20 - 33 26 - 39 82 - 131 3TAINLESSæANDæACIDRESISTANTæSTEELSæSULPHURED 123,250 n 20 - 39 26 - 49 98 - 164 æ AUSTENITIC 123,250 n 20 - 39 26 - 49 98 - 164 æ MARTENSITIC 123,250 n 20 - 39 26 - 49 98 - 164 Structural steels 116,000 n 33 - 49 49 - 66 98 - 164 Free-cutting steels 145,000 n 33 - 66 49 - 82 98 - 164 Case hardened steels 145,000 n 33 - 49 49 - 66 98 - 164 Heat-treatable steels 174,000 n 33 - 49 49 - 66 98 - 164 Nitriding steels 174,000 n 33 - 49 49 - 66 98 - 164 98 - 164 Spheroidal graphite iron !LUMINIUMæANDæ!LALLOYS 58,000 éæ 33 - 66 49 - 82 n 49 - 66 66 - 82 98 - 164 !LæWROUGHTæALLOYS 58,000 n 49 - 66 66 - 82 98 - 164 !LæCASTæALLOYSæéæææ3I 87,000 n 49 - 66 66 - 82 98 - 164 æ 87,000 n 49 - 66 66 - 82 82 - 131 æææ3I éæ 49 - 66 66 - 82 98 - 131 Spheroidal graphite iron éæ 49 - 66 66 - 82 98 - 131 Malleable cast iron æ 49 - 66 66 - 82 98 - 131 "RASSæSHORTCHIPPING 87,000 n 33 - 49 49 - 66 82 - 98 æ 87,000 n 33 - 49 49 - 66 82 - 98 n 16 - 33 23 - 39 33 - 66 LONGCHIPPING Plastics Magnesium-alloys 65,250 n 98 - 164 -- 131 - 197 Titanium and Ti-alloys 174,000 n -- 7 - 26 - Ni-alloys 174,000 n -- 7 - 26 - Technical Cast iron æ7ITHæCOATEDæTOOLSæCUTTINGæSPEEDæMAYæBEæINCREASEDæBYæUPæTOæ !PPLICATIONæALTERNATIVES )FæTHEæOPTIMALæTAPæFORæYOURæAPPLICATIONæISæNOTæAVAILABLEæPER HAPSæ YOUæ CANæ USEæ Aæ TAPæ WITHæ ANOTHERæ COLORæ RINGæ4HEæ TABLEæ BELOWæGIVESæYOUæAæVIEWæTOæPOSSIBLEæALTERNATIVESæ 7EæRECOMMENDæAæMACHININGæTESTæWITHæTHEæSELECTEDæALTERNA TIVEæTOOLæ#UTTINGæSPEEDæTOOLæLIFEæANDæMACHININGæQUALITYæMAYæ NOTæFITæTHEæPERFORMANCEæOFæTHEæOPTIMALLYæSUITEDæTOOL POSSIBLYæCANæBEæREPLACEDæBYæTOOLSæWITHæCOLOURæRINGæx n n n n n n n n n n Tools with color ring … æOPTIMALLYæSUITEDæ n n n n n n n æLIMITEDæSUITEDæ næNOTæSUITED 121 Cutting Rate recommendations for fluteless taps 4HANKSæTOæTHEæDEVELOPMENTæOFæMODERNæTOOLæMATERIALSæGEO METRIESæCOATINGSæANDæRECENTLYæTHEæ'UHRINGæDEVELOPEDæIM PROVEDæ TOOLæ SURFACEæ THEæ SCOPEæ OFæ MALLEABLEæ MATERIALSæ ABLEæ TOæBEæFLUTELESSæTAPPEDæISæEXPANDINGææ4HEæTABLEæh#UTTINGæRATEæ RECOMMENDATIONSvæBELOWæPROVIDESæANæOVERVIEWæOFæMATERI ALSæTHATæCANæBEæMACHINEDæWITHæ'UHRINGSæh0ROFILEvæFLUTELESSæ TAPSæ)NæMANYæCASESæAæTESTæINæHARDERæORæMOREæBRITTLEæMATERI ALSæISæWORTHæWHILEæINæORDERæTOæBENEFITæFROMæTHEæADVANTAGESæ OFæ FLUTELESSæ TAPPINGæ INæ THESEæ MATERIALSæ 0LEASEæ CONTACTæ OURæ TECHNICALæSPECIALISTSæFORæADVICE Cutting rate recommendations -ATERIALæGROUP 0OUNDSææINCH (33%0- 3OLIDæCARBIDE 123,250 n ææ ææ ææ &REECUTTINGæSTEELS 145,000 n ææ ææ ææ 5NALLOYEDæCASEæHARDENEDæSTEELS 108,750 n ææ ææ ææ 123,250 n ææ ææ ææ !LLOYEDæCASEæHARDENEDæSTEELS 123,250 - 174,000 n ææ ææ ææ !LLOYEDæHEATTREATABLEæSTEELS 123,250 - 174,000 n ææ ææ ææ 145,000 n ææ ææ ææ !LLOYEDæTOOLæSTEELS (IGHæSPEEDæTOOLæSTEELS Technical #UTTINGæSPEEDæ3&(33% 3TRUCTURALæSTEELS 5NALLOYEDæHEATTREATABLEæSTEELS 95,275 - 145,000 n ææ ææ ææ 3TAINLESSæANDæACIDRESISTANTæSTEELSæSULPHURED 123,250 n ææ ææ ææ æ AUSTENITIC 123,250 n ææ ææ ææ æ MARTENSITIC 123,250 n ææ ææ ææ 3TRUCTURALæSTEELS 116,000 n ææ ææ ææ &REECUTTINGæSTEELS 145,000 n ææ ææ ææ #ASEæHARDENEDæSTEELS 145,000 n ææ ææ ææ (EATTREATABLEæSTEELS 174,000 n ææ ææ ææ .ITRIDINGæSTEELS 174,000 n ææ ææ ææ 3PHEROIDALæGRAPHITEæIRON éæ ææ ææ ææ !LUMINIUMæANDæ!LALLOYS 58,000 n ææ ææ ææ !LæWROUGHTæALLOYS 58,000 n ææ ææ ææ !LæCASTæALLOYSæéæææ3I 87,000 n ææ ææ ææ æ 87,000 æææ3I n n n n #ASTæIRON éæ n n n 3PHEROIDALæGRAPHITEæIRON éæ ææ ææ ææ æ ææ ææ ææ n ææ ææ ææ n ææ ææ ææ n n n n -ALLEABLEæCASTæIRON "RASSæSHORTCHIPPING 87,000 æ 87,000 LONGCHIPPING 0LASTICS 122 (ARDNESSæ (" -AGNESIUMALLOYS 65,250 n n n n 4ITANIUMæANDæ4IALLOYS 174,000 n ææ ææ ææ .IALLOYS 174,000 n ææ ææ ææ #UTTINGæ3PEEDSæ#ONVERSIONæFORææ4APS Surface Feet per Minute Tap Sizes 5' 10' 15' 20' 25' 30' 40' 50' 60' 70' 80' 90' 100' 110' 120' 130' 140' 150' Revolutions per Minute UNC/UNF Taps No. 2 212 424 637 888 1110 1333 1777 2221 2665 3109 3554 3999 4442 4886 5330 5774 6218 6662 No. 3 191 382 573 772 964 1157 1543 1929 2315 2701 3086 3472 3858 4244 4629 5015 5401 5787 No. 4 174 347 521 682 853 1023 1364 1705 2046 2387 2728 3069 3411 3751 4092 4434 4775 5116 No. 5 147 294 441 611 764 917 1222 1528 1833 2139 2445 2750 3056 3361 3667 3973 4278 4584 No. 6 136 273 409 553 691 829 1106 1382 1659 1935 2212 2488 2766 3042 3318 3595 3871 4148 No. 8 119 239 358 466 583 699 932 1165 1398 1631 1864 2097 2330 2563 2796 3029 3262 3495 No. 10 101 201 302 402 502 603 804 1005 1205 1406 1607 1808 2009 2210 2411 2612 2813 3014 No. 12 87 174 260 354 442 531 707 884 1061 1238 1415 1592 1769 1945 2122 2300 2476 2653 1/4 76 153 229 306 382 458 611 764 917 1070 1222 1375 1528 1681 1833 1968 2139 2292 5/16 62 123 185 245 306 367 489 611 733 856 978 1100 1222 1345 1467 1589 1711 1833 3/8 50 101 151 204 255 305 407 509 611 713 815 917 1019 1120 1222 1324 1426 1528 7/16 43 87 130 175 219 262 349 437 524 611 698 786 873 960 1048 1135 1222 1310 1/2 38 76 115 153 191 229 305 382 458 535 611 688 764 840 917 993 1070 1146 9/16 34 68 102 137 172 206 274 342 410 478 547 616 683 752 820 888 952 1020 5/8 32 64 96 122 153 183 244 306 367 428 489 550 611 672 733 794 856 917 11/16 28 55 83 111 138 167 222 278 333 389 444 500 556 611 667 722 778 833 3/4 25 51 76 102 128 153 203 255 305 357 407 458 509 560 611 662 713 764 7/8 22 43 65 87 109 131 175 218 262 306 350 392 437 480 524 568 611 655 19 38 57 76 96 115 153 191 230 268 305 344 382 420 458 497 535 573 17 34 51 68 84 102 136 170 204 238 272 306 340 373 407 441 475 509 1 1/4 15 31 46 61 76 92 122 153 183 214 244 275 305 336 367 397 428 458 1 3/8 14 28 42 56 69 83 111 139 167 194 222 250 278 306 333 361 389 417 1 1/2 13 25 38 51 63 76 102 127 153 178 204 229 255 280 305 331 356 382 M 2.0 242 484 725 967 1209 1451 1934 2418 2901 3385 3868 4352 4835 5319 5803 6286 6770 7253 M 3.0 162 324 486 647 809 971 1295 1619 1942 2266 2590 2914 3237 3561 3885 4208 4532 4856 M 3.5 138 277 415 554 692 830 1107 1384 1661 1938 2214 2491 2768 3045 3322 3599 3875 4152 M 4.0 122 243 365 487 608 730 973 1217 1460 1703 1946 2190 2433 2676 2920 3163 3406 3650 M 5.0 97 194 291 388 485 582 776 970 1163 1357 1551 1745 1939 2133 2327 2521 2715 2909 M 6.0 81 162 243 324 405 486 647 809 971 1133 1295 1457 1619 1781 1942 2104 2266 2428 M 7.0 69 138 208 277 346 415 554 692 830 969 1107 1246 1384 1522 1661 1799 1938 2076 Metric Taps M 8.0 61 121 182 243 303 364 485 606 728 849 970 1091 1213 1334 1455 1577 1698 1819 M 10.0 48 97 145 194 242 291 388 485 582 679 776 873 970 1067 1163 1260 1357 1454 M 12.0 40 81 121 162 202 243 324 405 486 567 647 728 809 890 971 1052 1133 1214 M 14.0 35 69 104 139 173 208 277 347 416 485 555 624 693 763 832 901 971 1040 M 16.0 30 61 91 121 152 182 243 303 364 424 485 546 606 667 728 788 849 910 M 18.0 27 54 81 108 135 162 216 269 323 377 431 485 539 593 547 700 754 808 M 20.0 24 49 73 97 121 146 194 243 291 340 388 437 485 534 582 631 680 728 M 22.0 22 44 66 88 110 132 176 221 265 309 353 397 441 485 529 573 618 662 M 24.0 20 40 61 81 101 121 162 202 243 283 323 364 404 445 485 526 566 606 M 27.0 18 36 54 72 90 108 144 180 216 252 287 323 359 395 431 467 503 539 M 30.0 16 32 49 65 81 97 129 162 194 226 259 291 323 356 388 420 453 485 123 Technical 1 1 1/8 $).æCHARACTERISTICæFEATURESæFORæTAPS -ASTERæSTANDARDSæFORæDIMENSIONSæTOæ$).æ 4HEæ STANDARDæ $).æ æ STIPULATESæ THEæ MAJORæ DIMENSIONSæ FORæ TAPSæ ANDæ FLUTELESSæ TAPSæ REQUIREDæ FORæ THEæ THREADæ PRODUCTIONæ WITHæ NOMI NALæ DIAMETERæ Dæ æ æ æ æ MMæ 0ARTæ æ ISæ THEæ MASTERæ STANDARDæ FORæDIMENSIONSæFORæAæLONGæTOOLæDESIGNæPARTææTHEæMASTERæSTANDARDæ FORæDIMENSIONSæFORæTHEæSHORTæTOOLæDESIGNæ!CCORDINGæTOæTHEæNOMINALæ DIAMETERæRANGEæANDæDEPENDENTæONæTHEæPITCHæTHEæNUMBERæOFæTEETHæ ANDæTHEæRATIOæTOTALæLENGTHæTHESEæMASTERæSTANDARDSæINCLUDEæTHEæMAXæ THREADæLENGTHæTHEæSHANKæDESIGNSæhREINFORCEDæSHANKhæANDæhREDUCEDæ SHANKhææ!æDETAILEDæILLUSTRATIONæOFæSHANKæDESIGNSæANDæCHARACTERISTICæ FEATURESæCANæBEæFOUNDæBELOW Taps Fluteless taps $).æ $).æ -ACHINEæTAPS LONG (ANDæTAPSæAND MACHINEæTAPSæSHORT )3/æMETRIC THREAD )3/æMETRIC FINEæTHREAD $).æ $).æ $).æ $).æ 5.#"37 THREAD 5.& THREAD ^$).æ ^$).æ ^$).æ ^$).æ )3/æMETRIC THREAD $).æ $).æ )3/æMETRIC FINEæTHREAD $).æ )3/æMETRIC THREAD $).æ ' THREAD 5.#"37 THREAD 5.& THREAD ' THREAD 0G THREAD $).æ ^$).æ ^$).æ $).æ $).æ æ $).æ )3/æMETRIC FINEæTHREAD 5.# THREAD 5.& THREAD ' THREAD PREVIOUSLY PREVIOUSLY PREVIOUSLY PREVIOUSLY PREVIOUSLY $).æ $).æ ^$).æ ^$).æ $).æ $).æ ^$).æ ^$).æ REINFORCEDæSHANK WITHOUTæNECK REINFORCEDæSHANK WITHæNECK REDUCED SHANK $).æ SYMBOLæUSED INæTABLE 3HANKæDESIGNSæFORæTHREADæCUTTINGæTOOLS 4HREADæTYPE $). ææææææææ4APSææææææææææææ&LUTELESSæTAPS Technical M )3/æMETRIC threads MF )3/æMETRIC fine threads 5.#"37 threads 5.& threads $).æ $).æ $).æ $).æ $).æ $).æ $).æ $).æ ^$).æ ^$).æ ^$).æ ^$).æ ^$).æ æ^$).æ contained in the master standards .OMINALæDIAMETERæRANGESæMM æxæ æxæ æxæ n n n n n n #HARACTERISTICæFEATURESæOFæTHEæINDIVIDUALæSTANDARDS 3TANDARDæFORæMACHINEæTAPSæWITHæREINFORCED SHANKæFORæSTANDARDæ)3/æMETRICæTHREADSæANDæ)3/ METRICælNEæTHREADSæ,ONGæDESIGN 3HANKæDESIGNæINæACCORDANCEæWITHæDIAMETER RANGESæSHOWNæABOVEæMM $).æ Dæææxæ INæTHEæMASTERæSTANDARDæ $).æ Dææææxæ l1 INæTHEæMASTERæSTANDARDæ $).æ d1 $).æ 124 d1 $).æ INæTHEæMASTERæSTANDARDæ $).æ D l1 l1 D 3TANDARDæFORæMACHINEæTAPSæWITHæREDUCEDæSHANK FORæSTANDARDæ)3/æMETRICæTHREADSæ,ONGæDESIGN $IAMETERæRANGEæDæææxææMM éææ-æSHANKæWITHOUTæSQUARE 3TANDARDæFORæMACHINEæTAPSæWITHæREDUCEDæSHANK FORæ)3/æMETRICælNEæTHREADSæ,ONGæDESIGN $IAMETERæRANGEæDæææxææMM Guhring Substrate and Coating Descriptions High speed steels /NLYæHIGHæQUALITYæTOOLæMATERIALSæAREæUSEDæTOæPRODUCEæ(33æTOOLSæ3YSTEMATICæ SELECTIONæOFæALLOYINGæELEMENTSæENSUREæTHEæTOOLæPOSSESSESæTHEæOPTIMALæCHA RACTERISTICSæFORæTHEæINDIVIDUALæTASKSæ4HESEæELEMENTSæINCLUDE æææ4UNGSTENæ-OLYBDENUMæINCREASEæHEATæANDæWEARRESISTANCE æææ6ANADIUMæINCREASESæWEARRESISTANCEæOFæFINISHINGæTOOLS ææ#OBALTæENABLESæINCREASEDæHARDENINGæTEMPERATURESæANDæHEATRESISTANCE Carbide #ARBIDEæSIMILARæTOæSTEELæISæAæLESSæTHANæPRECISEæANDæINDEEDæAæVERYæGENERALæ TERMæFORæANæENTIREæMATERIALæGROUPæ#ARBIDEæCANæBEæPRODUCEDæINæANæINFINITEæ NUMBERæOFæVARIATIONSæWITHæDIFFERENTæCHARACTERISTICSæTHROUGHæTHEæCOMBINATI ONæOFæATæLEASTæTWOæBASICæCONSTITUENTS Carbide production #ARBIDEæCONSISTSæOFæAæHARDNESSæCARRIERænæTUNGSTENæCARBIDEæPLUSæMAYBEæONEæ ORæMOREæCARBIDESænæANDæANæEXTREMELYæTOUGHæCOMPONENTæ#OBALTæ#Oæ#O BALTæBASICALLYæSERVESæASæAæCEMENTINGæORæBINDINGæAGENTæINæWHICHæTHEæCARBIDEæ PARTICLESæAREæDISTRIBUTED /URæCARBIDEæDIVISIONæHASæAæSTATEOFTHEARTæLABORATORYæATæITSæDISPOSALæTOæEN SUREæ OURæ CARBIDEæ ALWAYSæ CORRESPONDSæ WITHæ CUSTOMERæ REQUIREMENTSæ &ROMæ THEæ RAWæ MATERIALæ TOæ THEæ FINISHEDæ PRODUCTæ SAMPLESæ AREæ CONTINUOUSLYæ EXA MINEDæINæORDERæTOæGUARANTEEæANDæDOCUMENTæTHEæHIGHESTæQUALITYæANDæPROCESSæ RELIABILITYæINæACCORDANCEæWITHæTHEæCERTIFICATION High-performance thin-film PVD coatings from Guhring TiN Titanium Nitride TiAlN Titanium Aluminum Nitride FIREX® ® Special TiN-TiAlN nano-FIREX® ® Special TiN-TiAlN Super-A ™ Aluminum Titanium Nitride MolyGlide® ® Identifying Color Coating Process Coating Temperature Layer Structure Thickness (μm) Nanohardness (HV 0.05) Friction Coefficient (fetting) Thermal Stability Hard • Wear-resistant Gold Physical Vapor Depositionn PVD 930º F 500º C Monolayer 1.5 - 4.0 2400 0.50 1100º F 595º C Hard • Wear-resistant Gray Violet Physical Vapor Deposition 930º F 500º C Gradient 1.5 - 5.0 3000 0.25 840º F 450º C Hard • Wear-resistant Black Violet Physical Vapor Deposition PVD 930º F 500º C Monolayer 1.5 - 4.0 3300 0.50 1470º F 800º C Hard • Wear-resistant Red Violet Physical Vapor Deposition PVD 930º F 500º C Multilayer 1.5 - 5.0 3000-3300 0.50 1470º F 800º C Hard • Wear-resistant Red Violet Physical Vapor Deposition PVD 930º F 500º C Micro-thin Multilayer 1.5 - 5.0 3300 0.50 1470º F 800º C Hard • Wear-resistant Dark Gray Physical Vapor Deposition PVD 930º F 500º C Monolayer 1.5 - 4.0 3800 0.60 1650º F 900º C Soft • Lubricating Silver Physical Vapor Deposition PVD 305º F 150º C Monolayer 1.0 n.a. 0.10 1470º F 800º C Hard • Wear-resistant Metallic Silver PVD 930º F 500º C Monolayer 1.5 - 4.0 3500 0.60 1832º F 1000º C MoS2-Based ICE ® Cr-Based PVD Physical Vapor Deposition Technical TiCN Titanium Carbonitride Type 125 5.#ææ5.&æ4APæ$RILLæ3IZES Technical 81-59% Theoretical Percentage of Thread Tap Size dec 3-48 3-48 3-48 3-48 3-48 3-48 3-48 3-48 3-48 3-48 3-48 3-48 3-48 3-48 3-48 3-48 3-56 3-56 3-56 3-56 3-56 3-56 3-56 3-56 3-56 3-56 3-56 3-56 3-56 3-56 4-40 4-40 4-40 4-40 4-40 4-40 4-40 4-40 4-40 4-40 4-40 4-40 4-40 4-40 4-40 4-40 4-40 4-40 4-40 4-48 4-48 4-48 4-48 4-48 4-48 4-48 4-48 4-48 4-48 4-48 4-48 4-48 4-48 4-48 4-48 5-40 5-40 5-40 5-40 5-40 5-40 5-40 5-40 5-40 5-40 5-40 5-40 5-40 5-40 5-40 5-40 5-40 5-40 5-40 5-44 5-44 5-44 5-44 5-44 5-44 5-44 0.0772 0.0776 0.0780 0.0783 0.0787 0.0791 0.0795 0.0799 0.0803 0.0807 0.0811 0.0815 0.0819 0.0823 0.0827 0.0831 0.0803 0.0807 0.0811 0.0815 0.0819 0.0823 0.0827 0.0831 0.0835 0.0839 0.0843 0.0846 0.0850 0.0854 0.0858 0.0862 0.0866 0.0870 0.0874 0.0878 0.0882 0.0886 0.0890 0.0894 0.0898 0.0902 0.0906 0.0909 0.0913 0.0917 0.0921 0.0925 0.0929 0.0902 0.0906 0.0909 0.0913 0.0917 0.0921 0.0925 0.0929 0.0933 0.0937 0.0941 0.0945 0.0949 0.0953 0.0957 0.0961 0.0988 0.0992 0.0996 0.1000 0.1004 0.1008 0.1012 0.1016 0.1020 0.1024 0.1028 0.1031 0.1035 0.1039 0.1043 0.1047 0.1051 0.1055 0.1059 0.1012 0.1016 0.1020 0.1024 0.1028 0.1031 0.1035 126 Fract Wire/ Let 5/64 47 46 45 46 45 44 43 42 3/32 41 39 38 37 38 mm 1.960 1.970 1.980 1.990 2.000 2.010 2.020 2.030 2.040 2.050 2.060 2.070 2.080 2.090 2.100 2.110 2.040 2.050 2.060 2.070 2.080 2.090 2.100 2.110 2.120 2.130 2.140 2.150 2.160 2.170 2.180 2.190 2.200 2.210 2.220 2.230 2.240 2.250 2.260 2.270 2.280 2.290 2.300 2.310 2.320 2.330 2.340 2.350 2.360 2.290 2.300 2.310 2.320 2.330 2.340 2.350 2.360 2.370 2.380 2.390 2.400 2.410 2.420 2.430 2.440 2.510 2.520 2.530 2.540 2.550 2.560 2.570 2.580 2.590 2.600 2.610 2.620 2.630 2.640 2.650 2.660 2.670 2.680 2.690 2.570 2.580 2.590 2.600 2.610 2.620 2.630 81-59% Theoretical Percentage of Thread Theor % 81 79 78 76 75 74 72 71 69 68 66 65 63 62 60 59 81 79 77 75 74 72 70 69 67 65 63 62 60 59 81 79 78 77 76 75 73 72 71 70 68 67 66 65 64 63 61 60 59 81 79 78 76 75 74 72 71 69 68 66 65 63 62 60 59 81 79 78 77 76 75 73 72 71 70 68 67 66 65 64 63 61 60 59 81 79 78 77 75 74 73 Tap Size dec 5-44 5-44 5-44 5-44 5-44 5-44 5-44 5-44 5-44 5-44 6-32 6-32 6-32 6-32 6-32 6-32 6-32 6-32 6-32 6-32 6-32 6-32 6-32 6-32 6-32 6-32 6-32 6-32 6-32 6-32 6-32 6-32 6-32 6-32 6-40 6-40 6-40 6-40 6-40 6-40 6-40 6-40 6-40 6-40 6-40 6-40 6-40 6-40 6-40 6-40 6-40 6-40 6-40 8-32 8-32 8-32 8-32 8-32 8-32 8-32 8-32 8-32 8-32 8-32 8-32 8-32 8-32 8-32 8-32 8-32 8-32 8-32 8-32 8-32 8-32 8-32 8-32 8-36 8-36 8-36 8-36 8-36 8-36 8-36 8-36 8-36 8-36 8-36 8-36 8-36 8-36 0.1039 0.1043 0.1047 0.1051 0.1055 0.1059 0.1063 0.1067 0.1071 0.1075 0.1051 0.1055 0.1059 0.1063 0.1067 0.1071 0.1075 0.1079 0.1083 0.1087 0.1091 0.1094 0.1098 0.1102 0.1106 0.1110 0.1114 0.1118 0.1122 0.1126 0.1130 0.1134 0.1138 0.1142 0.1118 0.1122 0.1126 0.1130 0.1134 0.1138 0.1142 0.1146 0.1150 0.1154 0.1157 0.1161 0.1165 0.1169 0.1173 0.1177 0.1181 0.1185 0.1189 0.1311 0.1315 0.1319 0.1323 0.1327 0.1331 0.1335 0.1339 0.1343 0.1346 0.1350 0.1354 0.1358 0.1362 0.1366 0.1370 0.1374 0.1378 0.1382 0.1386 0.1390 0.1394 0.1398 0.1402 0.1346 0.1350 0.1354 0.1358 0.1362 0.1366 0.1370 0.1374 0.1378 0.1382 0.1386 0.1390 0.1394 0.1398 Fract Wire/ Let 37 36 36 7/64 35 34 33 33 32 29 29 mm 2.640 2.650 2.660 2.670 2.680 2.690 2.700 2.710 2.720 2.730 2.670 2.680 2.690 2.700 2.710 2.720 2.730 2.740 2.750 2.760 2.770 2.780 2.790 2.800 2.810 2.820 2.830 2.840 2.850 2.860 2.870 2.880 2.890 2.900 2.840 2.850 2.860 2.870 2.880 2.890 2.900 2.910 2.920 2.930 2.940 2.950 2.960 2.970 2.980 2.990 3.000 3.010 3.020 3.330 3.340 3.350 3.360 3.370 3.380 3.390 3.400 3.410 3.420 3.430 3.440 3.450 3.460 3.470 3.480 3.490 3.500 3.510 3.520 3.530 3.540 3.550 3.560 3.420 3.430 3.440 3.450 3.460 3.470 3.480 3.490 3.500 3.510 3.520 3.530 3.540 3.550 81-59% Theoretical Percentage of Thread Theor % 71 70 69 67 66 65 63 62 61 59 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 67 66 65 64 63 62 61 60 59 81 79 78 77 76 75 73 72 71 70 69 67 66 65 64 63 61 60 59 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 67 66 65 64 63 62 61 60 59 81 80 79 78 77 76 75 74 73 72 70 69 68 67 Tap Size dec 8-36 8-36 8-36 8-36 8-36 8-36 8-36 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-24 10-32 10-32 10-32 10-32 10-32 10-32 10-32 10-32 10-32 10-32 10-32 10-32 10-32 10-32 10-32 10-32 10-32 10-32 10-32 10-32 10-32 10-32 10-32 10-32 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 12-24 0.1402 0.1406 0.1409 0.1413 0.1417 0.1421 0.1425 0.1461 0.1465 0.1469 0.1472 0.1476 0.1480 0.1484 0.1488 0.1492 0.1496 0.1500 0.1504 0.1508 0.1512 0.1516 0.1520 0.1524 0.1528 0.1531 0.1535 0.1539 0.1543 0.1547 0.1551 0.1555 0.1559 0.1563 0.1567 0.1571 0.1575 0.1579 0.1583 0.1571 0.1575 0.1579 0.1583 0.1587 0.1591 0.1594 0.1598 0.1602 0.1606 0.1610 0.1614 0.1618 0.1622 0.1626 0.1630 0.1634 0.1638 0.1642 0.1646 0.1650 0.1654 0.1657 0.1661 0.1720 0.1724 0.1728 0.1732 0.1736 0.1740 0.1744 0.1748 0.1752 0.1756 0.1760 0.1764 0.1768 0.1772 0.1776 0.1780 0.1783 0.1787 0.1791 0.1795 0.1799 0.1803 0.1807 0.1811 0.1815 0.1819 0.1823 0.1827 Fract Wire/ Let 9/64 28 26 25 24 23 5/32 22 22 21 20 19 11/64 17 16 15 14 mm 3.560 3.570 3.580 3.590 3.600 3.610 3.620 3.710 3.720 3.730 3.740 3.750 3.760 3.770 3.780 3.790 3.800 3.810 3.820 3.830 3.840 3.850 3.860 3.870 3.880 3.890 3.900 3.910 3.920 3.930 3.940 3.950 3.960 3.970 3.980 3.990 4.000 4.010 4.020 3.990 4.000 4.010 4.020 4.030 4.040 4.050 4.060 4.070 4.080 4.090 4.100 4.110 4.120 4.130 4.140 4.150 4.160 4.170 4.180 4.190 4.200 4.210 4.220 4.370 4.380 4.390 4.400 4.410 4.420 4.430 4.440 4.450 4.460 4.470 4.480 4.490 4.500 4.510 4.520 4.530 4.540 4.550 4.560 4.570 4.580 4.590 4.600 4.610 4.620 4.630 4.640 Theor % 66 65 64 63 62 61 60 81 80 80 79 78 78 77 76 75 75 74 73 72 72 71 70 69 69 68 67 67 66 65 64 64 63 62 62 61 60 59 59 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 67 66 65 64 63 62 61 60 59 81 81 80 79 78 78 77 76 75 75 74 73 72 72 71 70 70 69 68 67 67 66 65 64 64 63 62 62 5.#ææ5.&æ4APæ$RILLæ3IZES 81-59% Theoretical Percentage of Thread dec 12-24 12-24 12-24 12-24 12-28 12-28 12-28 12-28 12-28 12-28 12-28 12-28 12-28 12-28 12-28 12-28 12-28 12-28 12-28 12-28 12-28 12-28 12-28 12-28 12-28 12-28 12-28 12-28 12-28 12-28 12-28 1/4-20 1/4-20 1/4-20 1/4-20 1/4-20 1/4-20 1/4-20 1/4-20 1/4-20 1/4-20 1/4-20 1/4-20 1/4-20 1/4-28 1/4-28 1/4-28 1/4-28 1/4-28 1/4-28 1/4-28 1/4-28 1/4-28 5/16-18 5/16-18 5/16-18 5/16-18 5/16-18 5/16-18 5/16-18 5/16-18 5/16-18 5/16-18 5/16-18 5/16-24 5/16-24 5/16-24 5/16-24 5/16-24 5/16-24 5/16-24 3/8-16 3/8-16 3/8-16 3/8-16 3/8-16 3/8-16 3/8-16 3/8-16 3/8-16 3/8-16 3/8-16 3/8-16 3/8-24 3/8-24 3/8-24 3/8-24 3/8-24 3/8-24 7/16-14 7/16-14 0.1831 0.1835 0.1839 0.1843 0.1783 0.1787 0.1791 0.1795 0.1799 0.1803 0.1807 0.1811 0.1815 0.1819 0.1823 0.1827 0.1831 0.1835 0.1839 0.1843 0.1846 0.1850 0.1854 0.1858 0.1862 0.1866 0.1870 0.1874 0.1878 0.1882 0.1886 0.1988 0.1992 0.2008 0.2012 0.2028 0.2031 0.2039 0.2047 0.2055 0.2067 0.2087 0.2091 0.2106 0.2126 0.2130 0.2146 0.2165 0.2185 0.2189 0.2205 0.2209 0.2224 0.2539 0.2559 0.2571 0.2579 0.2598 0.2610 0.2618 0.2638 0.2657 0.2677 0.2697 0.2697 0.2717 0.2736 0.2756 0.2768 0.2776 0.2795 0.3091 0.3110 0.3126 0.3130 0.3150 0.3161 0.3169 0.3189 0.3209 0.3228 0.3248 0.3268 0.3327 0.3346 0.3366 0.3386 0.3406 0.3425 0.3622 0.3642 Fract Wire/ Let 15 14 13 3/16 8 7 13/64 6 5 4 3 7/32 2 F G 17/64 H I J 5/16 O P mm 4.650 4.660 4.670 4.680 4.530 4.540 4.550 4.560 4.570 4.580 4.590 4.600 4.610 4.620 4.630 4.640 4.650 4.660 4.670 4.680 4.690 4.700 4.710 4.720 4.730 4.740 4.750 4.760 4.770 4.780 4.790 5.050 5.060 5.100 5.110 5.150 5.160 5.180 5.200 5.220 5.250 5.300 5.310 5.350 5.400 5.410 5.450 5.500 5.550 5.560 5.600 5.610 5.650 6.450 6.500 6.530 6.550 6.600 6.630 6.650 6.700 6.750 6.800 6.850 6.850 6.900 6.950 7.000 7.030 7.050 7.100 7.850 7.900 7.940 7.950 8.000 8.030 8.050 8.100 8.150 8.200 8.250 8.300 8.450 8.500 8.550 8.600 8.650 8.700 9.200 9.250 81-59% Theoretical Percentage of Thread Theor % 61 60 59 59 81 80 80 79 78 77 76 75 74 74 73 72 71 70 69 68 68 67 66 65 64 63 63 62 61 60 59 79 78 76 75 73 72 71 70 69 67 64 63 61 81 80 76 72 68 67 64 63 59 81 78 77 76 73 71 70 67 65 62 59 79 75 72 68 66 64 61 81 79 77 76 74 73 72 69 67 64 62 59 78 75 71 67 64 60 81 79 Tap Size dec 7/16-14 7/16-14 7/16-14 7/16-14 7/16-14 7/16-14 7/16-14 7/16-14 7/16-14 7/16-14 7/16-14 7/16-14 7/16-20 7/16-20 7/16-20 7/16-20 7/16-20 7/16-20 7/16-20 7/16-20 7/16-20 1/2-13 1/2-13 1/2-13 1/2-13 1/2-13 1/2-13 1/2-13 1/2-13 1/2-13 1/2-13 1/2-13 1/2-13 1/2-13 1/2-13 1/2-20 1/2-20 1/2-20 1/2-20 1/2-20 1/2-20 1/2-20 1/2-20 9/16-12 9/16-12 9/16-12 9/16-12 9/16-12 9/16-12 9/16-12 9/16-12 9/16-12 9/16-12 9/16-12 9/16-12 9/16-12 9/16-18 9/16-18 9/16-18 9/16-18 9/16-18 9/16-18 9/16-18 9/16-18 9/16-18 5/8-11 5/8-11 5/8-11 5/8-11 5/8-11 5/8-11 5/8-11 5/8-11 5/8-11 5/8-11 5/8-11 5/8-11 5/8-11 5/8-11 5/8-11 5/8-11 5/8-18 5/8-18 5/8-18 5/8-18 5/8-18 5/8-18 5/8-18 5/8-18 5/8-18 5/8-18 0.3661 0.3677 0.3681 0.3701 0.3720 0.3740 0.3748 0.3760 0.3772 0.3780 0.3799 0.3819 0.3858 0.3878 0.3898 0.3906 0.3917 0.3937 0.3957 0.3969 0.3976 0.4193 0.4213 0.4220 0.4232 0.4252 0.4272 0.4291 0.4311 0.4331 0.4350 0.4370 0.4374 0.4390 0.4409 0.4488 0.4508 0.4528 0.4531 0.4547 0.4567 0.4587 0.4606 0.4744 0.4764 0.4783 0.4803 0.4823 0.4843 0.4862 0.4882 0.4902 0.4921 0.4941 0.4961 0.4980 0.5039 0.5059 0.5079 0.5098 0.5118 0.5138 0.5157 0.5177 0.5197 0.5295 0.5311 0.5315 0.5335 0.5354 0.5374 0.5394 0.5413 0.5433 0.5453 0.5469 0.5472 0.5492 0.5512 0.5531 0.5551 0.5669 0.5689 0.5709 0.5728 0.5748 0.5768 0.5780 0.5787 0.5807 0.5827 Fract Wire/ Let U 3/8 V W 25/64 X 27/64 7/16 29/64 31/64 33/64 17/32 35/64 37/64 mm 9.300 9.340 9.350 9.400 9.450 9.500 9.520 9.550 9.580 9.600 9.650 9.700 9.800 9.850 9.900 9.920 9.950 10.000 10.050 10.080 10.100 10.650 10.700 10.720 10.750 10.800 10.850 10.900 10.950 11.000 11.050 11.100 11.110 11.150 11.200 11.400 11.450 11.500 11.510 11.550 11.600 11.650 11.700 12.050 12.100 12.150 12.200 12.250 12.300 12.350 12.400 12.450 12.500 12.550 12.600 12.650 12.800 12.850 12.900 12.950 13.000 13.050 13.100 13.150 13.200 13.450 13.490 13.500 13.550 13.600 13.650 13.700 13.750 13.800 13.850 13.890 13.900 13.950 14.000 14.050 14.100 14.400 14.450 14.500 14.550 14.600 14.650 14.680 14.700 14.750 14.800 81-59% Theoretical Percentage of Thread Theor % 77 75 75 73 71 68 68 66 65 64 62 60 80 77 73 72 71 67 64 63 61 81 79 78 77 75 73 71 69 67 65 63 63 61 59 79 76 73 72 70 67 64 61 81 80 78 76 74 72 70 69 67 65 63 61 60 81 78 76 73 70 67 65 62 59 81 80 79 77 76 74 72 71 69 67 66 66 64 62 61 59 81 78 75 72 70 67 65 64 61 59 Tap Size dec 3/4-10 3/4-10 3/4-10 3/4-10 3/4-10 3/4-10 3/4-10 3/4-10 3/4-10 3/4-10 3/4-10 3/4-10 3/4-10 3/4-10 3/4-10 3/4-10 3/4-10 3/4-16 3/4-16 3/4-16 3/4-16 3/4-16 3/4-16 3/4-16 3/4-16 3/4-16 3/4-16 7/8-9 7/8-9 7/8-9 7/8-9 7/8-9 7/8-9 7/8-9 7/8-9 7/8-9 7/8-9 7/8-9 7/8-9 7/8-9 7/8-9 7/8-9 7/8-9 7/8-9 7/8-9 7/8-14 7/8-14 7/8-14 7/8-14 7/8-14 7/8-14 7/8-14 7/8-14 7/8-14 7/8-14 7/8-14 1-8 1-8 1-8 1-8 1-8 1-8 1-8 1-8 1-8 1-8 1-8 1-8 1-8 1-8 1-8 1-8 1-8 1-8 1-8 1-8 1-8 1-12 1-12 1-12 1-12 1-12 1-12 1-12 1-12 1-12 1-12 1-12 1-12 1-12 0.6457 0.6476 0.6496 0.6516 0.6535 0.6555 0.6563 0.6575 0.6594 0.6614 0.6634 0.6654 0.6673 0.6693 0.6713 0.6720 0.6732 0.6850 0.6870 0.6874 0.6890 0.6909 0.6929 0.6949 0.6969 0.6988 0.7008 0.7579 0.7598 0.7618 0.7638 0.7657 0.7677 0.7697 0.7717 0.7736 0.7756 0.7776 0.7795 0.7811 0.7815 0.7835 0.7854 0.7874 0.7894 0.8012 0.8031 0.8051 0.8071 0.8091 0.8110 0.8126 0.8130 0.8150 0.8169 0.8189 0.8681 0.8701 0.8720 0.8740 0.8748 0.8760 0.8780 0.8799 0.8819 0.8839 0.8858 0.8878 0.8898 0.8906 0.8917 0.8937 0.8957 0.8976 0.8996 0.9016 0.9035 0.9134 0.9154 0.9173 0.9193 0.9213 0.9220 0.9232 0.9252 0.9272 0.9291 0.9311 0.9331 0.9350 Fract 21/32 43/64 11/16 49/64 25/32 13/16 7/8 57/64 59/64 Wire/ Let mm 16.400 16.450 16.500 16.550 16.600 16.650 16.670 16.700 16.750 16.800 16.850 16.900 16.950 17.000 17.050 17.070 17.100 17.400 17.450 17.460 17.500 17.550 17.600 17.650 17.700 17.750 17.800 19.250 19.300 19.350 19.400 19.450 19.500 19.550 19.600 19.650 19.700 19.750 19.800 19.840 19.850 19.900 19.950 20.000 20.050 20.350 20.400 20.450 20.500 20.550 20.600 20.640 20.650 20.700 20.750 20.800 22.050 22.100 22.150 22.200 22.220 22.250 22.300 22.350 22.400 22.450 22.500 22.550 22.600 22.620 22.650 22.700 22.750 22.800 22.850 22.900 22.950 23.200 23.250 23.300 23.350 23.400 23.420 23.450 23.500 23.550 23.600 23.650 23.700 23.750 Theor % 80 79 77 76 74 73 72 71 70 68 67 65 64 62 61 60 59 80 78 77 75 73 70 68 65 63 61 81 80 78 77 76 74 73 72 70 69 67 66 65 65 63 62 61 59 80 77 75 73 71 69 67 67 65 63 60 81 80 79 78 77 76 75 74 73 72 70 69 68 67 67 65 64 63 62 61 59 80 78 76 75 73 72 71 69 67 65 64 62 60 127 Technical Tap Size -ETRICæ4APæ$RILLæ3IZES Technical 81-59% Theoretical Percentage of Thread Tap Size dec M3x0.35 M3x0.35 M3x0.35 M3x0.35 M3x0.35 M3x0.35 M3x0.35 M3x0.35 M3x0.35 M3x0.35 M3x0.35 M3x0.50 M3x0.50 M3x0.50 M3x0.50 M3x0.50 M3x0.50 M3x0.50 M3x0.50 M3x0.50 M3x0.50 M3x0.50 M3x0.50 M3x0.50 M3x0.50 M3x0.50 M3.5x0.60 M3.5x0.60 M3.5x0.60 M3.5x0.60 M3.5x0.60 M3.5x0.60 M3.5x0.60 M3.5x0.60 M3.5x0.60 M3.5x0.60 M3.5x0.60 M3.5x0.60 M3.5x0.60 M3.5x0.60 M3.5x0.60 M3.5x0.60 M3.5x0.60 M3.5x0.60 M4x0.50 M4x0.50 M4x0.50 M4x0.50 M4x0.50 M4x0.50 M4x0.50 M4x0.50 M4x0.50 M4x0.50 M4x0.50 M4x0.50 M4x0.50 M4x0.50 M4x0.50 M4x0.70 M4x0.70 M4x0.70 M4x0.70 M4x0.70 M4x0.70 M4x0.70 M4x0.70 M4x0.70 M4x0.70 M4x0.70 M4x0.70 M4x0.70 M4x0.70 M4x0.70 M4x0.70 M4x0.70 M4x0.70 M4x0.70 M4x0.70 M4x0.70 M5x0.50 M5x0.50 M5x0.50 M5x0.50 M5x0.50 M5x0.50 M5x0.50 M5x0.50 M5x0.50 M5x0.50 M5x0.50 0.1035 0.1039 0.1043 0.1047 0.1051 0.1055 0.1059 0.1063 0.1067 0.1071 0.1075 0.0976 0.0980 0.0984 0.0988 0.0992 0.0996 0.1000 0.1004 0.1008 0.1012 0.1016 0.1020 0.1024 0.1028 0.1031 0.1130 0.1134 0.1138 0.1142 0.1146 0.1150 0.1154 0.1157 0.1161 0.1165 0.1169 0.1173 0.1177 0.1181 0.1185 0.1189 0.1193 0.1197 0.1370 0.1374 0.1378 0.1382 0.1386 0.1390 0.1394 0.1398 0.1402 0.1406 0.1409 0.1413 0.1417 0.1421 0.1425 0.1283 0.1287 0.1291 0.1295 0.1299 0.1303 0.1307 0.1311 0.1315 0.1319 0.1323 0.1327 0.1331 0.1335 0.1339 0.1343 0.1346 0.1350 0.1354 0.1358 0.1362 0.1764 0.1768 0.1772 0.1776 0.1780 0.1783 0.1787 0.1791 0.1795 0.1799 0.1803 128 Fract Wire/ Let 37 36 40 39 38 33 32 9/64 28 30 29 16 15 mm 2.630 2.640 2.650 2.660 2.670 2.680 2.690 2.700 2.710 2.720 2.730 2.480 2.490 2.500 2.510 2.520 2.530 2.540 2.550 2.560 2.570 2.580 2.590 2.600 2.610 2.620 2.870 2.880 2.890 2.900 2.910 2.920 2.930 2.940 2.950 2.960 2.970 2.980 2.990 3.000 3.010 3.020 3.030 3.040 3.480 3.490 3.500 3.510 3.520 3.530 3.540 3.550 3.560 3.570 3.580 3.590 3.600 3.610 3.620 3.260 3.270 3.280 3.290 3.300 3.310 3.320 3.330 3.340 3.350 3.360 3.370 3.380 3.390 3.400 3.410 3.420 3.430 3.440 3.450 3.460 4.480 4.490 4.500 4.510 4.520 4.530 4.540 4.550 4.560 4.570 4.580 81-59% Theoretical Percentage of Thread Theor % 81 79 77 75 73 70 68 66 64 62 59 80 79 77 75 74 72 71 69 68 66 65 63 62 60 59 81 80 78 77 76 74 73 72 71 69 68 67 65 64 63 62 60 59 80 79 77 75 74 72 71 69 68 66 65 63 62 60 59 81 80 79 78 77 76 75 74 73 71 70 69 68 67 66 65 64 63 62 60 59 80 79 77 75 74 72 71 69 68 66 65 Tap Size dec M5x0.50 M5x0.50 M5x0.50 M5x0.50 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M5x0.80 M6x0.50 M6x0.50 M6x0.50 M6x0.50 M6x0.50 M6x0.75 M6x0.75 M6x0.75 M6x0.75 M6x0.75 M6x0.75 M6x0.75 M6x1.00 M6x1.00 M6x1.00 M6x1.00 M6x1.00 M6x1.00 M6x1.00 M6x1.00 M6x1.00 M6x1.00 M6x1.00 M6x1.00 M6x1.00 M6x1.00 M6x1.00 M7x0.75 M7x0.75 M7x0.75 M7x0.75 M7x1.00 M7x1.00 M7x1.00 M7x1.00 M7x1.00 M7x1.00 M7x1.00 M8x0.50 M8x0.50 M8x0.50 M8x0.50 M8x0.50 M8x0.75 M8x0.75 M8x0.75 M8x0.75 M8x0.75 M8x1.00 M8x1.00 M8x1.00 M8x1.00 M8x1.00 M8x1.00 M8x1.00 M8x1.00 M8x1.25 M8x1.25 M8x1.25 M8x1.25 M8x1.25 M8x1.25 M8x1.25 0.1807 0.1811 0.1815 0.1819 0.1638 0.1642 0.1646 0.1650 0.1654 0.1657 0.1661 0.1665 0.1669 0.1673 0.1677 0.1681 0.1685 0.1689 0.1693 0.1697 0.1701 0.1705 0.1709 0.1713 0.1717 0.1720 0.1724 0.1728 0.2165 0.2185 0.2189 0.2205 0.2209 0.2055 0.2067 0.2087 0.2091 0.2106 0.2126 0.2130 0.1949 0.1953 0.1957 0.1961 0.1965 0.1969 0.1988 0.1992 0.2008 0.2012 0.2028 0.2031 0.2039 0.2047 0.2055 0.2461 0.2480 0.2500 0.2520 0.2343 0.2362 0.2378 0.2382 0.2402 0.2421 0.2441 0.2949 0.2953 0.2969 0.2972 0.2992 0.2854 0.2874 0.2894 0.2902 0.2913 0.2736 0.2756 0.2768 0.2776 0.2795 0.2811 0.2815 0.2835 0.2638 0.2657 0.2677 0.2697 0.2717 0.2736 0.2756 Fract Wire/ Let 14 19 18 11/64 17 7/32 2 5 4 3 9 8 7 13/64 6 5 D 1/4 E 15/64 B C M 19/64 L J 9/32 17/64 K H I mm 4.590 4.600 4.610 4.620 4.160 4.170 4.180 4.190 4.200 4.210 4.220 4.230 4.240 4.250 4.260 4.270 4.280 4.290 4.300 4.310 4.320 4.330 4.340 4.350 4.360 4.370 4.380 4.390 5.500 5.550 5.560 5.600 5.610 5.220 5.250 5.300 5.310 5.350 5.400 5.410 4.950 4.960 4.970 4.980 4.990 5.000 5.050 5.060 5.100 5.110 5.150 5.160 5.180 5.200 5.220 6.250 6.300 6.350 6.400 5.950 6.000 6.040 6.050 6.100 6.150 6.200 7.490 7.500 7.540 7.550 7.600 7.250 7.300 7.350 7.370 7.400 6.950 7.000 7.030 7.050 7.100 7.140 7.150 7.200 6.700 6.750 6.800 6.850 6.900 6.950 7.000 81-59% Theoretical Percentage of Thread Theor % 63 62 60 59 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 64 63 62 61 60 59 77 69 68 62 60 80 77 72 71 67 62 61 81 80 79 79 78 77 73 72 69 69 65 65 63 62 60 77 72 67 62 81 77 74 73 69 65 62 79 77 71 69 62 77 72 67 65 62 81 77 75 73 69 66 65 62 80 77 74 71 68 65 62 Tap Size dec M8x1.25 M8x1.25 M9x1.00 M9x1.00 M9x1.00 M9x1.00 M9x1.00 M9x1.00 M9x1.00 M10x0.75 M10x0.75 M10x0.75 M10x0.75 M10x0.75 M10x1.00 M10x1.00 M10x1.00 M10x1.00 M10x1.00 M10x1.00 M10x1.00 M10x1.00 M10x1.25 M10x1.25 M10x1.25 M10x1.25 M10x1.25 M10x1.25 M10x1.25 M10x1.25 M10x1.25 M10x1.25 M10x1.50 M10x1.50 M10x1.50 M10x1.50 M10x1.50 M10x1.50 M10x1.50 M10x1.50 M10x1.50 M10x1.50 M10x1.50 M10x1.50 M10x1.50 M11x1.00 M11x1.00 M11x1.00 M11x1.00 M11x1.00 M11x1.00 M11x1.00 M12x1.00 M12x1.00 M12x1.00 M12x1.00 M12x1.00 M12x1.00 M12x1.00 M12x1.25 M12x1.25 M12x1.25 M12x1.25 M12x1.25 M12x1.25 M12x1.25 M12x1.25 M12x1.25 M12x1.50 M12x1.50 M12x1.50 M12x1.50 M12x1.50 M12x1.50 M12x1.50 M12x1.50 M12x1.50 M12x1.50 M12x1.50 M12x1.75 M12x1.75 M12x1.75 M12x1.75 M12x1.75 M12x1.75 M12x1.75 M12x1.75 M12x1.75 M12x1.75 M12x1.75 M12x1.75 0.2768 0.2776 0.3130 0.3150 0.3161 0.3169 0.3189 0.3209 0.3228 0.3642 0.3661 0.3677 0.3681 0.3701 0.3524 0.3543 0.3563 0.3579 0.3583 0.3594 0.3602 0.3622 0.3425 0.3437 0.3445 0.3465 0.3480 0.3484 0.3504 0.3524 0.3543 0.3563 0.3319 0.3327 0.3346 0.3366 0.3386 0.3390 0.3406 0.3425 0.3437 0.3445 0.3465 0.3480 0.3484 0.3917 0.3937 0.3957 0.3969 0.3976 0.3996 0.4016 0.4311 0.4331 0.4350 0.4370 0.4374 0.4390 0.4409 0.4213 0.4220 0.4232 0.4252 0.4272 0.4291 0.4311 0.4331 0.4350 0.4114 0.4130 0.4134 0.4154 0.4173 0.4193 0.4213 0.4220 0.4232 0.4252 0.4272 0.3996 0.4016 0.4035 0.4039 0.4055 0.4063 0.4075 0.4094 0.4114 0.4130 0.4134 0.4154 Fract Wire/ Let J O P U T 23/64 11/32 S Q R 11/32 S X 7/16 27/64 Z 27/64 Y 13/32 Z mm 7.030 7.050 7.950 8.000 8.030 8.050 8.100 8.150 8.200 9.250 9.300 9.340 9.350 9.400 8.950 9.000 9.050 9.090 9.100 9.130 9.150 9.200 8.700 8.730 8.750 8.800 8.840 8.850 8.900 8.950 9.000 9.050 8.430 8.450 8.500 8.550 8.600 8.610 8.650 8.700 8.730 8.750 8.800 8.840 8.850 9.950 10.000 10.050 10.080 10.100 10.150 10.200 10.950 11.000 11.050 11.100 11.110 11.150 11.200 10.700 10.720 10.750 10.800 10.850 10.900 10.950 11.000 11.050 10.450 10.490 10.500 10.550 10.600 10.650 10.700 10.720 10.750 10.800 10.850 10.150 10.200 10.250 10.260 10.300 10.320 10.350 10.400 10.450 10.490 10.500 10.550 Theor % 60 59 81 77 75 73 69 65 62 77 72 68 67 62 81 77 73 70 69 67 65 62 80 78 77 74 71 71 68 65 62 59 81 80 77 74 72 71 69 67 65 64 62 60 59 81 77 73 71 69 65 62 81 77 73 69 69 65 62 80 79 77 74 71 68 65 62 59 80 77 77 74 72 69 67 66 64 62 59 81 79 77 77 75 74 73 70 68 66 66 64 -ETRICæ4APæ$RILLæ3IZES 81-59% Theoretical Percentage of Thread dec M12x1.75 M12x1.75 M14x1.00 M14x1.00 M14x1.00 M14x1.00 M14x1.00 M14x1.00 M14x1.25 M14x1.25 M14x1.25 M14x1.25 M14x1.25 M14x1.25 M14x1.25 M14x1.25 M14x1.50 M14x1.50 M14x1.50 M14x1.50 M14x1.50 M14x1.50 M14x1.50 M14x1.50 M14x1.50 M14x2.00 M14x2.00 M14x2.00 M14x2.00 M14x2.00 M14x2.00 M14x2.00 M14x2.00 M14x2.00 M14x2.00 M14x2.00 M14x2.00 M14x2.00 M15x1.00 M15x1.00 M15x1.00 M15x1.00 M15x1.00 M15x1.00 M15x1.50 M15x1.50 M15x1.50 M15x1.50 M15x1.50 M15x1.50 M15x1.50 M15x1.50 M15x1.50 M15x1.50 M16x1.00 M16x1.00 M16x1.00 M16x1.00 M16x1.00 M16x1.00 M16x1.00 M16x1.50 M16x1.50 M16x1.50 M16x1.50 M16x1.50 M16x1.50 M16x1.50 M16x1.50 M16x1.50 M16x2.00 M16x2.00 M16x2.00 M16x2.00 M16x2.00 M16x2.00 M16x2.00 M16x2.00 M16x2.00 M16x2.00 M16x2.00 M16x2.00 M16x2.00 M16x2.00 M18x1.00 M18x1.00 M18x1.00 M18x1.00 M18x1.00 M18x1.00 0.4173 0.4193 0.5098 0.5118 0.5138 0.5157 0.5177 0.5197 0.5000 0.5020 0.5039 0.5059 0.5079 0.5098 0.5118 0.5138 0.4902 0.4921 0.4941 0.4961 0.4980 0.5000 0.5020 0.5039 0.5059 0.4685 0.4689 0.4705 0.4724 0.4744 0.4764 0.4783 0.4803 0.4823 0.4843 0.4862 0.4882 0.4902 0.5492 0.5512 0.5531 0.5551 0.5571 0.5591 0.5295 0.5311 0.5315 0.5335 0.5354 0.5374 0.5394 0.5413 0.5433 0.5453 0.5886 0.5906 0.5925 0.5937 0.5945 0.5965 0.5984 0.5689 0.5709 0.5728 0.5748 0.5768 0.5787 0.5807 0.5827 0.5846 0.5469 0.5472 0.5492 0.5512 0.5531 0.5551 0.5571 0.5591 0.5610 0.5626 0.5630 0.5650 0.5669 0.5689 0.6673 0.6693 0.6713 0.6720 0.6732 0.6752 Fract 33/64 1/2 1/2 15/32 31/64 17/32 19/32 35/64 9/16 43/64 Wire/ Let mm 10.600 10.650 12.950 13.000 13.050 13.100 13.150 13.200 12.700 12.750 12.800 12.850 12.900 12.950 13.000 13.050 12.450 12.500 12.550 12.600 12.650 12.700 12.750 12.800 12.850 11.900 11.910 11.950 12.000 12.050 12.100 12.150 12.200 12.250 12.300 12.350 12.400 12.450 13.950 14.000 14.050 14.100 14.150 14.200 13.450 13.490 13.500 13.550 13.600 13.650 13.700 13.750 13.800 13.850 14.950 15.000 15.050 15.080 15.100 15.150 15.200 14.450 14.500 14.550 14.600 14.650 14.700 14.750 14.800 14.850 13.890 13.900 13.950 14.000 14.050 14.100 14.150 14.200 14.250 14.290 14.300 14.350 14.400 14.450 16.950 17.000 17.050 17.070 17.100 17.150 81-59% Theoretical Percentage of Thread Theor % 62 59 81 77 73 69 65 62 80 77 74 71 68 65 62 59 80 77 74 72 69 67 64 62 59 81 80 79 77 75 73 71 69 67 65 64 62 60 81 77 73 69 65 62 80 77 77 74 72 69 67 64 62 59 81 77 73 71 69 65 62 80 77 74 72 69 67 64 62 59 81 81 79 77 75 73 71 69 67 66 65 64 62 60 81 77 73 72 69 65 Tap Size dec M18x1.00 M18x1.50 M18x1.50 M18x1.50 M18x1.50 M18x1.50 M18x1.50 M18x1.50 M18x1.50 M18x1.50 M18x1.50 M18x2.00 M18x2.00 M18x2.00 M18x2.00 M18x2.00 M18x2.00 M18x2.00 M18x2.00 M18x2.00 M18x2.00 M18x2.00 M18x2.00 M18x2.00 M18x2.50 M18x2.50 M18x2.50 M18x2.50 M18x2.50 M18x2.50 M18x2.50 M18x2.50 M18x2.50 M18x2.50 M18x2.50 M18x2.50 M18x2.50 M18x2.50 M18x2.50 M18x2.50 M18x2.50 M20x1.50 M20x1.50 M20x1.50 M20x1.50 M20x1.50 M20x1.50 M20x1.50 M20x1.50 M20x1.50 M20x2.00 M20x2.00 M20x2.00 M20x2.00 M20x2.00 M20x2.00 M20x2.00 M20x2.00 M20x2.00 M20x2.00 M20x2.00 M20x2.00 M20x2.00 M20x2.50 M20x2.50 M20x2.50 M20x2.50 M20x2.50 M20x2.50 M20x2.50 M20x2.50 M20x2.50 M20x2.50 M20x2.50 M20x2.50 M20x2.50 M20x2.50 M20x2.50 M20x2.50 M20x2.50 M22x1.00 M22x1.00 M22x1.00 M22x1.00 M22x1.00 M22x1.00 M22x1.00 M22x1.50 M22x1.50 M22x1.50 0.6772 0.6476 0.6496 0.6516 0.6535 0.6555 0.6563 0.6575 0.6594 0.6614 0.6634 0.6260 0.6280 0.6299 0.6319 0.6339 0.6358 0.6378 0.6398 0.6406 0.6417 0.6437 0.6457 0.6476 0.6063 0.6083 0.6094 0.6102 0.6122 0.6142 0.6161 0.6181 0.6201 0.6220 0.6240 0.6248 0.6260 0.6280 0.6299 0.6319 0.6339 0.7264 0.7283 0.7303 0.7323 0.7343 0.7362 0.7382 0.7402 0.7421 0.7047 0.7067 0.7087 0.7106 0.7126 0.7146 0.7165 0.7185 0.7189 0.7205 0.7224 0.7244 0.7264 0.6850 0.6870 0.6874 0.6890 0.6909 0.6929 0.6949 0.6969 0.6988 0.7008 0.7028 0.7031 0.7047 0.7067 0.7087 0.7106 0.7126 0.8248 0.8268 0.8280 0.8287 0.8307 0.8327 0.8346 0.8051 0.8071 0.8091 Fract 21/32 41/64 39/64 5/8 47/64 23/32 11/16 45/64 53/64 Wire/ Let mm 17.200 16.450 16.500 16.550 16.600 16.650 16.670 16.700 16.750 16.800 16.850 15.900 15.950 16.000 16.050 16.100 16.150 16.200 16.250 16.270 16.300 16.350 16.400 16.450 15.400 15.450 15.480 15.500 15.550 15.600 15.650 15.700 15.750 15.800 15.850 15.870 15.900 15.950 16.000 16.050 16.100 18.450 18.500 18.550 18.600 18.650 18.700 18.750 18.800 18.850 17.900 17.950 18.000 18.050 18.100 18.150 18.200 18.250 18.260 18.300 18.350 18.400 18.450 17.400 17.450 17.460 17.500 17.550 17.600 17.650 17.700 17.750 17.800 17.850 17.860 17.900 17.950 18.000 18.050 18.100 20.950 21.000 21.030 21.050 21.100 21.150 21.200 20.450 20.500 20.550 81-59% Theoretical Percentage of Thread Theor % 62 80 77 74 72 69 68 67 64 62 59 81 79 77 75 73 71 69 67 67 65 64 62 60 80 79 78 77 75 74 72 71 69 68 66 66 65 63 62 60 59 80 77 74 72 69 67 64 62 59 81 79 77 75 73 71 69 67 67 65 64 62 60 80 79 78 77 75 74 72 71 69 68 66 66 65 63 62 60 59 81 77 75 73 69 65 62 80 77 74 Tap Size dec M22x1.50 M22x1.50 M22x1.50 M22x1.50 M22x1.50 M22x1.50 M22x1.50 M22x2.00 M22x2.00 M22x2.00 M22x2.00 M22x2.00 M22x2.00 M22x2.00 M22x2.00 M22x2.00 M22x2.00 M22x2.00 M22x2.00 M22x2.00 M22x2.50 M22x2.50 M22x2.50 M22x2.50 M22x2.50 M22x2.50 M22x2.50 M22x2.50 M22x2.50 M22x2.50 M22x2.50 M22x2.50 M22x2.50 M22x2.50 M22x2.50 M22x2.50 M24x1.00 M24x1.00 M24x1.00 M24x1.00 M24x1.00 M24x1.00 M24x1.00 M24x1.50 M24x1.50 M24x1.50 M24x1.50 M24x1.50 M24x1.50 M24x1.50 M24x1.50 M24x1.50 M24x2.00 M24x2.00 M24x2.00 M24x2.00 M24x2.00 M24x2.00 M24x2.00 M24x2.00 M24x2.00 M24x2.00 M24x2.00 M24x2.00 M24x2.00 M24x3.00 M24x3.00 M24x3.00 M24x3.00 M24x3.00 M24x3.00 M24x3.00 M24x3.00 M24x3.00 M24x3.00 M24x3.00 M24x3.00 M24x3.00 M24x3.00 M24x3.00 M24x3.00 M24x3.00 M24x3.00 M24x3.00 M24x3.00 0.8110 0.8126 0.8130 0.8150 0.8169 0.8189 0.8209 0.7835 0.7854 0.7874 0.7894 0.7913 0.7933 0.7953 0.7969 0.7972 0.7992 0.8012 0.8031 0.8051 0.7638 0.7657 0.7677 0.7697 0.7717 0.7736 0.7756 0.7776 0.7795 0.7811 0.7815 0.7835 0.7854 0.7874 0.7894 0.7913 0.9035 0.9055 0.9063 0.9075 0.9094 0.9114 0.9134 0.8839 0.8858 0.8878 0.8898 0.8917 0.8937 0.8957 0.8976 0.8996 0.8622 0.8642 0.8661 0.8681 0.8701 0.8720 0.8740 0.8748 0.8760 0.8780 0.8799 0.8819 0.8839 0.8209 0.8228 0.8248 0.8268 0.8280 0.8287 0.8307 0.8327 0.8346 0.8366 0.8386 0.8406 0.8425 0.8437 0.8445 0.8465 0.8484 0.8504 0.8524 0.8543 Fract 13/16 51/64 49/64 25/32 29/32 7/8 53/64 27/32 Wire/ Let mm 20.600 20.640 20.650 20.700 20.750 20.800 20.850 19.900 19.950 20.000 20.050 20.100 20.150 20.200 20.240 20.250 20.300 20.350 20.400 20.450 19.400 19.450 19.500 19.550 19.600 19.650 19.700 19.750 19.800 19.840 19.850 19.900 19.950 20.000 20.050 20.100 22.950 23.000 23.020 23.050 23.100 23.150 23.200 22.450 22.500 22.550 22.600 22.650 22.700 22.750 22.800 22.850 21.900 21.950 22.000 22.050 22.100 22.150 22.200 22.220 22.250 22.300 22.350 22.400 22.450 20.850 20.900 20.950 21.000 21.030 21.050 21.100 21.150 21.200 21.250 21.300 21.350 21.400 21.430 21.450 21.500 21.550 21.600 21.650 21.700 Theor % 72 70 69 67 64 62 59 81 79 77 75 73 71 69 68 67 65 64 62 60 80 79 77 75 74 72 71 69 68 67 66 65 63 62 60 59 81 77 75 73 69 65 62 80 77 74 72 69 67 64 62 59 81 79 77 75 73 71 69 69 67 65 64 62 60 81 80 78 77 76 76 74 73 72 71 69 68 67 66 65 64 63 62 60 59 129 Technical Tap Size $RILLæ3IZEæFORæ4HREADæ&ORMING DRILL SIZE FOR THREAD FORMING @ 55% THREAD Metric Threads Metric Threads Pitch (mm) Drill size (mm) M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M 0.25 0.25 0.25 0.30 0.35 0.35 0.35 0.40 0.45 0.40 0.45 0.50 0.60 0.70 0.75 0.50 0.80 0.50 0.75 1.00 0.75 1.00 0.75 1.00 1.25 0.75 1.00 1.25 0.75 1.00 0.91 1.01 1.11 1.29 1.47 1.57 1.67 1.85 2.03 2.15 2.43 2.81 3.28 3.74 4.22 4.81 4.70 5.31 5.72 5.63 6.72 6.63 7.72 7.63 7.53 8.72 8.63 8.53 9.72 9.63 Technical Tap Dia. 1 1.1 1.2 1.4 1.6 1.7 1.8 2 2.2 2.3 2.6 3 3.5 4 4.5 5 5 5.5 6 6 7 7 8 8 8 9 9 9 10 10 DRILL SIZE FOR THREAD FORMING @ 57.5% THREAD UNC / UNF Threads Tap Dia. Pitch (mm) Drill size (mm) Tap Size TPI Drill size (mm) M M M M M M M M M M M M M M M M M M M M M M M M M M 1.25 1.50 0.75 1.00 1.50 1.00 1.25 1.50 1.75 1.00 1.25 1.50 2.00 1.00 1.50 1.00 1.50 2.00 1.00 1.50 1.00 1.50 2.00 2.50 1.00 2.50 9.53 9.44 10.72 10.63 10.44 11.63 11.53 11.44 11.35 13.63 13.53 13.44 13.25 14.63 14.44 15.63 15.44 15.25 16.63 16.44 17.63 17.44 17.25 17.07 19.63 19.07 4 4 5 5 6 6 8 8 10 10 12 12 1/4 1/4 5/16 5/16 3/8 3/8 7/16 7/16 1/2 1/2 9/16 9/16 5/8 5/8 3/4 3/4 7/8 1 40 48 40 44 32 40 32 36 24 32 24 28 20 28 18 24 16 24 14 20 13 20 12 18 11 18 10 16 14 12 2.61 2.65 2.94 2.96 3.21 3.27 3.87 3.90 4.43 4.53 5.09 5.15 5.88 6.01 7.41 7.54 8.93 9.13 10.43 10.64 11.97 12.23 13.50 13.76 15.01 15.35 18.10 18.46 21.55 24.61 10 10 11 11 11 12 12 12 12 14 14 14 14 15 15 16 16 16 17 17 18 18 18 18 20 20 Metric Threads Pitch (mm) Drill size (mm) M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M 0.25 0.25 0.25 0.30 0.35 0.35 0.35 0.40 0.45 0.40 0.45 0.50 0.60 0.70 0.75 0.50 0.80 0.50 0.75 1.00 0.75 1.00 0.75 1.00 1.25 0.75 1.00 1.25 0.75 1.00 0.90 1.00 1.10 1.28 1.46 1.56 1.66 1.84 2.02 2.14 2.42 2.80 3.27 3.73 4.21 4.80 4.69 5.30 5.71 5.61 6.71 6.61 7.71 7.61 7.51 8.71 8.61 8.51 9.71 9.61 1 1.1 1.2 1.4 1.6 1.7 1.8 2 2.2 2.3 2.6 3 3.5 4 4.5 5 5 5.5 6 6 7 7 8 8 8 9 9 9 10 10 Metric Threads Metric Threads Pitch (mm) Drill size (mm) M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M 0.25 0.25 0.25 0.30 0.35 0.35 0.35 0.40 0.45 0.40 0.45 0.50 0.60 0.70 0.75 0.50 0.80 0.50 0.75 1.00 0.75 1.00 0.75 1.00 1.25 0.75 1.00 1.25 0.75 1.00 0.90 1.00 1.10 1.28 1.46 1.56 1.66 1.84 2.02 2.14 2.42 2.80 3.26 3.71 4.19 4.80 4.67 5.30 5.69 5.59 6.69 6.59 7.69 7.59 7.49 8.69 8.59 8.49 9.69 9.59 130 1 1.1 1.2 1.4 1.6 1.7 1.8 2 2.2 2.3 2.6 3 3.5 4 4.5 5 5 5.5 6 6 7 7 8 8 8 9 9 9 10 10 Pitch (mm) Drill size (mm) Tap Size TPI Drill size (mm) M M M M M M M M M M M M M M M M M M M M M M M M M M 1.25 1.50 0.75 1.00 1.50 1.00 1.25 1.50 1.75 1.00 1.25 1.50 2.00 1.00 1.50 1.00 1.50 2.00 1.00 1.50 1.00 1.50 2.00 2.50 1.00 2.50 9.51 9.41 10.71 10.61 10.41 11.61 11.51 11.41 11.32 13.61 13.51 13.41 13.22 14.61 14.41 15.61 15.41 15.22 16.61 16.41 17.61 17.41 17.22 17.02 19.61 19.02 4 4 5 5 6 6 8 8 10 10 12 12 1/4 1/4 5/16 5/16 3/8 3/8 7/16 7/16 1/2 1/2 9/16 9/16 5/8 5/8 3/4 3/4 7/8 1 40 48 40 44 32 40 32 36 24 32 24 28 20 28 18 24 16 24 14 20 13 20 12 18 11 18 10 16 14 12 2.60 2.64 2.93 2.95 3.19 3.26 3.86 3.89 4.41 4.52 5.07 5.13 5.85 6.00 7.39 7.52 8.90 9.11 10.40 10.62 11.94 12.20 13.46 13.74 14.97 15.32 18.06 18.43 21.52 24.57 Metric Threads UNC / UNF Threads Tap Dia. Pitch (mm) Drill size (mm) Tap Size TPI Drill size (mm) M M M M M M M M M M M M M M M M M M M M M M M M M M 1.25 1.50 0.75 1.00 1.50 1.00 1.25 1.50 1.75 1.00 1.25 1.50 2.00 1.00 1.50 1.00 1.50 2.00 1.00 1.50 1.00 1.50 2.00 2.50 1.00 2.50 9.49 9.39 10.69 10.59 10.39 11.59 11.49 11.39 11.29 13.59 13.49 13.39 13.18 14.59 14.39 15.59 15.39 15.18 16.59 16.39 17.59 17.39 17.18 16.98 19.59 18.98 4 4 5 5 6 6 8 8 10 10 12 12 1/4 1/4 5/16 5/16 3/8 3/8 7/16 7/16 1/2 1/2 9/16 9/16 5/8 5/8 3/4 3/4 7/8 1 40 48 40 44 32 40 32 36 24 32 24 28 20 28 18 24 16 24 14 20 13 20 12 18 11 18 10 16 14 12 2.59 2.63 2.92 2.94 3.18 3.25 3.84 3.88 4.39 4.50 5.05 5.12 5.83 5.98 7.36 7.51 8.88 9.09 10.37 10.59 11.90 12.18 13.42 13.71 14.93 15.30 18.01 18.40 21.48 24.54 10 10 11 11 11 12 12 12 12 14 14 14 14 15 15 16 16 16 17 17 18 18 18 18 20 20 UNC / UNF Threads Tap Dia. 10 10 11 11 11 12 12 12 12 14 14 14 14 15 15 16 16 16 17 17 18 18 18 18 20 20 DRILL SIZE FOR THREAD FORMING @ 62.5% THREAD DRILL SIZE FOR THREAD FORMING @ 60% THREAD Tap Dia. Metric Threads Tap Dia. Metric Threads Tap Dia. Pitch (mm) Drill size (mm) M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M 0.25 0.25 0.25 0.30 0.35 0.35 0.35 0.40 0.45 0.40 0.45 0.50 0.60 0.70 0.75 0.50 0.80 0.50 0.75 1.00 0.75 1.00 0.75 1.00 1.25 0.75 1.00 1.25 0.75 1.00 0.89 0.99 1.09 1.27 1.45 1.55 1.65 1.83 2.01 2.13 2.41 2.79 3.25 3.70 4.18 4.79 4.66 5.29 5.68 5.58 6.68 6.58 7.68 7.58 7.47 8.68 8.58 8.47 9.68 9.58 1 1.1 1.2 1.4 1.6 1.7 1.8 2 2.2 2.3 2.6 3 3.5 4 4.5 5 5 5.5 6 6 7 7 8 8 8 9 9 9 10 10 UNC / UNF Threads Tap Dia. Pitch (mm) Drill size (mm) Tap Size TPI Drill size (mm) M M M M M M M M M M M M M M M M M M M M M M M M M M 1.25 1.50 0.75 1.00 1.50 1.00 1.25 1.50 1.75 1.00 1.25 1.50 2.00 1.00 1.50 1.00 1.50 2.00 1.00 1.50 1.00 1.50 2.00 2.50 1.00 2.50 9.47 9.36 10.68 10.58 10.36 11.58 11.47 11.36 11.26 13.58 13.47 13.36 13.15 14.58 14.36 15.58 15.36 15.15 16.58 16.36 17.58 17.36 17.15 16.94 19.58 18.94 4 4 5 5 6 6 8 8 10 10 12 12 1/4 1/4 5/16 5/16 3/8 3/8 7/16 7/16 1/2 1/2 9/16 9/16 5/8 5/8 3/4 3/4 7/8 1 40 48 40 44 32 40 32 36 24 32 24 28 20 28 18 24 16 24 14 20 13 20 12 18 11 18 10 16 14 12 2.57 2.62 2.91 2.93 3.17 3.24 3.83 3.87 4.38 4.49 5.04 5.10 5.81 5.96 7.34 7.49 8.85 9.08 10.34 10.57 11.87 12.16 13.39 13.69 14.89 15.28 17.97 18.38 21.45 24.50 10 10 11 11 11 12 12 12 12 14 14 14 14 15 15 16 16 16 17 17 18 18 18 18 20 20 $RILLæ3IZEæFORæ4HREADæ&ORMING DRILL SIZE FOR THREAD FORMING @ 67.5% THREAD DRILL SIZE FOR THREAD FORMING @ 65% THREAD Metric Threads Metric Threads Tap Dia. Pitch (mm) Drill size (mm) M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M 0.25 0.25 0.25 0.30 0.35 0.35 0.35 0.40 0.45 0.40 0.45 0.50 0.60 0.70 0.75 0.50 0.80 0.50 0.75 1.00 0.75 1.00 0.75 1.00 1.25 0.75 1.00 1.25 0.75 1.00 0.89 0.99 1.09 1.27 1.45 1.55 1.65 1.82 2.00 2.12 2.40 2.78 3.23 3.69 4.17 4.78 4.65 5.28 5.67 5.56 6.67 6.56 7.67 7.56 7.45 8.67 8.56 8.45 9.67 9.56 1 1.1 1.2 1.4 1.6 1.7 1.8 2 2.2 2.3 2.6 3 3.5 4 4.5 5 5 5.5 6 6 7 7 8 8 8 9 9 9 10 10 Tap Dia. Pitch (mm) Drill size (mm) Tap Size TPI Drill size (mm) M M M M M M M M M M M M M M M M M M M M M M M M M M 1.25 1.50 0.75 1.00 1.50 1.00 1.25 1.50 1.75 1.00 1.25 1.50 2.00 1.00 1.50 1.00 1.50 2.00 1.00 1.50 1.00 1.50 2.00 2.50 1.00 2.50 9.45 9.34 10.67 10.56 10.34 11.56 11.45 11.34 11.23 13.56 13.45 13.34 13.12 14.56 14.34 15.56 15.34 15.12 16.56 16.34 17.56 17.34 17.12 16.90 19.56 18.90 4 4 5 5 6 6 8 8 10 10 12 12 1/4 1/4 5/16 5/16 3/8 3/8 7/16 7/16 1/2 1/2 9/16 9/16 5/8 5/8 3/4 3/4 7/8 1 40 48 40 44 32 40 32 36 24 32 24 28 20 28 18 24 16 24 14 20 13 20 12 18 11 18 10 16 14 12 2.56 2.61 2.89 2.92 3.15 3.22 3.81 3.85 4.36 4.48 5.02 5.09 5.79 5.95 7.31 7.47 8.82 9.06 10.31 10.55 11.84 12.14 13.35 13.66 14.85 15.25 17.93 18.35 21.42 24.46 10 10 11 11 11 12 12 12 12 14 14 14 14 15 15 16 16 16 17 17 18 18 18 18 20 20 Metric Threads UNC / UNF Threads Tap Dia. Pitch (mm) Drill size (mm) M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M 0.25 0.25 0.25 0.30 0.35 0.35 0.35 0.40 0.45 0.40 0.45 0.50 0.60 0.70 0.75 0.50 0.80 0.50 0.75 1.00 0.75 1.00 0.75 1.00 1.25 0.75 1.00 1.25 0.75 1.00 0.89 0.99 1.09 1.26 1.44 1.54 1.64 1.82 1.99 2.12 2.39 2.77 3.22 3.68 4.16 4.77 4.63 5.27 5.66 5.54 6.66 6.54 7.66 7.54 7.43 8.66 8.54 8.43 9.66 9.54 1 1.1 1.2 1.4 1.6 1.7 1.8 2 2.2 2.3 2.6 3 3.5 4 4.5 5 5 5.5 6 6 7 7 8 8 8 9 9 9 10 10 Metric Threads Metric Threads Pitch (mm) Drill size (mm) M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M 0.25 0.25 0.25 0.30 0.35 0.35 0.35 0.40 0.45 0.40 0.45 0.50 0.60 0.70 0.75 0.50 0.80 0.50 0.75 1.00 0.75 1.00 0.75 1.00 1.25 0.75 1.00 1.25 0.75 1.00 0.88 0.98 1.08 1.26 1.43 1.53 1.63 1.81 1.99 2.11 2.39 2.76 3.21 3.67 4.14 4.76 4.62 5.26 5.64 5.52 6.64 6.52 7.64 7.52 7.41 8.64 8.52 8.41 9.64 9.52 1 1.1 1.2 1.4 1.6 1.7 1.8 2 2.2 2.3 2.6 3 3.5 4 4.5 5 5 5.5 6 6 7 7 8 8 8 9 9 9 10 10 Tap Dia. Pitch (mm) Drill size (mm) Tap Size TPI Drill size (mm) M M M M M M M M M M M M M M M M M M M M M M M M M M 1.25 1.50 0.75 1.00 1.50 1.00 1.25 1.50 1.75 1.00 1.25 1.50 2.00 1.00 1.50 1.00 1.50 2.00 1.00 1.50 1.00 1.50 2.00 2.50 1.00 2.50 9.43 9.31 10.66 10.54 10.31 11.54 11.43 11.31 11.20 13.54 13.43 13.31 13.08 14.54 14.31 15.54 15.31 15.08 16.54 16.31 17.54 17.31 17.08 16.85 19.54 18.85 4 4 5 5 6 6 8 8 10 10 12 12 1/4 1/4 5/16 5/16 3/8 3/8 7/16 7/16 1/2 1/2 9/16 9/16 5/8 5/8 3/4 3/4 7/8 1 40 48 40 44 32 40 32 36 24 32 24 28 20 28 18 24 16 24 14 20 13 20 12 18 11 18 10 16 14 12 2.55 2.60 2.88 2.91 3.14 3.21 3.80 3.84 4.34 4.46 5.00 5.07 5.77 5.93 7.29 7.45 8.80 9.04 10.28 10.53 11.80 12.12 13.32 13.64 14.82 15.23 17.88 18.32 21.39 24.43 10 10 11 11 11 12 12 12 12 14 14 14 14 15 15 16 16 16 17 17 18 18 18 18 20 20 DRILL SIZE FOR THREAD FORMING @ 72.5% THREAD UNC / UNF Threads Tap Dia. Pitch (mm) Drill size (mm) Tap Size TPI Drill size (mm) M M M M M M M M M M M M M M M M M M M M M M M M M M 1.25 1.50 0.75 1.00 1.50 1.00 1.25 1.50 1.75 1.00 1.25 1.50 2.00 1.00 1.50 1.00 1.50 2.00 1.00 1.50 1.00 1.50 2.00 2.50 1.00 2.50 9.41 9.29 10.64 10.52 10.29 11.52 11.41 11.29 11.17 13.52 13.41 13.29 13.05 14.52 14.29 15.52 15.29 15.05 16.52 16.29 17.52 17.29 17.05 16.81 19.52 18.81 4 4 5 5 6 6 8 8 10 10 12 12 1/4 1/4 5/16 5/16 3/8 3/8 7/16 7/16 1/2 1/2 9/16 9/16 5/8 5/8 3/4 3/4 7/8 1 40 48 40 44 32 40 32 36 24 32 24 28 20 28 18 24 16 24 14 20 13 20 12 18 11 18 10 16 14 12 2.54 2.59 2.87 2.90 3.13 3.20 3.79 3.83 4.32 4.45 4.98 5.05 5.75 5.92 7.27 7.43 8.77 9.02 10.25 10.51 11.77 12.10 13.28 13.62 14.78 15.20 17.84 18.29 21.36 24.39 10 10 11 11 11 12 12 12 12 14 14 14 14 15 15 16 16 16 17 17 18 18 18 18 20 20 UNC / UNF Threads Metric Threads Metric Threads Tap Dia. Pitch (mm) Drill size (mm) M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M 0.25 0.25 0.25 0.30 0.35 0.35 0.35 0.40 0.45 0.40 0.45 0.50 0.60 0.70 0.75 0.50 0.80 0.50 0.75 1.00 0.75 1.00 0.75 1.00 1.25 0.75 1.00 1.25 0.75 1.00 0.88 0.98 1.08 1.25 1.43 1.53 1.63 1.80 1.98 2.10 2.38 2.75 3.20 3.65 4.13 4.75 4.61 5.25 5.63 5.51 6.63 6.51 7.63 7.51 7.38 8.63 8.51 8.38 9.63 9.51 1 1.1 1.2 1.4 1.6 1.7 1.8 2 2.2 2.3 2.6 3 3.5 4 4.5 5 5 5.5 6 6 7 7 8 8 8 9 9 9 10 10 Tap Dia. M M M M M M M M M M M M M M M M M M M M M M M M M M 10 10 11 11 11 12 12 12 12 14 14 14 14 15 15 16 16 16 17 17 18 18 18 18 20 20 UNC / UNF Threads Pitch (mm) Drill size (mm) Tap Size TPI Drill size (mm) 1.25 1.50 0.75 1.00 1.50 1.00 1.25 1.50 1.75 1.00 1.25 1.50 2.00 1.00 1.50 1.00 1.50 2.00 1.00 1.50 1.00 1.50 2.00 2.50 1.00 2.50 9.38 9.26 10.63 10.51 10.26 11.51 11.38 11.26 11.14 13.51 13.38 13.26 13.01 14.51 14.26 15.51 15.26 15.01 16.51 16.26 17.51 17.26 17.01 16.77 19.51 18.77 4 4 5 5 6 6 8 8 10 10 12 12 1/4 1/4 5/16 5/16 3/8 3/8 7/16 7/16 1/2 1/2 9/16 9/16 5/8 5/8 3/4 3/4 7/8 1 40 48 40 44 32 40 32 36 24 32 24 28 20 28 18 24 16 24 14 20 13 20 12 18 11 18 10 16 14 12 2.53 2.58 2.86 2.89 3.11 3.19 3.77 3.82 4.30 4.43 4.96 5.04 5.72 5.90 7.24 7.42 8.74 9.00 10.22 10.49 11.74 12.07 13.24 13.59 14.74 15.18 17.80 18.27 21.33 24.36 131 Technical DRILL SIZE FOR THREAD FORMING @ 70% THREAD Tap Dia. Metric Threads Tapping Formulas and Calculations " ! # ! $%& &&$% # &&$% Technical ! 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" ! *, +( ) ".%&, 132 4ROUBLESHOOTINGææ!PPLICATIONæPROBLEMSæWITHæNEWæTAPS Problem Thread produced is too large Thread produced is too small Solution ■ INCORRECTæTAPæTAPæGEOMETRYæNOTæSUITABLE FORæTHEæAPPLICATION ■æAPPLYæCORRECTæTAPæFORæTHEæMATERIAL TOæBEæMACHINED ■ TAPPINGæSIZEæHOLEæTOOæSMALL ■ OBSERVEæTAPPINGæSIZEæHOLEæTABLEæINæTHEæ TECHNICALæSECTIONæ.OTEæDIFFERENTæTAPPINGæ SIZEæHOLEæDIAMETERSæFORæFLUTELESSæTAPS ■ ALIGNMENTæERRORæOFæTAPPING SIZEæHOLEæORæPOSITION ■ æCHECKæFORæCORRECTæTOOLæCLAMPING æAPPLYæFLOATINGæTAPæHOLDER æCHECKæCOREæDRILL ■æMACHINEæSPINDLEæAXIALLYæRESTRICTED ■ææUSEæMECHANICALæFEED æAPPLYæTENSIONCOMPRESSIONæTAPæCHUCK ■ COLDæWELDINGæATæTHEæFLANK OFæTHEæTAP ■ææAPPLYæNEWæTAP æAPPLYæCOATEDæTAP æOPTIMIZEæLUBRICATION ■ LEADæOFæTAPæUNSATISFACTORYæDUE TOæINSUFFICIENTæTHREADæDEPTH ■ææTAPæWITHæFORCEDæFEED æAPPLYæTAPæWITHæMODIFIEDæLEAD ■ CUTTINGæSPEEDæTOOæHIGH ■ææREDUCEæCUTTINGæSPEED æIMPROVEæLUBRICATION ■ LUBRICATIONæORæCOOLANTæSUPPLY INSUFFICIENT ■ ENSUREæSUFFICIENTæANDæSUITABLE COOLANTæSUPPLYæANDæCHECKæCONCENTRATION ■æTOLERANCEæSPECIFICATIONæONæTAPæDOES NOTæCORRESPONDæTOæSPECIFICATIONSæON DRAWINGæANDORæTHREADæGAUGE ■ APPLYæCORRECTæTAPæFORæREQUIRED TOLERANCES ■ SPIRALFLUTEDæTAPS CORRESPONDINGæTOæOURæDESIGN AREæAPPLIEDæWITHæTOOæMUCH PRESSUREæFORæINITIALæTAPPING ■ WITHæSPIRALFLUTEDæTAPSæONLYæLIGHTæPRESSURE REQUIREDæFORæINITIALæTAPPINGæ4HEæTAPæSHOULD IMMEDIATELYæBEæAPPLIEDæWITHINæTHE TENSIONCOMPRESSIONæRANGE ■ INITIALæTAPPINGæPRESSUREæTOO LOWæFORæTAPSæWITHæSPIRALæPOINT CORRESPONDINGæTOæOURæFORMæh"v ■æTAPSæWITHæSPIRALæPOINTæORæLEFTæHANDæSPIRAL REQUIREæHIGHERæAXIALæPRESSURE %NSUREæTAPæOPERATESæWITHINæTHEæTENSION COMPRESSIONæRANGE ■ TOLERANCEæSPECIFICATIONæONæTAPæDOESæNOT CORRESPONDæTOæSPECIFICATIONSæONæDRAWING ANDORæTHREADæGAUGE ■ APPLYæCORRECTæTAPæFORæREQUIRED TOLERANCE ■ INCORRECTæTAP ■ APPLYæCORRECTæTAPæFORæTHEæMATERIALæTOæBE MACHINED ■æTAPæDOESæNOTæCUTæACCURATELY THREADæPLUGæGAUGE ■ AVOIDæSTRONGæAXIALæFORCESæDURINGæTHE CUTTINGæPROCESS ■ MACHINEæSPINDLEæISæAXIALLYæTOOæRIGID ■ APPLYæTENSIONCOMPRESSIONæCHUCK Technical Thread AXIALLYæMISCUT Possible causes 133 4ROUBLESHOOTINGææ!PPLICATIONæPROBLEMSæWITHæNEWæTAPS Problem Thread surface not according to requirements Possible causes Solution ■ CUTTINGæEDGEæGEOMETRYæNOTæSUITABLEæFOR THEæAPPLICATION ■ APPLYæhCORRECTvæTAPæFORæTHEæMATERIAL TOæBEæMACHINED ■ CUTTINGæSPEEDæTOOæHIGH ■ æREDUCEæCUTTINGæSPEED æOPTIMIZEæLUBRICATION ■ INSUFFICIENTæCOOLANT CONCENTRATIONæANDæSUPPLY ■ ENSUREæSUITABLEæCOOLANTæANDæSUFFICIENT VOLUME ■æCHIPæCONGESTION ■ APPLYæSUITABLEæTAPæTYPE ■ TAPPINGæSIZEæHOLEæTOOæSMALL ■ OBSERVEæTAPPINGæSIZEæHOLEæDIAMETERæ SPECIFICATIONSæTOæ$).ææORæRESPECTIVEæ STANDARDSæ/BSERVEæTABLEæFORæFLUTELESSæTAPS ■ WITHæTOUGHæHARDæMATERIALSæLOADINGæONæTOOL ■ APPLYæHANDæTAPæSETS TOOæMUCHæORæPITCHæTOOæSTEEP Technical Tool life insufficient 4OOLæBREAKAGE DURINGæADVANCEæORæRETURN 134 ■ BUILTUPæEDGE ■ APPLYæCOATEDæTAS ■ COLDæWELDING ■ IMPROVEæCOOLANTæSUPPLY ■ SURFACEæHARDENINGæOFæTAPPINGæSIZEæHOLE ■ææCHECKæDRILLæCUTTINGæEDGEæFORæWEAR æHEATæORæSURFACEæTREATMENT æFOLLOWINGæTHREADæPRODUCTION ■æREASONSæLISTEDæUNDERæhTHREADæSURFACE NOTæACCORDINGæTOæREQUIREMENTSh ■æREASONSæLISTEDæUNDERæTHREADæSURFACE hNOTæACCORDINGæTOæREQUIREMENTSh ■ CHIPæCONGESTION ■ APPLYæCORRECTæTAP ■æTAPPINGæSIZEæHOLEæTOOæSMALL ■ OBSERVEæTAPPINGæSIZEæHOLEæDIAæACC TOæ$).ææORæRESPECTIVEæSTANDARDS ■ TEETHæOFæCHAMFERæLEADæOVERLOADED ■ææLONGERæCHAMFERæLEADæBLINDæOR æTHROUGHæHOLE æINCREASEæNOæOFæTEETHæOFæCHAMFERæLEADæBY æINCREASINGæNOæOFæFLUTES æAPPLYæTAPæSETS ■ TAPæHITSæBOTTOMæOFæTAPPING SIZEæHOLE ■ææCHECKæHOLEæDEPTH æAPPLYæTENSIONCOMPRESSION æTAPæCHUCK ■ææLACKæOFæORæINCORRECT æCHAMFERæOFæTAPPINGæSIZEæHOLE æPOSTIONALæORæANGLEæERROR æOFæTAPPINGæSIZEæHOLE ■ææCORRECTæCHAMFERæANGLEæOF æTAPPINGæSIZEæHOLE æENSUREæCORRECTæTOOLæCLAMPING æAPPLYæFLOATINGæTAPæHOLDER æCHECKæCOREæDRILL ■ææTOOLæHARDNESSæNOTæSUITABLE æFORæTHEæAPPLICATION æCUTTINGæEDGEæGEOMETRYæNOTæSUITABLE æFORæTHEæAPPLICATION ■æAPPLYæSUITABLEæTAPæFORæTHEæINDIVIDUAL APPLICATION 4ROUBLESHOOTINGææ%RRORSæANDæDIFFICULTIESæWITHæREGROUNDæTAPS Problem Solution Thread produced is too large ■ BURRS ■ REMOVEæBURRS ■ CUTTINGæEDGEæGEOMETRY CHAMFERæLEADæRAKEæCHAMFER SPIRALæPOINTæANGLEæNOTæRETAINED ■ æOBSERVEæTECHNICALæSPECIFICATIONS æWHENæREGRINDING æOBSERVEæREGRINDINGæINSTRUCTION Thread produced is too small ■ WORNæSECTIONæHASæNOTæBEEN REGROUNDæCORRECTLY ■ REGRINDæAGAINæORæAPPLYæNEWæTOOL /BSERVEæMAXæREGRINDINGæLIMITS ■ TAPæTOOæSMALLæDUEæTOæNOæOF REGRINDS ■ MAXæREGRINDINGæLIMITæREACHED APPLYæNEWæTAP ■ BURRS ■ REMOVEæBURRS ■ CUTTINGæEDGEæGEOMETRY CHAMFERæLEADæRAKEæCHAMFER SPIRALæPOINTæANGLEæNOTæRETAINED ■ æOBSERVEæTECHNICALæSPECIFICATIONS æWHENæREGRINDING æOBSERVEæREGRINDINGæINSTRUCTION ■ PEAKTOVALLEYæHEIGHTæOFæTHE REGROUNDæTAPæTOOæLARGE ■ REGRINDæAGAINæORæAPPLYæNEWæTOOL /BSERVEæMAXæREGRINDINGæLIMITS ■ COLDæWELDINGæATæTHEæFLANKS ■æREMOVEæCOLDæWELDINGæMARKS ■æCUTTINGæEDGEæGEOMETRY CHAMFERæLEADæRAKEæCHAMFER SPIRALæPOINTæANGLEæNOTæRETAINED ■ REGRINDæAGAINæORæAPPLYæNEWæTOOL /BSERVEæMAXæREGRINDINGæLIMITS ■ LOSSæOFæTAPæHARDNESSæDUEæTOæHEAT DEVELOPMENTæDURINGæTHEæREGRINDING PROCESS ■ææCHECKæQUALITYæOFæGRINDINGæWHEEL æCHECKæCOOLANTæSUPPLY ■ LOSSæOFæCOATING ■ææ æRECOAT æCHECKæCOATINGæOFæTHEæMATERIAL æTOæBEæMACHINED Thread produced not according to requirements Tool life insufficient Technical Possible causes 135 Technical !PPENDIXæOFæ'UHRINGæ4APæ0ARTæ.UMBERS Series Thread Type Substrate Color ring Style of tap Standard Coolant Chamfer 318 319 323 338 342 347 803 804 810 811 815 816 822 823 827 828 830 833 834 835 873 876 877 878 879 881 889 890 908 909 910 911 919 927 935 936 969 969 971 972 972 977 978 1188 1194 1200 1581 1582 1583 1584 1585 1717 1719 1721 1723 1837 1838 1858 1858 1859 1859 1860 1860 1861 1861 1870 1872 1873 1883 1883 1890 Metric Metric Metric Metric fine Metric Metric fine Metric Metric Metric Metric Metric Metric Metric Metric Metric fine Metric fine Metric fine Metric fine Metric fine Metric fine UNC UNC Metric UNC Metric UNC Metric Metric UNF Metric Metric UNF Metric Metric fine Metric Metric fine Metric Metric Metric Metric fine Metric fine Metric fine Metric fine Metric Metric Metric fine Metric fine UNC UNC UNF UNF Metric Metric Metric fine Metric fine UNC UNF Metric Metric Metric Metric Metric fine Metric fine Metric fine Metric fine Metric Metric Metric fine Metric Metric Metric Cobalt Cobalt PM cobalt PM cobalt PM cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt PM cobalt Cobalt PM cobalt Cobalt Cobalt Cobalt Cobalt PM cobalt PM cobalt Cobalt Cobalt Cobalt PM cobalt PM cobalt Carbide Carbide Carbide Carbide Carbide Carbide Carbide PM cobalt PM cobalt PM cobalt Carbide Cobalt Cobalt Cobalt Cobalt PM cobalt PM cobalt PM cobalt PM cobalt Cobalt Cobalt Carbide Carbide Carbide Carbide Carbide Carbide Carbide Carbide Cobalt Cobalt Cobalt Carbide Carbide Cobalt white ring white ring blind or through hole blind or through hole form tap form tap form tap blind or through hole through hole through hole blind hole blind hole through hole through hole blind hole blind hole through hole through hole blind or through hole blind hole blind hole blind hole through hole blind hole through hole through hole through hole blind hole blind hole blind hole through hole blind hole blind hole blind hole form tap form tap blind hole blind hole blind or through hole blind or through hole blind hole blind or through hole blind or through hole blind hole blind hole blind hole blind hole blind hole form tap form tap form tap form tap form tap form tap form tap form tap form tap blind hole blind hole blind or through hole blind or through hole blind or through hole blind or through hole blind or through hole blind or through hole blind or through hole blind or through hole through hole through hole through hole blind hole blind hole through hole DIN 371 DIN 376 DIN 371 DIN 374 DIN 376 DIN 374 DIN 371 DIN 371 DIN 371 DIN 371 DIN 376 DIN 376 DIN 376 DIN 376 DIN 374 DIN 374 DIN 374 DIN 374 DIN 374 DIN 374 DIN 371 DIN 371 DIN 371 DIN 376 DIN 376 DIN 376 DIN 371 DIN 376 DIN 374 DIN 371 DIN 376 DIN 374 DIN 371 DIN 374 DIN 376 DIN 374 DIN 371 DIN 371 DIN 371 DIN 371 DIN 371 DIN 371 DIN 374 DIN 371 DIN 376 DIN 376 DIN 374 DIN 371 DIN 376 DIN 371 DIN 376 DIN 371 DIN 376 DIN 371 DIN 374 DIN 371 DIN 374 DIN 371 DIN 371 DIN 376 DIN 376 DIN 371 DIN 374 DIN 376 DIN 371 DIN 371 DIN 376 DIN 374 DIN 376 DIN 376 DIN 371 axial coolant fed axial coolant fed radial coolant fed radial coolant fed radial coolant fed axial coolant fed Form C Form C Form C Form C Form C Form C Form B Form B Form C Form C Form B Form B Form C Form C Form B Form B Form C Form C Form C Form C Form B Form C Form B Form B Form B Form C Form C Form C Form B Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C(K) Form C(K) Form C Form C Form C Form C Form C Form C Form C Form C Form B Form B Form B Form C Form C Form C 136 white ring yellow ring red ring yellow ring red ring yellow ring red ring yellow ring red ring yellow ring red ring yellow ring yellow ring yellow ring red ring yellow ring yellow ring blue ring yellow ring blue ring yellow ring green ring green ring yellow ring blue ring blue ring yellow ring red ring blue ring black ring white ring black ring black ring white ring black ring black ring red ring red ring red ring green ring green ring black ring white ring black ring white ring black ring white ring black ring white ring blue ring blue ring blue ring black ring white ring white ring axial coolant fed axial coolant fed axial coolant fed axial coolant fed axial coolant fed axial coolant fed axial coolant fed axial coolant fed axial coolant fed axial coolant fed radial coolant fed radial coolant fed radial coolant fed radial coolant fed radial coolant fed radial coolant fed radial coolant fed radial coolant fed radial coolant fed radial coolant fed radial coolant fed radial coolant fed radial coolant fed axial coolant fed * All carbide form taps will be changing to TiCN coating as inventory levels are replenished Helix 40° helix 40° helix 40° helix 40° helix 15° helix 40° helix 40° helix 40° helix 40° helix 40° helix 40° helix 40° helix 40° helix 40° helix 15° helix 40° helix 15° helix 15° helix 15° helix 15° helix 15° helix 15° helix 40° helix 40° helix Surface Tolerance Page TiAlN coated TiAlN coated TiN coated TiN coated TiN coated TiAlN coated bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish TiN coated TiN coated bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish TiCN coated TiCN coated TiCN coated *TiCN coated TiN coated TiN coated TiN coated TiN coated AlCrN AlCrN AlCrN AlCrN TiN coated TiN coated bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish bright finish oxide finish 6HX 6HX 6HX 6HX 6HX 6HX ISO 2(6H) 6H ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) 2B 2B ISO 2(6H) 2B ISO 2(6H) 2B ISO 2(6H) ISO 2(6H) 2B ISO 2(6H) ISO 2(6H) 2B 6HX 6HX ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) 6HX 6HX 6HX 6HX 2BX 2BX 2BX 2BX 6HX 6HX 6HX 6HX 2B 2B ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) 6HX Page 82 Page 82 Page 110 Page 112 Page 111 Page 83 Page 28 Page 69 Page 34 Page 72 Page 29 Page 69 Page 34 Page 73 Page 30 Page 70 Page 31 Page 35 Page 35 Page 75 Page 26 Page 32 Page 61 Page 26 Page 60 Page 32 Page 46 Page 46 Page 27 Page 64 Page 64 Page 33 Page 110 Page 112 Page 73 Page 64 Page 90 Page 83 Page 90 Page 91 Page 83 Page 91 Page 91 Page 74 Page 74 Page 74 Page 113 Page 107 Page 107 Page 108 Page 108 Page 110 Page 111 Page 113 Page 112 Page 42 Page 43 Page 87 Page 80 Page 87 Page 80 Page 88 Page 81 Page 88 Page 81 Page 61 Page 60 Page 61 Page 90 Page 83 Page 82 !PPENDIXæOFæ'UHRINGæ4APæ0ARTæ.UMBERS Thread Type Substrate Color ring Style of tap Metric Metric Metric Metric fine Metric fine Metric Metric Metric Metric Metric Metric Metric UNC UNC UNC UNC UNC UNC UNF UNF Metric fine Metric Metric Metric fine UNF Metric Metric fine UNC UNC UNF Metric Metric Metric fine Metric Metric fine UNC UNF Metric Metric fine UNC UNF Metric Metric fine UNC UNF Metric Metric fine UNC UNF Metric Metric UNC UNF Metric UNC UNF Metric UNC UNF Metric UNC UNF Metric UNC UNF Metric UNC UNF Metric UNC Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Carbide Carbide Carbide Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt PM cobalt PM cobalt PM cobalt PM cobalt PM cobalt PM cobalt PM cobalt PM cobalt PM cobalt PM cobalt PM cobalt PM cobalt PM cobalt PM cobalt PM cobalt PM cobalt Carbide Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt PM cobalt PM cobalt PM cobalt PM cobalt PM cobalt PM cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt red ring white ring red ring white ring red ring red ring red ring red ring red ring blind hole through hole blind hole blind or through hole blind hole through hole through hole blind hole blind hole form tap form tap form tap blind or through hole through hole blind hole blind or through hole through hole blind hole blind or through hole through hole blind hole blind hole blind hole blind hole blind hole through hole through hole through hole through hole through hole blind hole blind hole blind hole through hole through hole through hole through hole blind hole blind hole blind hole blind hole through hole through hole through hole through hole blind hole blind hole blind hole blind hole blind hole through hole through hole through hole blind hole blind hole blind hole through hole through hole through hole blind hole blind hole blind hole through hole through hole through hole through hole through hole through hole blind hole blind hole 2901 2903 2905 2907 2909 white ring blue ring blue ring white ring blue ring blue ring white ring blue ring green ring green ring green ring green ring blue ring green ring green ring green ring green ring green ring blue ring blue ring blue ring Ti Ti Ti Ti Ti Ti Ti Ti Ni Ni Ni Ni Ni Ni Ni Ni red ring yellow ring yellow ring yellow ring yellow ring yellow ring yellow ring blue ring blue ring blue ring blue ring blue ring blue ring green ring green ring green ring green ring green ring green ring green ring green ring Standard DIN 371 DIN 376 DIN 376 DIN 374 DIN 374 DIN 371 DIN 376 DIN 371 DIN 376 DIN 371 DIN 376 DIN 371 DIN 371 DIN 371 DIN 371 DIN 376 DIN 376 DIN 376 DIN 374 DIN 374 DIN 374 DIN 371 DIN 376 DIN 374 DIN 374 DIN 371 DIN 374 DIN 371 DIN 376 DIN 374 DIN 376 DIN 371 DIN 374 DIN 371 DIN 371 DIN 371 DIN 371 DIN 371 DIN 371 DIN 371 DIN 371 DIN 371 DIN 371 DIN 371 DIN 371 DIN 371 DIN 371 DIN 371 DIN 371 Guhring Std. ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI Coolant Chamfer Helix Surface Tolerance Page axial coolant fed Form C Form C Form C Form C Form C Form B Form B Form C Form C Form E Form C Form C Form C Form B Form C Form C Form B Form C Form C Form B Form C Form E Form E Form E Form C Form B Form B Form B Form B Form B Form C Form C Form C Form B Form B Form B Form B Form C Form C Form C Form C Form B Form B Form B Form B Form C Form C Form C Form C Form D Form B Form B Form B Form C Form C Form C Form B Form B Form B Form C Form C Form C Form B Form B Form B Form B Form B Form B Form C Form C 40° helix bright finish oxide finish bright finish oxide finish bright finish TiCN coated TiCN coated TiCN coated TiCN coated *TiCN coated *TiCN coated *TiCN coated oxide finish bright finish bright finish oxide finish bright finish bright finish oxide finish bright finish bright finish bright finish bright finish bright finish bright finish oxide finish oxide finish oxide finish oxide finish oxide finish TiN coated TiN coated TiN coated TiCN coated TiCN coated TiCN coated TiCN coated TiCN coated TiCN coated TiCN coated TiCN coated TiAlN coated TiAlN coated TiAlN coated TiAlN coated TiAlN coated TiAlN coated TiAlN coated TiAlN coated TiCN coated bright finish bright finish bright finish bright finish bright finish bright finish TiN coated TiN coated TiN coated TiN coated TiN coated TiN coated bright finish bright finish bright finish TiN coated TiN coated TiN coated bright finish bright finish ISO 2(6H) 6HX ISO 2(6H) 6HX ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) 6HX 6HX 6HX 2B 2B 2B 2B 2B 2B 2B 2B ISO 2(6H) ISO 2(6H) ISO 2(6H) ISO 2(6H) 2B 6H ISO 2(6H) 2B 2B 2B ISO 2(6H) ISO 2(6H) ISO 2(6H) 6HX Page 72 Page 82 Page 72 Page 83 Page 75 Page 69 Page 69 Page 72 Page 73 Page 110 Page 111 Page 110 Page 78 Page 58 Page 62 Page 78 Page 58 Page 62 Page 79 Page 59 Page 47 Page 49 Page 49 Page 48 Page 63 Page 40 Page 41 Page 38 Page 38 Page 39 Page 65 Page 65 Page 65 Page 95 Page 95 Page 94 Page 94 Page 97 Page 97 Page 96 Page 96 Page 95 Page 95 Page 94 Page 94 Page 97 Page 97 Page 96 Page 96 Page 73 Page 28 Page 26 Page 27 Page 34 Page 32 Page 33 Page 60 Page 58 Page 59 Page 64 Page 62 Page 63 Page 40 Page 38 Page 39 Page 40 Page 38 Page 39 Page 46 Page 42 axial coolant fed axial coolant fed axial coolant fed radial coolant fed radial coolant fed radial coolant fed * All carbide form taps will be changing to TiCN coating as inventory levels are replenished 40° helix 40° helix 40° helix 40° helix 40° helix 40° helix 40° helix 40° helix 40° helix 40° helix 40° helix 15° helix 15° helix 15° helix 15° helix 15° helix 15° helix 15° helix 10° helix 10° helix 10° helix 10° helix 0° helix 40° helix 40° helix 40° helix 40° helix 40° helix 40° helix 40° helix 40° helix 6HX 2BX 2BX 6HX 6HX 2BX 2BX 6HX 6HX 2BX 2BX 6HX 6HX 2BX 2BX ISO 2(6H) 6H 2B 2B 6H 2B 2B 6H 2B 2B 6H 2B 2B 6H 2B 2B 6H 2B 2B 6H 2B 137 Technical Series 1894 1897 1901 1904 1907 1914 1915 1916 1917 1927 1931 1972 1979 1980 1981 1984 1985 1986 1989 1990 2424 2790 2791 2792 2867 2876 2879 2881 2883 2885 2895 2896 2897 2900 2902 2904 2906 2908 2910 2912 2914 2916 2917 2918 2919 2920 2921 2922 2923 2944 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 Technical !PPENDIXæOFæ'UHRINGæ4APæ0ARTæ.UMBERS Series Thread Type Substrate Color ring Style of tap 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3954 3955 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 UNF Metric UNC UNF Metric UNC UNF Metric UNC UNF Metric UNC UNF Metric UNC UNF Metric UNC UNF Metric UNC UNF Metric UNC UNF Metric UNC UNF Metric UNC UNF UNC UNF UNC Metric UNC UNF Metric UNC UNF Metric UNC UNF Metric UNC UNF UNF Metric fine Metric fine Metric fine Metric UNC UNF Metric UNC / oversized UNF / oversized UNC / oversized UNF / oversized UNC / oversized UNF / oversized UNC / oversized UNF / oversized UNC / STI UNF / STI UNC / STI UNF / STI UNC Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt Cobalt green ring green ring green ring green ring black ring black ring black ring black ring black ring black ring black ring black ring black ring black ring black ring black ring white ring white ring white ring blind hole blind hole blind hole blind hole through hole through hole through hole through hole through hole through hole blind hole blind hole blind hole blind hole blind hole blind hole blind or through hole blind or through hole blind or through hole form tap form tap form tap form tap form tap form tap through hole through hole through hole blind hole blind hole blind hole blind hole blind hole form tap through hole through hole through hole blind hole blind hole blind hole through hole through hole through hole blind hole blind hole blind hole form tap through hole blind hole form tap blind hole blind hole blind hole form tap ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI ANSI blind hole ANSI 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 138 Cobalt green ring green ring green ring green ring green ring green ring green ring green ring yellow ring yellow ring yellow ring yellow ring yellow ring yellow ring black ring black ring black ring black ring black ring black ring green ring green ring green ring green ring green ring green ring Standard Coolant axial coolant fed axial coolant fed Chamfer Helix Surface Form C Form C Form C Form C Form B Form B Form B Form B Form B Form B Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form C Form B Form B Form B Form C Form C Form C Form C Form C Form E Form B Form B Form B Form C Form C Form C Form B Form B Form B Form C Form C Form C Form E Form B Form C Form C Form E Form E Form E Form E 40° helix 40° helix 40° helix 40° helix bright finish TiN coated TiN coated TiN coated bright finish bright finish bright finish TiN coated TiN coated TiN coated bright finish bright finish bright finish TiN coated TiN coated TiN coated FIREX® coated FIREX® coated FIREX® coated TiN coated TiN coated TiN coated TiCN coated TiCN coated TiCN coated TiCN coated TiCN coated TiCN coated TiCN coated TiCN coated TiCN coated TiN coated TiN coated TiN coated MolyGlide® MolyGlide® MolyGlide® MolyGlide® MolyGlide® MolyGlide® MolyGlide® MolyGlide® MolyGlide® MolyGlide® MolyGlide® MolyGlide® TiN coated TiN coated TiN coated TiN coated TiN coated TiN coated TiN coated TiN coated 2B 6H 2B 2B 6H 2B 2B 6H 2B 2B 6H 2B 2B 6H 2B 2B 6HX 2B 2B 6HX 2BX 2BX 6HX 2BX 2BX 6H 2B 2B 6H 2B 2B 2B 2B 2BX 6H 2B 2B 6H 2B 2B 6H 2B 2B 6H 2B 2B 2BX 6H 6H 6HX 6H 2B 2B 6HX Page 43 Page 46 Page 42 Page 43 Page 87 Page 86 Page 86 Page 87 Page 86 Page 86 Page 90 Page 89 Page 89 Page 90 Page 89 Page 89 Page 80 Page 78 Page 79 Page 109 Page 106 Page 107 Page 109 Page 106 Page 107 Page 40 Page 38 Page 39 Page 46 Page 42 Page 43 Page 45 Page 45 Page 106 Page 28 Page 26 Page 27 Page 34 Page 32 Page 33 Page 87 Page 86 Page 86 Page 90 Page 89 Page 89 Page 108 Page 41 Page 47 Page 111 Page 48 Page 44 Page 44 Page 109 TiN coated H7 Page 52 45° helix 45° helix 45° helix 45° helix 45° helix 45° helix 40° helix 40° helix 40° helix 40° helix 40° helix 40° helix 40° helix 40° helix 45° helix 45° helix 45° helix 40° helix 40° helix 40° helix 40° helix Form C 40° helix 40° helix Tolerance Page Cobalt green ring blind hole ANSI Form C TiN coated H7 Page 53 Cobalt green ring through hole ANSI Form B TiN coated H7 Page 50 Cobalt green ring through hole ANSI Form B TiN coated H7 Page 51 Cobalt green ring blind hole ANSI Form C 40° helix TiN coated H11 Page 52 Cobalt green ring blind hole ANSI Form C 40° helix TiN coated H11 Page 53 Cobalt green ring through hole ANSI Form B TiN coated H11 Page 50 TiN coated H11 Page 51 TiN coated TiN coated TiN coated TiN coated TiN coated 3B 3B 3B 3B 2B Page 55 Page 55 Page 54 Page 54 Page 68 Cobalt green ring through hole ANSI Form B Cobalt Cobalt Cobalt Cobalt PM cobalt green ring green ring green ring green ring red ring blind hole blind hole through hole through hole through hole STI Tap STI Tap STI Tap STI Tap DIN / ANSI Form C Form C Form B Form B Form B 40° helix 40° helix TECHNICAL QUESTIONNAIRE For the Application of Taps o INQUIRY o/2$%2o SAMPLE Reference No. __________________________________________ ENDUSER Company Name _________________________________________ Street Address __________________________________________ City _______________________________ State/Prov _________ Zip/Postal Code _____________ Country ____________________ DISTRIBUTOR Company Name _________________________________________ Street Address __________________________________________ City _______________________________ State/Prov _________ Zip/Postal Code _____________ Country ____________________ Contact Person __________________________________________ Title __________________________________________________ Tel _______________________ Fax ________________________ email _________________________________________________ Contact Person __________________________________________ Title __________________________________________________ Tel _______________________ Fax ________________________ email _________________________________________________ GUHRING Territory Manager _______________________________ Tel _______________________ Fax ________________________ WORKPIECE Material Name / Description ______________________________________________________________________________________ ANSI Material No. _______________________________________ Hardness __________________ (If Aluminum, please list Silicon content) German Material No. Internal use only __________________________ Thread Depth ___________________________________________ Predrilled Hole Diameter _________________________________ Hole Type o Blind o Through TOOL Blank Type o DIN o ANSI o Special Tool Type o Tap o Form Tap o Lubricant Through Tool Material o HSS-E o PM HSS-E o Carbide Coating o Bright o/XIDEDo Nitrided o TiN o TiCN o TiAlN o FIREX® o AlTiN o MolyGlide™ o/THER Size(s) ________________________________________________ _________________ Chamfer Type (No. of threads included) ___________________________ Notes _________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ MACHINE Machine Type / Name ____________________________________________________________________________________________ Spindle Position o Horizontal o VerticaI o/BLIQUE TOOLHOLDER Holder Type o Tapping Chuck LUBRICANT Lubricant Type FEED Feed Type o Water Soluble o Pneumatic o Collet (Rigid) o Tapping Attachment o#UTTING/ILo Minimal Lubricant o Hydraulic o Manual o Tension / Compression Tapping Chuck o Dry o Mechanical QUANTITIES Quantities To Quote _____________________________________________________________________________________________ &AXTO Attn: Paul Motzel STANDARD & SPECIAL PRODUCT RANGE • Carbide Standards • GU 500 DZ Universal Drills RT 100 U/ F High Penetration Drills • Carbide Specials • Coolant-Through GT 80 IC Parabolic Flute Deep Hole Drills GT 50 Parabolic Flute Deep Hole Drills General Purpose Drills Heavy Duty Drills Heavy Duty Split Point Drills Low Helix Drills High Helix Drills Micro-Precision Drills NC Spot Drills Drill-Countersinks Ne Ne w! w! High Performance HSS-E Taps Drills RT High Performance Drills G Drills Gun Drills Three- & Four-Flute Drills Step Drills Step Drill Reamers Step Core Drills Step Core Drill Reamers Reamers Step Reamers Subland Drills Subland Drill Reamers Subland Core Drills Taps End Mills Ne New w! ! Ne w! Drills Step Drills Step Drill Reamers Step Core Drills Step Core Drill Reamers Reamers Step Reamers Subland Drills Subland Drill Reamers Subland Core Drills Taps DISTRIBUTED BY: DISTRIBUTED BY: Titanium Nitride (TiN) Titanium Carbonitride (TiCN) Titanium Aluminum Nitride (TiAlN) FIREX® Special Multilayer Hard Coating Super A (AlTiN) MolyGlide ® Lubricating Soft Coating Nitride / Steam Oxide ICE® Chromium-Based nano-FIREX® micro thin film gradient structure Ne w! GT 80 Parabolic Flute Deep Hole Drills Ne Ne w! w! Coolant-Through GT 100 IC Parabolic Flute Deep Hole Drills N Ne w! ew! Ne w! GT 100 Parabolic Flute Deep Hole Drills • Coating Services • Ne w! • HSS & HSCO Specials • Ne w! High Performance PM HSS-E Taps RT 100 X High Penetration Drills RT 100 R High Penetration Drills RT 100 T Deep Hole Drills Coolant-Through RT 100 U/ F/C High Penetration Drills Coolant-Through RT 150 GG Straight-Flute High Penetration Drills Coolant-Through HT/ RT 800 WP Interchangeable Insert Drills GS 200 U/G Three-Flute High Precision Drills GT 100 Parabolic Flute Deep Hole Drills Exclusive Line ® Small-Diameter Drills EB 100 Small-Diameter Single-Flute Gun Drills General Purpose Drills NC Spot Drills PRO-Line Universal End Mills TECH-Line High Performance End Mills • PCD Specials • Ne Ne w! w! GT 500 DZ High Performance Drills Ne Ne Ne w! w! w! • HSS, HSCO & PM Standards • • Reconditioning Service • • GM 300 Modular HSK • Toolholding System Hydraulic / Shrink / Collet Chucks Adapters Collets • GE 100 Modular • Tooling System ISO 9001: 2000 CERTIFIED ISO 9001: 2000 CERTIFIED Guhring, Inc. P.O. Box 643, Guhring, Inc. Brookfield, WI 53008-0643 P.O. Box 643, Brookfield, WI 53008-0643 Shipping Address 1445 Commerce Shipping AddressAvenue Brookfield, WI 53045 1445 Commerce Avenue (262) 784-6730 Tel Brookfield, WI 53045 (800) 776-6170 Fax Tel (262) 784-9096 784-6730 (800) 776-6170 ( ) Fax 262 West Coast784-9096 Distribution Center 16291Coast Gothard Street Center West Distribution Huntington Beach, CA 17902 Georgetown Lane92647 ) 877-7202 Tel (714) 841-3582 Huntington Beach, CA(800 92647 ( ) Fax 714 841-3592 Tel 841-3582 (800) 877-7202 ) 841-3592 Fax (714Corporation Guhring 20 Steckle Place, Unit #14 Guhring Corporation Kitchener, N2E 2C3#14 20 Steckle ON Place, Unit (800) 463-5555 Tel (519) ON 748-9664 Kitchener, N2E 2C3 ( ) Fax 519 748-9664 748-2954 (800) 463-5555 Tel Fax (519) 748-2954 © Guhring, Inc. 2010 © Guhring, Inc. 2005 FORM 01-3901 (06/10) FORM 01-6400 (8/05)