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Bolt Load-Torque Chart ( Guideline Only )

BOLT TENSION BASED ON 60 PERCENT YIELD

 

Torque-FT. LBS.

Bolt Size
DIA x TPI
HEX Nut Across Flat Stress Area
IN2
Min Yield Strenth (PSI) Bolt Tension (LBS) Disc Washer Dry Film
K=1.22
3/4 x 10 1-1/4" 0.334 105,000 21,060 161
7/8 x 9 1-7/16" 0.461 105,000 29,074 259
1x 8 1-5/8" 0.605 105,000 38,143 388
1-1/8 x 8 1-13/16" 0.790 105,000 49,773 569
1-1/4 x 8 2" 0.999 105,000 62,949 800
1-3/8 x 8 2-3/16" 1.233 105,000 77,671 1,086
1-1/2 x 8 2-3/8" 1.491 105,000 93,938 1,433
1-5/8 x 8 2-9/16" 1.774 105,000 111,751 1,846
1-3/4 x 8 2-3/4" 2.081 105,000 131,109 2,333
1-7/8 x 8 2-15/16" 2.413 105,000 152,013 2,898
2 x 8 3-1/8" 2.769 105,000 174,462 3,547
2-1/8 x 8 3-5/16" 3.150 105,000 198,456 4,287
2-1/4 x 8 3-1/2" 3.555 105,000 223,996 5,124
2-3/8 x 8 3-11/16" 3.985 105,000 251,081 6,063
2-1/2 x 8 3-7/8" 4.440 95,000 253,073 6,432
2-3/4 x 8 4-1/4" 5.422 95,000 309,076 8,641
3 x 8 4-5/8" 6.503 95,000 370,672 11,306
3-1/4 x 8 5" 7.682 95,000 437,862 14,468
3-1/2 x 8 5-3/8" 8.959 95,000 510,644 18,170
3-3/4 x 8 5-3/4" 10.334 95,000 589,020 22,456
4 x 8 6-1/8" 11.807 95,000 672,989 27,368
4-1/4 x 8 6-1/2" 13.378 85,000 682,282 29,480
4-1/2 x 8 6-7/8" 15.047 85,000 767,421 35,109
4-3/4 x 8 7-1/4" 16.815 85,000 857,564 41,413
5 x 8 7-5/8" 18.681 85,000 952,711 48,429
5-1/4 x 8 8" 20.644 85,000 1,052,863 56,197
5-1/2 x 8 8-3/8" 22.706 85,000 1,158,019 64,753
5-3/4 x 8 8-3/4" 24.866 85,000 1,268,180 74,136
6 x 8 9-1/8" 27.124 85,000 1,383,345 84,384
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