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ASTM A490

Bolt Size TPI Tension (lbs) Tightening Torque Range (ft lbs) (Min - Max)
Min Max Plain Lubricated
1⁄2 13 15,000 18,000 125 - 150 63 - 75
5⁄8 11 24,000 29,000 250 - 302 125 - 151
3⁄4 10 35,000 42,000 438 - 525 219 - 263
7⁄8 9 49,000 59,000 715 - 860 357 - 430
1 8 64,000 77,000 1,067 - 1,283 533 - 642
11⁄8 7 80,000 96,000 1,500 - 1,800 750 - 900
11⁄4 7 102,000 122,000 2,125 - 2,542 1,063 - 1,271
13⁄8 6 121,000 145,000 2,773 - 3,323 1,386 - 1,661
11⁄2 6 148,000 178,000 3,700 - 4,450 1,850 - 2,225
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