Table 7. American National Standard Grooved Pins ANSI/ASME B18.8.2-2000 (R2010)
Pin Diameter, a A
Pilot Length, C
Chamfer Length, b D
Crown Height, b E
Crown Radius, b F
Neck Width, G
Shoulder Length, H
Neck Radius, J
Neck Diameter, K
Nominal Size or Basic Pin Diameter
Range of Standard Lengths c
Max.
Min.
Ref. 0.015 0.031 0.031 0.031 0.031 0.031 0.031 0.062 0.062 0.062 0.062 0.094 0.094 0.094 0.094
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Ref.
Max.
Min.
0.0312 0.0312 0.0297 0.0469 0.0469 0.0454 0.0625 0.0625 0.0610 0.0781 0.0781 0.0766 0.0938 0.0938 0.0923 0.1094 0.1094 0.1074 0.1250 0.1250 0.1230 0.1563 0.1563 0.1543 0.1875 0.1875 0.1855 0.2188 0.2188 0.2168 0.2500 0.2500 0.2480 0.3125 0.3125 0.3105 0.3750 0.3750 0.3730 0.4375 0.4375 0.4355 0.5000 0.5000 0.4980
… …………………… … …… 1 ∕ 8 - 1 ∕ 2 … …………………… … …… 1 ∕ 8 - 5 ∕ 8
1 ∕ 32 d 3 ∕ 64 d
0.005 0.0115 0.0015 0.088 0.068 0.005 0.0137 0.0037 0.104 0.084
… … … … … … … … … … … … … …
1 ∕ 8 -1 1 ∕ 4 -1
1 ∕ 16
5 ∕ 64 d
0.005 0.0141 0.0041 0.135 0.115 0.038 0.028 0.041 0.031 0.005 0.0160 0.0060 0.150 0.130 0.038 0.028 0.041 0.031 0.005 0.0180 0.0080 0.166 0.146 0.069 0.059 0.041 0.031 0.005 0.0220 0.0120 0.198 0.178 0.069 0.059 0.057 0.047 0.016 0.0230 0.0130 0.260 0.240 0.069 0.059 0.057 0.047 0.016 0.0270 0.0170 0.291 0.271 0.101 0.091 0.072 0.062 0.016 0.0310 0.0210 0.322 0.302 0.101 0.091 0.072 0.062 0.031 0.0390 0.0290 0.385 0.365 0.132 0.122 0.104 0.094 0.031 0.0440 0.0340 0.479 0.459 0.132 0.122 0.135 0.125 0.031 0.0520 0.0420 0.541 0.521 0.195 0.185 0.135 0.125 0.031 0.0570 0.0470 0.635 0.615 0.195 0.185 0.135 0.125
0.016 0.016 0.031 0.031 0.031 0.047 0.047 0.062 0.062 0.094 0.094
0.067 0.057 0.082 0.072 0.088 0.078 0.109 0.099 0.130 0.120 0.151 0.141 0.172 0.162 0.214 0.204 0.255 0.245 0.298 0.288
1 ∕ 4 -1 1 ∕ 4 1 ∕ 4 -1 1 ∕ 4 1 ∕ 4 -1 1 ∕ 2
3 ∕ 32
7 ∕ 64 d
1 ∕ 8
3 ∕ 8 -2
5 ∕ 32 3 ∕ 16 7 ∕ 32
3 ∕ 8 -2 1 ∕ 4
1 ∕ 2 -3
1 ∕ 2 -3 1 ∕ 4 5 ∕ 8 -3 1 ∕ 2 3 ∕ 4 -4 1 ∕ 4 7 ∕ 8 -4 1 ∕ 2
1 ∕ 4
5 ∕ 16
3 ∕ 8
7 ∕ 16
0.317 0.307 1-4 1 ∕ 2
1 ∕ 2
a For expanded diameters, B, see ANSI/ASME B18.8.2-2000 (R2010). b Pins in 1 ⁄ 32 - and 3 ⁄ 64 -inch sizes of any length and all sizes of 1 ⁄
4 -inch nominal length or shorter are not crowned or chamfered.
c Standard lengths increase in 1 ⁄ 4 -inch length for the 3 ⁄ 32 -, and the 1 ⁄
8 -inch steps from
1 ⁄ 8 to 1 inch, and in
1 ⁄ 4 -inch steps above 1 inch. Standard lengths for the 1 ⁄ 32 -, 3 ⁄ 64 -, 1 ⁄
16 -, and
5 ⁄ 64 -inch sizes
64 -, and
1 ⁄ 8 -inch sizes do not apply to Type G grooved pins.
7 ⁄
d Non-stock items, not recommended for new designs.
Nominal Pin Size
Pin Material
3 ∕ 64
1 ∕ 16
5 ∕ 64
3 ∕ 32
7 ∕ 64
1 ∕ 8
5 ∕ 32
3 ∕ 16
7 ∕ 32
1 ∕ 4
5 ∕ 16
3 ∕ 8
7 ∕ 16
1 ∕ 2
1 ∕ 32
Steels
Double Shear Load, Min, lb
Low Carbon
100 180 140 60
220 400 300 140
410 720 540 250
620 1,120 860 390
890 1,220 1,600 2,180 1,240 1,680
1,600 2,820 2,200 990
2,300 4,520 3,310 1,540
3,310 6,440 4,760 2,220
4,510 6,480 3,020
5,880 7,660 11,000 15,000 19,600 8,770 11,500 17,900 26,000 35,200 46,000
Alloy (hardness 40 - 48 RC) Corrosion Resistant
8,460 12,700 18,200 24,800 32,400
Brass
560
760
3,950
6,170
9,050 12,100 15,800
Recommended Hole Sizes for Unplated Pins (The minimum drill size is the same as the pin size. See also text on page 1891 .)
Maximum Diameter Minimum Diameter
0.0324 0.0482 0.0640 0.0798 0.0956 0.1113 0.1271 0.1587 0.1903 0.2219 0.2534 0.3166 0.3797 0.4428 0.5060 0.0312 0.0469 0.0625 0.0781 0.0938 0.1094 0.1250 0.1563 0.1875 0.2188 0.2500 0.3125 0.3750 0.4375 0.5000
All dimensions are in inches.
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