ASTM A325
| Bolt Size | TPI | Tension | Tightening Torque Range (ft lbs) (Min - Max) | ||
|---|---|---|---|---|---|
| Min | Max | Galv+Waxed | Plain | ||
| 1⁄2 | 13 | 12,000 | 14,000 | 50 - 58 | 100 - 117 |
| 5⁄8 | 11 | 19,000 | 23,000 | 99 - 120 | 198 - 240 |
| 3⁄4 | 10 | 28,000 | 34,000 | 175 - 213 | 350 - 425 |
| 7⁄8 | 9 | 39,000 | 47,000 | 284 - 343 | 569 - 685 |
| 1 | 8 | 51,000 | 61,000 | 425 - 508 | 850 - 1,017 |
| 11⁄8 | 7 | 64,000 | 77,000 | 600 - 722 | 1,200 - 1,444 |
| 11⁄4 | 7 | 81,000 | 98,000 | 844 - 1,021 | 1,687 - 2,042 |
| 13⁄8 | 6 | 97,000 | 117,000 | 1,111 - 1,341 | 2,223 - 2,681 |
| 11⁄2 | 6 | 118,000 | 143,000 | 1,475 - 1,788 | 2,950 - 3,575 |