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Bolt Nut Recommened Torque Table for SAE Grades

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Torque Table

The following suggested tightening torques provide an excellent starting point for determining torque requirements. Remember, you may need to vary these numbers somewhat based on the individual joint or the amount of fastener lubrication.

This table is offered as the suggested maximum torque values for threaded products and is only a guide.

Torque Values = FT - lbs

Bolt Size Inches Coarse Thread/ inch SAE 0-1-2 74,000 psi Low Carbon Steel SAE Grade 3 100,000 psi Med Carbon Steel SAE Grade 5 120,000 psi Med. Carbon Heat T. Steel SAE Grade 6 133,000 psi Med. Carbon Temp. Steel SAE Grade 7 133,000 psi Med. Carbon Alloy Steel SAE Grade 8 150,000 psi Med Carbon Alloy Steel
1/4 20 6 9 10 12.5 13 14
5/16 18 12 17 19 24 25 29
3/8 16 20 30 33 43 44 47
7/16 14 32 47 54 69 71 78
1/2 13 47 69 78 106 110 119
9/16 12 69 103 114 150 154 169
5/8 11 96 145 154 209 215 230
3/4 10 155 234 257 350 360 380
7/8 9 206 372 382 550 570 600
1 8 310 551 587 825 840 880
1-1/8 7 480 872 794 1304 1325 1430
1-1/4 7 675 1211 1105 1815 1825 1975
1-3/8 6 900 1624 1500 2434 2500 2650
1-1/2 6 1100 1943 1775 2913 3000 3200
1-5/8 5.5 1470 2660 2425 3985 4000 4400
1-3/4 5
1900
3463 3150 5189 5300 5650
1-7/8 5 2360 4695 4200 6980 7000 7600
2 4.5 2750 5427 4550 7491 7500 8200

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