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Heavy Hex Bolts

ASME B 18.2.1 - 1996

Display drawing:

Screw Thread 1/2 5/8 3/4 7/8 1 1-1/8 1-1/4 1-3/8 1-1/2 1-3/4 2 2-1/4 2-1/2 2-3/4 3
Nominal Diameter 1/2 5/8 3/4 7/8 1 1-1/8 1-1/4 1-3/8 1-1/2 1-3/4 2 2-1/4 2-1/2 2-3/4 3
D 0.5 0.625 0.75 0.875 1 1.125 1.25 1.375 1.5 1.75 2 2.25 2.5 2.75 3
P 13 11 10 9 8 7 7 6 6 5 4.5 4.5 4 4 4
Ds Max 0.515 0.642 0.768 0.895 1.022 1.149 1.277 1.404 1.531 1.785 2.039 2.305 2.559 2.827 3.081
Ds Min 0.482 0.605 0.729 0.852 0.976 1.098 1.223 1.345 1.470 1.716 1.964 2.214 2.461 2.711 2.961
S Nominal 7/8 1-1/16 1-1/4 1-7/16 1-5/8 1-13/16 2 2-3/16 2-3/8 2-3/4 3-1/8 3-1/2 3-7/8 4-1/4 4-5/8
S Max 0.875 1.062 1.250 1.438 1.625 1.812 2.000 2.188 2.375 2.750 3.125 3.500 3.875 4.250 4.625
S Min 0.850 1.031 1.212 1.394 1.575 1.756 1.938 2.119 2.300 2.662 3.025 3.388 3.750 4.112 4.475
E Max 1.010 1.227 1.443 1.660 1.876 2.093 2.309 2.526 2.742 3.175 3.608 4.041 4.474 4.907 5.340
E Min 0.969 1.175 1.383 1.589 1.796 2.002 2.209 2.416 2.622 3.035 3.449 3.862 4.275 4.688 5.102
K Nominal 11/32 27/64 1/2 37/64 43/64 3/4 27/32 29/32 1 1-5/32 1-11/32 1-1/2 1-21/32 1-13/16 2
K Max 0.364 0.444 0.524 0.604 0.700 0.780 0.876 0.940 1.036 1.196 1.388 1.548 1.708 1.869 2.060
K Min 0.302 0.378 0.455 0.531 0.591 0.658 0.749 0.810 0.902 1.054 1.175 1.327 1.479 1.632 1.815
R Max 0.030 0.060 0.060 0.060 0.090 0.090 0.090 0.090 0.090 0.120 0.120 0.190 0.190 0.190 0.190
R Min 0.010 0.020 0.020 0.020 0.030 0.030 0.030 0.030 0.030 0.040 0.040 0.060 0.060 0.060 0.060
B L≤6 1.250 1.500 1.750 2.000 2.250 2.500 2.750 3.000 3.250 3.750 4.250 4.750 5.250 5.750 6.250
B L＞6 1.500 1.750 2.000 2.250 2.500 2.750 3.000 3.250 3.500 4.000 4.500 5.000 5.500 6.000 6.500