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Hex Cap Screws

ASME B 18.2.1 - 1996

Display drawing:

Screw Thread 7/16 5/8 1-3/8 1-3/4 2 1-1/2 5/16 1/2 3/8 9/16 1-1/8 1-1/4 2-1/4 1 1/4 1-1/2 2-3/4 3/4 7/8 3
Nominal Diameter 7/16 5/8 1-3/8 1-3/4 2 1-1/2 5/16 1/2 3/8 9/16 1-1/8 1-1/4 2-1/4 1 1/4 1-1/2 2-3/4 3/4 7/8 3
D 0.4375 0.625 1.375 1.75 2 1.5 0.3125 0.5 0.375 0.5625 1.125 1.25 2.25 1 0.25 1.5 2.75 0.75 0.875 3
P 14 11 6 5 4.5 4 18 13 16 12 7 7 4.5 8 20 6 4 10 9 4
Ds Max 0.4375 0.625 1.375 1.75 2 2.5 0.3125 0.5 0.375 0.5625 1.125 1.25 2.25 1 0.25 1.5 2.75 0.75 0.875 3
Ds Min 0.4305 0.617 1.363 1.738 1.988 2.488 0.3065 0.493 0.369 0.5545 1.114 1.239 2.238 0.99 0.245 1.488 2.738 0.741 0.866 2.988
S Nominal 5/8 15/16 2-1/16 2-5/8 3 3-3/4 1/2 3/4 9/16 13/16 1-11/16 1-7/8 3-3/8 1-1/2 7/16 2-1/4 4-1/8 1-1/8 1-5/16 4-1/2
S Max 0.625 0.938 2.062 2.625 3 3.75 0.5 0.75 0.562 0.812 1.688 1.875 3.375 1.5 0.438 2.25 4.125 1.125 1.312 4.5
S Min 0.612 0.922 1.994 2.538 2.9 3.625 0.489 0.736 0.551 0.798 1.631 1.812 3.262 1.469 0.428 2.175 3.988 1.1 1.285 4.35
E Max 0.722 1.083 2.382 3.031 3.464 4.33 0.577 0.866 0.65 0.938 1.949 2.165 3.897 1.732 0.505 2.598 4.763 1.299 1.516 5.196
E Min 0.698 1.051 2.273 2.893 3.306 4.133 0.557 0.84 0.628 0.91 1.859 2.066 3.719 1.675 0.488 2.48 4.546 1.254 1.465 4.959
K Nominal 9/32 25/64 27/32 1-3/32 1-7/32 1-17/32 13/64 5/16 15/64 23/64 11/16 25/32 1-3/8 39/64 5/32 15/16 1-11/16 15/32 35/64 1-7/8
K Max 0.291 0.403 0.878 1.134 1.263 1.583 0.211 0.323 0.243 0.371 0.718 0.813 1.423 0.627 0.163 0.974 1.744 0.483 0.563 1.935
K Min 0.272 0.378 0.81 1.054 1.175 1.479 0.195 0.302 0.226 0.348 0.658 0.749 1.327 0.591 0.15 0.902 1.632 0.455 0.531 1.815
Kw Min 0.195 0.269 0.569 0.748 0.825 1.042 0.14 0.215 0.16 0.25 0.461 0.53 0.933 0.416 0.106 0.64 1.151 0.324 0.378 1.29
B L≤6 1.125 1.5 3 3.75 4.25 None 0.875 1.25 1 1.375 2.5 2.75 None 2.25 0.75 3.25 None 1.75 2 None
B L＞6 1.375 1.75 3.25 4 4.5 5.5 1.125 1.5 1.25 1.625 2.75 3 5 2.5 1 3.5 6 2 2.25 6.5
R Max 0.025 0.450 0.095 0.095 0.095 0.095 0.025 0.025 0.025 0.450 0.095 0.095 0.095 0.095 0.025 0.095 0.095 0.450 0.065 0.095
R Min 0.015 0.020 0.060 0.060 0.060 0.060 0.015 0.015 0.015 0.020 0.060 0.060 0.060 0.060 0.015 0.060 0.060 0.020 0.040 0.060