Bolt Threading Chart

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TA P A N D D R I L L C H A R T
1
2
3
4
5
6
8
10
12
1/4
5/16
3/8
7/16
1/2
9/16
5/8
3/4
7/8
1
1-1/8
1-1/4
1-3/8
1-1/2
1-3/4
2
64
56
48
40
40
32
32
24
24
20
18
16
14
13
12
11
10
9
8
7
7
6
6
5
4-1/2
Tapping Drill Size
Preferred
Alternative
mm
inch
mm
inch
1.5
1.85
2.1
2.35
2.65
2.85
3.5
3.9
4.5
5.2
6.6
8.1
9.5
11.0
12.2
13.8
19.5
31.0
53
50
47
3/32
38
36
29
25
16
13/64
17/64
5/16
3/8
27/64
31/64
35/64
21/32
49/64
7/8
63/64
1-7/64
1-7/32
1-11/32
1-9/16
1-25/32
UNF Unified National Fine
Size
Inch
Threads
Per Inch
0
1
2
3
4
5
6
8
10
12
1/4
5/16
3/8
7/16
1/2
9/16
5/8
3/4
7/8
1
1
1-1/8
1-1/4
1-3/8
1-1/2
80
72
64
56
48
44
40
36
32
28
28
24
24
20
20
18
18
16
14
12
14*
12
12
12
12
1.55
1.8
2.05
2.3
2.6
2.8
3.4
3.
4.4
5.1
6.5
8.0
9.4
10.8
13.5
165
22.5
25.0
28.0
30.75
34.0
39.5
45.0
Size
Inch
Pitch
Tapping Drill Size
Preferred
Alternative
mm
inch
mm
inch
1.6
0.35
1.25
3/64
1.7
0.35
1.35
55
1.8
0.35
1.45
54
2
0.40
1.60
1/16
2.5
0.45
2.05
46
3
0.5
2.50
40
3.5
0.60
2.90
33
4
0.70
3.30
30
4.5
0.75
3.70
27
5
0.80
4.30
11/64
4.20
19
6
1.0
5.1
13/64
5.0
9
7
1.0
6.1
6.0
15/64
8
1.25
6.9
H
6.8
17/64
9
1.25
7.9
5/16
7.8
10
1.5
8.6
11/32
8.5
11
1.5
9.5
3/8
12
1.75
14
2.0
16
5/64
43
7/64
5/32
11/64
7
F
23/64
17/32
41/64
1-13/64
1-21/64
60˚ Thread Form
Tapping Drill Size
Preferred
Alternative
mm
inch
mm
inch
1.25
1.55
1.90
2.15
2.40
2.7
2.95
36
4.1
4.7
5.5
6.9
85
10.0
11.5
12.9
14.5
17.5
20.4
23.25
23.515/16
26.5
29.5
33.0
36.0
3/64
53
50
45
42
37
33
9/64
21
14
7/32
17/64
Q
25/64
29/64
33/64
37/64
11/16
13/16
59/64
10.2
Y
12.2
31/64
12.0
15/32
2.0
14.25
9/16
14.0
35/64
18
2.5
15.75
15.5
39/64
20
2.5
45/64
17.5
11/16
22
2.5
25/32
19.5
49/64
24
3.0
21.0
53/64
27
3.0
24.0
61/64
30
3.5
26.5
1-3/64
33
3.5
1-11/64
29.5
1-5/32
36
4.0
1-17/64
32.00
1-1/4
39
4.0
15/16
1-3/8
METRIC ISO Fine
3/32
2.65
2.90
3.5
4.0
4.6
5.4
6.8
8.4
9.8
29
5/32
3
1
21/64
12.8
20.5
23.5
1-3/64
1-11/64
1-19/64
1-27/64
Q
13/32
35.0
BSW British Standard Whitworth
60˚ Thread Form
60˚ Thread Form
Tapping Drill Size
Preferred
Alternative
mm
inch
mm
inch
Size
Inch
Threads
Per Inch
4
0.50
3.5
29
5
0.50
4.5
16
6
0.75
5.25
5
7
0.75
6.25
D
6.2
1/4
8
1.00
7.0
J
7.1
9/32
10
1.25
8.75
11/32
S
10
1.00
9.0
T
23/64
12
1.50
10.5
27/64
Z
12
1.2510.75
27/64
12
1.00
11.0
7/16
14
1.5
12.50
31/64
16
1.5
14.75
37/64
18
2.0
16.0
5/8
18
1.5
16.5
21/32
20
2.0
18.0
45/64
20
1.5
18.5
47/64
22
2.0
20.0
25/32
22
1.5
20.5
13/16
24
2.0
22.0
7/8
24
1.5
22.5
7/8
9/64
1/2
14.5
9/16
16.5
20.5
Size
Inch
Threads
Per Inch
1/16*
3/32*
1/8
5/32*
3/16
7/32*
1/4
5/16
3/8
7/16
1/2
9/16
5/8
3/4
7/8
1
1-1/8
1-1/4
1-1/2
1-3/4
2
60
48
40
32
24
24
20
18
16
14
12
12
11
10
9
8
7
7
6
5
4-1/2
Tapping Drill Size
Preferred
Alternative
mm
inch
mm
inch
1.2
1.9
2.55
3.2
3.7
4.5
5.1
6.5
7.9
9.5
10.5
3/64
49
1/8
5/16
12.0
13.5
16.5
22.0
28.0
33.5
39.0
44.5
17/32
41/64
3/4
55/64
31/32
1-3/32
1-5/16
1-17/32
1-49/64
Threads
Per Inch
16.0
19.0
24.5
27.5
33.0
38.5
44.0
3/16
1/4
5/16
3/8
7/16
1/2
9/16
5/8
3/4
7/8
1
1-1/4
1-1/2
1-3/4
32
26
22
20
18
16
16
14
12
11
10
9
8
7
Threads
Per Inch
1/16
1/8
1/4
3/8
1/2
3/4
1
1-1/4
1-1/2
2
2-1/2
3
27
27
18
18
14
14
11-1/2
11-1/2
11-1/2
11-1/2
8
8
9/64
11/64
3/16
1/4
19/64
23/64
13/32
15/32
33/64
5/8
47/64
27/32
61/64
1-5/64
1-19/64
1-33/64
1-3/4
55˚ Thread Form
4.0
5.3
6.8
8.3
5/32
17/64
21/64
14.0
7/16
1/2
35/64
28.5
34.5
40.5
25/32
57/64
1-1/8
1-23/64
1-19/32
3.9
5.2
6.7
8.2
9.5
11.0
12.5
13.8
16.5
19.5
22.5
40.0
NPT National Pipe Taper
Size
Inch
3/32
Tapping Drill Size
Preferred
Alternative
mm
inch
mm
inch
13/64
5/16
3/8
27/64
31/64
17/32
21/32
49/64
7/8
1-7/64
1-11/32
1-37/64
60˚ Thread Form
Tapping Drill Size
Preferred
Alternative
mm
inch
mm
inch
D
R
7/16
9/16
23/32
59/64
1-5/32
1-1/2
1-47/64
2-7/32
2-5/8
3-1/4
DRILL
SIZE
DEC
EQUIV.
MM
DRILL
SIZE
DEC
EQUIV.
MM
DRILL
SIZE
DEC
EQUIV.
MM
DRILL
SIZE
DEC
EQUIV.
MM
DRILL
SIZE
DEC
EQUIV.
MM
DRILL
SIZE
DEC
EQUIV.
MM
DRILL
SIZE
DEC
EQUIV.
MM
80
79
1/64
78
77
76
75
74
73
72
71
70
69
68
1/32
67
66
.0039
.0079
.0098
.0118
.0135
.0145
.0156
.0160
.0181
.0197
.0200
.0210
.0225
.0236
.0240
.0250
.0260
.0276
.0280
.0292
.0295
.0310
.0313
.0315
.0320
.0330
0.10
0.20
0.25
0.30
0.34
0.37
0.40
0.41
0.46
0.50
0.51
0.53
0.57
0.60
0.61
0.64
0.66
0.70
0.71
0.74
0.75
0.79
0.79
0.80
0.81
0.84
65
64
63
62
61
60
59
58
57
56
3/64
55
54
53
1/16
52
51
50
49
48
5/64
47
46
.0350
.0354
.0360
.0370
.0380
.0390
.0394
.0400
.0410
.0420
.0430
.0465
.0469
.0520
.0550
.0595
.0625
.0635
.0670
.0700
.0730
.0760
.0781
.0785
.0787
.0810
0.89
0.90
0.91
0.94
0.97
0.99
1.00
1.02
1.04
1.07
1.09
1.18
1.19
1.32
1.40
1.51
1.59
1.61
1.70
1.78
1.85
1.93
1.98
1.99
2.00
2.06
45
44
43
42
3/32
41
40
39
38
37
36
7/64
35
34
33
32
31
1/8
30
29
28
9/64
27
26
25
.0820
.0860
.0890
.0935
.0938
.0960
.0980
.0995
.1015
.1040
.1065
.1094
.1100
.1110
.1130
.1160
.1181
.1200
.1250
.1285
.1360
.1405
.1406
.1440
.1470
.1495
2.08
2.18
2.26
2.37
2.38
2.44
2.5
2.53
2.58
2.64
2.71
2.78
2.79
2.82
2.87
2.95
3.00
3.05
3.18
3.26
3.45
3.57
3.57
3.66
3.73
3.80
24
23
5/32
22
21
20
19
18
11/64
17
16
15
14
13
3/16
12
11
10
9
8
7
13/64
6
5
.1520
.1540
.1562
.1570
.1575
.1590
.1610
.1660
.1695
.1719
.1730
.1770
.1800
.1820
.1850
.1875
.1890
.1910
.1935
.1960
.1968
.1990
.2010
.2031
.2040
.2055
3.86
3.91
3.97
3.99
4.00
4.04
4.09
4.22
4.31
4.37
4.39
4.50
4.57
4.62
4.70
4.76
4.80
4.85
4.91
4.98
5.00
5.05
5.11
5.16
5.18
5.22
4
3
7/32
2
1
A
15/64
B
C
D
1/4
E
F
G
17/64
H
I
J
K
9/32
L
M
19/64
N
.2090
.2130
.2188
.2210
.2280
.2340
.2344
.2362
.2380
.2420
.2460
.2500
.2500
.2570
.2610
.2656
.2660
.2720
.2756
.2770
.2810
.2812
.2900
.2950
.2969
.3020
5.31
5.41
5.56
5.61
5.79
5.94
5.95
6.00
6.05
6.15
6.25
6.35
6.35
6.53
6.63
6.75
6.76
6.91
7.00
7.04
7.14
7.14
7.37
7.49
7.54
7.67
5/16
O
P
21/64
Q
R
11/32
S
T
23/64
U
3/8
V
W
25/64
X
Y
13/32
Z
27/64
7/16
29/64
.3125
.3150
.3160
.3230
.3281
.3320
.3390
.3438
.3480
.3543
.3580
.3594
.3680
.3750
.3770
.3860
.3906
.3937
.3970
.4040
.4062
.4130
.4219
.4331
.4375
.4531
7.94
8.00
8.03
8.20
8.33
8.43
8.61
8.73
8.84
9.00
9.09
9.13
9.35
9.53
9.56
9.80
9.92
10.00
10.08
10.26
10.32
10.49
10.72
11.00
11.11
11.51
15/32
31/64
1/2
33/64
17/32
35/64
9/16
37/64
19/32
39/64
5/8
41/64
21/32
43/64
11/16
45/64
23/32
47/64
-
.4688
.4724
.4844
.5000
.5118
.5156
.5312
.5469
.5512
.5625
.5781
.5906
.5938
.6094
.6250
.6299
.6406
.6562
.6693
.6719
.6875
.7031
.7087
.7188
.7344
.7480
11.91
12.00
12.30
12.70
13.00
13.10
13.49
13.89
14.00
1429
14.68
15.00
15.08
15.48
15.88
16.00
16.27
16.67
17.00
17.07
17.46
17.88
18.00
18.26
18.65
19.00
1.888.272.3272
1.05
1.75
2.5
2.95
3.6
4.3
5.0
6.4
7.8
9.2
BSF British Standard Fine
Size
Inch
55˚ Thread Form
6.3
8.7
11.1
14.5
18.0
23.25
29.0
38.0
44.0
56.0
67.0
82.5
1/4
11/32
37/64
15/16
HD Supply accepts no liability for any loss or damage either direct or consequential arising out of or in relation to the use or application of the information or products referred to herein.
Threads
Per Inch
*1-12 Thread is UNF standard, however 1-14 is popular demand and generally stocked in place of 1-12.
Size
Inch
METRIC ISO Coarse
60˚ Thread Form
HD Supply accepts no liability for any loss or damage either direct or consequential arising out of or in relation to the use or application of the information or products referred to herein.
UNC Unified National Coarse
DRILL
SIZE
DEC
EQUIV.
MM
3/4
49/64
25/32
51/64
13/16
53/64
27/32
55/64
7/8
57/64
29/32
59/64
15/16
61/64
31/32
63/64
1*
.7500
.7656
.7812
.7874
.7969
.8125
.8268
.8281
.8438
.8594
.8661
.8750
.8906
.9055
.9062
.9219
.9375
.9449
.9531
.9688
.9842
.9844
1.0000
19.05
19.45
19.84
20.00
20.24
20.64
21.00
21.03
21.43
21.84
22.00
22.23
22.62
23.00
23.02
23.42
23.81
24.00
24.21
24.61
25.00
25.00
25.40
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SOURCE!
Fasteners, industrial and safety supplies
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FAST E N E R R E F E R E N C E G U I D E
THREAD TERMINOLOGY
A. FULL DIAMETER SHANK: Equal to major
diameter of thread. Produced by cut thread
or by roll thread on extruded blank. Characteristic of machine bolts and cap screws.
A
B. UNDERSIZED SHANK: Equal approximately
to pitch diameter of thread. Produced by roll
threading a non-extruded blank. Characteristic of machine screws.
B
60%
C.PITCH: The distance from a point on the
screw thread to a corresponding point on
the next thread measured parallel to the axis.
C
Pitch
E
D
F
Major Diameter
Pitch Diameter
Minor Diameter
LEAD: The distance a screw thread advances axially in one turn.
CUT THREAD: Threads are cut or chased, the unthreaded portion of
shank will be equal to major diameter of thread.
FLAT USS
ROLLED THREAD: Threads are cold formed by squeezing the blank
between reciprocating serrated dies. This acts to increase the major
diameter of the thread over and above the diameter of unthreaded
shank (if any), unless an extruded blank is used.
FLAT SAE
Classes of thread are distinguished from each other by the amounts
of tolerance and allowance specified. Externalthreads or bolts are
designated with the suffix “A”; internal ornut threads with “B”.
CLASSES 1A and 1B: For work of rough commercial quality where
loose fit for spin-on-assembly is desirable.
D.PITCH DIAMETER: The simple, effective
diameter of screw thread. Approximately
half way between the major and minor
diameters.
CLASSES 2A and 2B: The recognized standard for normal
production of the great bulk of commercial bolts, nuts and screws.
E. MAJOR DIAMETER: The largest diameter of
a screw thread.
CLASS 4: A theoretical rather than practical class, now obsolete.
F. MINOR DIAMETER: The smallest diameter of
a screw thread.
Types of Bolt and Screw Heads
*PAN HEAD: Recommended for new designs to replace round,
truss and binding heads. Provides a low large diameter head, but
with characteristically high outer edge along the outer periphery
of the head where driving action is most effective for high tightening torques. Slightly different head contour where supplied
with recessed head. See dotted line.
* FLAT HEAD: Supplied fo standard dimensions wih an 80° to 82°
angle to be used where finished surfaces require a flush fastening
unit. The countersunk portion offers good centering possibilities.
* ROUND HEAD: Not recommended for new design (see pan head).
This head was the most universally used design in he past.
*OVAL HEAD: Fully specified as “oval countersunk”, this head is
identical to the standard flat head, but possesses, in addition,
a rounded, neat appearing upper surface for attractiveness of
design.
*FILLISTER HEAD: The standard oval fillister head has a smaller
diameter head increases the pressure applied on the smaller
area and can be assembled close to flanges and raised surfaces.
Headed in counterbored dies to insure concentricity, they may be
used successfully in counterbored holes.
* BINDING HEAD: (Straight Side): Most generally used in electrical
and radio work because of its identifying undercut beneath the
head, which binds and eliminates fraying of stranded wire. Offers
an attractively designed, medium-low head with ordinarily sufficient bearing surface. Not ordinarily recommended as a Phillips
Recessed head - see Pan Head for better functional design.
*TRUSS HEAD: Also known as oven head, stove head, and oval
binding head. A low, neat appearing large diameter head having
excellent design qualities, and as illustrated can be used to cover
larger diameter clearance holes in sheet metal when additional
play in assembly tolerance is required. Suggest pan head as a
substitute.
HOLT HEAD (PATENTED): Provides the perfect tamper-proof
assembly. Theft-proof – decorative, yet inexpensive. Special drivers available for field removal or power driven assembly machines.
ONE-WAY HEAD: This ingenious, tamper-proof type of head,
once assembled cannot be removed, yet is driven with a standard
screw driver. Manufactured with amazing economy in productive
quantities, this simple design can frequently solve costly assembly problems.
SNAKE EYES: - security screws. Provides the perfect tamperproof assembly. Theft-proof – decorative, yet inexpensive.
Special drives available for field removeal or power driven
assembly machines.
WASHER HEAD: This design has the finished appearance of
a conventional round head plus washer, and was originally
created to provide extra large bearing surface under the head.
The modern truss head (carried in stock) normally answers this
purpose. When a larger diameter is required this washer head
design is recommended.
*FLAT AND OVAL HEADS (UNDERCUT): This is the standard
flat or oval head 80° to 82°countersunk screw which has the
lower one-third of the countersunk portion removed to facilitate
production of extremely short lengths. As illustrated it will fit a
standard counterbored hole and is particularly adaptable to flush
assemblies in thin stock.
FLAT HEAD (l00° COUNTERSUNK): This special flat head screw
has been developed for applications requiring flush surfaces, and
is recommended for use in soft materials, to distribute pressure
over a larger and less angular surface. Very well adapted for use
with thin aluminum, soft plastics, etc.
SQUARE SHOULDER SCREWS: An adaptation of the standard
carriage bolt design. Possesses a truss head on a square shank
which resists rotation when located or driven into place. This
square shoulder may also be staked into place as a permanent
fastener. A great many varieties in all screw diameters are
available in productive quantities.
*INDENTED HEXAGON: An inexpensive wrench head fastener
made to standard hexagon head dimensions. The hex is
completely cold upset in a counterbored die and possesses an
identifying depression in the top surface of the head.
*INDENTED HEXAGON WASHER HEAD: Produced in the same
manner as the standard indented hexagon head but with a
washer section at the base of the head to protect the finish of the
assembly from wrench disfigurement.
* HEXAGON HEAD (TRlMMED OR UNDERSIZE): This is the standard
type of wrench-applied hexaoon head, characterized by clean,
sharp corners trimmed to close tolerances. Recommended for
general applications, it is available in all standard patterns and in
all thread diameters.
*HEAD STYLES (WELDING SCREWS): The welding screw has
been developed to provide a strong permanent threaded
fastener which beomes an integral part of the assembly. It utilizes the
principle of projection welding by means of multiple lugs applied
to various head surfaces.
Type“U” (Underlug) for general application. Assembles easily
into prelocated holes and fully utilizes head strength. Top
surfaces of head designed for efficient welding anode contact.
Flat Head styles take full advantage of the self-centering feature
of the countersunk portion and provide a smooth, flush outer
surface.
Type“T” (Overlug) for applications requiring smooth, finished
outer surfaces. Under surface of head is designed for perfect
electrode contact.
CLASSES 3A and 3B: Used where a closed fit between mating parts
for high quality work is required.
CLASS 5: For a wrench fit. Used principally for studs and their
mating tapped holes. Aforce fit requiring the application of high
torque for semi-permanent assembly.
Types of Screw Points
DIE POINT: One of the least expensive pointing operations applied at the
time of heading. This operation provides an end chamfer starting with
a diameter smaller than the root diameter of thethread. The minimum
reduction of the point is approximately 10% below the maximum minor
diameter with an included angle of 40º to 50º.
DOG POINT: A straight pointed section reduced in diameter slightly below the root diameter of the thread, usually extending in length about
two-thirds the diameter of the thread. Recommended forease in starting,
to insure against stripping fine threaded products, and to increase efficiency along production lines.
ROLLED POINT: An efficient method of producing pointed long studs or
long screws with an endchamfer similar to the Die Point. The last thread
and a half is slightly cupped by the thread roll-over operation.
PINCH POINT (ROUNDED): An inexpensive method of applying a 40°, 60°
or 90° lead-in point having a slightly rounded contour but with pinch-off
marks on its surface Used for aligning several sheets or assembling several parts requiring pilot action.
LENGTH
OVAL
ROUND
FLAT
BINDING
FILLISTER
TRUSS
HEXAGON
HEX. SLOT
CARRIAGE
The length of screws and bolts is measured from the largest diameter of the bearing surface to the extreme point.
CARRIAGE
FINISH
STEP
FENDER
HEX
INTERNAL
TOOTH
SQUARE
EXTERNAL
TOOTH
STOVE
INT-EXT.
TOOTH
PLOW
SPLIT
LOCK
ELEVATOR
MI SC
COTTER
PIN
CLEVIS
PIN
DOWEL
PIN
THE ABOVE BOLTS WHEN
FURNISHED WITHOUT NUTS MAY
BE REFERRED TO AS SCREWS
TURNED
EYEBOLT
(BENT WIRE)
FORGED
EYEBOLT
HANGER
NAIL POINT (PINCHED): Usually supplied with sn approximate 45° included angle having a sharp point and slightly squared surface. Used for
impinging or locking against wood or other soft material. Other degrees
of included angle and sharpness also available.
STUD
BLIND
RIVETS
TOGGLE
CUPPED POINT: A special cup section supplied on the end of the threaded
member having adepression in the end to reduce the area in contact with
the surface which increases its holding and locking power under pressure.
BLIND
RIVETS
SPADE
ROUND POINT: A dome-like rounded surface applied to the end of a
threaded member in order to offer pressure without disfigurement. Used
lor adjusting members where friction without cutting action is desirable.
CONE POINT: A precision forming operation to provide any required included angle. Offers a smooth surface accurate length, and a sharp point
which can be produced to any desired contour to fit your particular requirements.
TYPE A POINT: A thread forming screw for use in thin metal .015 to .050
thick. Used with drilled, punched or nested holes in sheet metal, resin
impregnated plywood, asbestos combinations, among others. Not recommended for new design.
TYPE B POINT: A thread forming screw for use in heavier metal .050
to .200 thick. Larger root diameter with finer thread pitch for light and
heavy sheet metal non-ferrous castings, plastics, impregnated plywoods,
asbestos combinations and other materials.
BLIND
RIVETS
SPRING
PIN
D RI V E RS
L SHAPE
ANCHOR
BOLT
NU TS
SQUARE
SOCKET
HEX
(MACHINE
SCREW)
TYPE C POINT: A thread forming screw with either coarse or fine pitch
machine screw thread and blunt tapered point. Eliminates chips and permits replacement with standard screw in the field. Higher driving torque
required. Usable in heavy sheet metal and die castings.
COMBINATION
PHILLIPS SLOT
SQUARE
(MACHINE
SCREW)
TYPE U POINT: A thread forming screw with high Helix thread for driving
or hammering into sheet metal, castings, fiber or plastics for permanent
quick assemblies.
COMBINATION
SQUARE SLOT
REGULAR
SQUARE
PHILLIPS
SLOTTED
(CASTLE)
SLOTTED HEAD
METAL
LOCK
TYPE AB POINT: A thread forming screw combining locating type point
of Type A with thread size and pitch of Type B. Normal limitations of Type
B apply.
TYPE F POINT: A thread cutting screw with machine screw thread with
blunt tapered point, having multi-cutting edges and chip cavities. For
heavy gauge sheet metal. aluminum, zinc and lead die castings, cast iron,
brass and plastic.
TYPE FZ POINT: A thread cutting screw with a tapping screw thread with
blunt tapered point and multi-cutting edges and chip cavities. For plastics, die castings, metal clad and resin impregnated plywoods and asbestos.
TYPE 1 POINT: A thread cutting screw with single flute for general use.
Produces a fine standard machine screw thread for field replacement.
TYPE 17 POINT: A thread cutting screw for wood with a coarse tapping
screw thread and a speciallong sharp point fluted to capture chips.
TYPE 23 POINT: A thread cutting screw in the fine thread series offering
maximum thread cutting area and excellent chip clearing, with minimum
tightening torques.
CLUTCHHEAD
HEXAGON
HEXAGON
WASHER HEAD
TEE
FORGED
WING
HEX
FINISHED
TYPE 25 POINT: A thread cutting screw similar to Type 23 point except
with coarst Type B thread. For plastics and other soft materials with large
chip clearing and cutting edges.
EXTERNAL
TORX DRIVE
SELF-DRILLING: With special drilling points—lengths—diameters that
will drill through 1/4” metal. Eliminates all hole preparation—drills faster
than a drill. No punching, drilling or tapping required. Reduces die costs.
INTERNAL
TORX DRIVE
WELD
SELF-DRILLING: Produces more secure sheet metal assemblies faster...
used as self-drilling screw or driving thru pre-punched holes. Can be used
with or without pilot holes. Positive rake “forward cutting edge” drills
straight thru sheet metal at peak speed. Perfectly mated threads increase
strip and back out pressures.
TAMPER
RESISTANT
TORX DRIVE
KEPS
G RAD E S O F BOLTS
LENGTH
BO LTS
HITCH PIN
CLIP
This guide is for reference only - please call HD Supply for details
HOW TO ME AS URE
WASH E RS
ACORN
OR CAP
TAMPER
PROOF
NYLON
INSERT
LOCK
TAMPER
PROOF
COUPLING
TAMPER
PROOF
STAMPED
WING