Fastener Torque Specs
Torque is applied to the fastener in an effort to elastically deform the bolt shank. In the case of bolts and nuts, this elastic deformation between the bolt head and the nut is critical in order to create tension or clamping force to hold the joint together. The amount of torque applied is a function of the frictional forces and bolt diameter and is typically calculated utilizing a clamp load equaling 60-70% of the yield. Below are guides that show these calculations for a variety of materials, bolts sizes and thread counts over a range of frictional conditions.
NOTE: The actual clamp load is dependent on a variety of factors including the material, condition of the fasteners, surface finish, lubrication etc. The percentages provided are illustrative of what one might expect to see should only be used as a general guide.
* Yield strength used to calculate torque values are based on the typical yield. *
Specialty Metal Torque Specs
17-4PH Torque Specs
A-286 Torque Specs
AL-6XN Torque Specs
Alloy 20 Torque Specs
Alloy 330 Torque Specs
Duplex 2205 & 2507 Torque Specs
Hastelloy Torque Specs
Incoloy 800, 800H, 800HT, 825 & 925
Inconel 600, 625 & 718 Torque Specs
Molybdenum & TMZ Torque Specs
Monel 400 & K500 Torque Specs
MP35N Torque Specs
Tantalum CP & 2.5%W Torque Specs
Titanium Gr2 & Gr5 Torque Specs
Waspaloy Torque Specs
Zirconium 702 & 705 Torque Specs
17-4 PH Torque Specification: H900 & H1150
| 17-4PH (H900) Bolt / Screw Torque Chart |
|
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb (Lubricated) |
| Diameter (in) | (Dry) |
| 1/4" | 20 | 17.1 | 12.7 |
| 28 | 19.5 | 14.5 |
| 5/16’’ | 18 | 35 | 26.3 |
| 24 | 38.8 | 28.2 |
| 3/8" | 16 | 62.1 | 46.7 |
| 24 | 70.4 | 52.7 |
| 7/16’’ | 14 | 93.3 | 74.6 |
| 20 | 111 | 83.3 |
| 1/2" | 13 | 151.6 | 113.6 |
| 20 | 170.5 | 128.1 |
| 9/16’’ | 12 | 218.6 | 164.1 |
| 18 | 243.3 | 183 |
| 5/8" | 11 | 301.8 | 226.4 |
| 18 | 341.8 | 256.4 |
| 3/4" | 10 | 537 | 402 |
| 16 | 597 | 448 |
| 7/8" | 9 | 863 | 648 |
| 14 | 953 | 714 |
| 1" | 8 | 1295 | 971 |
| 14 | 1452 | 1090 |
| 1-1/4" | 7 | 2254 | 1&89 |
| 12 | 2435 | 1870 |
| 1-1/2" | 5 | 3321 | 2940 |
| 12 | 4412 | 3308 |
| * Calculated from a Yield Strength of 185ksi |
| 17-4PH (H1150) Bolt / Screw Torque Chart |
|
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb (Lubricated] |
| Diameter (in) | (Dry) |
| 1/4" | 20 | 11.5 | 8.6 |
| 28 | 13.2 | 9.8 |
| 5/16’’ | 18 | 23.6 | 17.8 |
| 24 | 26.2 | 19.7 |
| 3/8" | 16 | 42 | 31.5 |
| 24 | 47.6 | 35.6 |
| 7/16’’ | 14 | 67.1 | 50.4 |
| 20 | 75 | 56.3 |
| 1/2" | 13 | 102.4 | 76.8 |
| 20 | 115.5 | 86.5 |
| 9/16’’ | 12 | 147.7 | 110.9 |
| 18 | 164.8 | 123.6 |
| 5/8" | 11 | 203.9 | 153 |
| 18 | 231 | 173.2 |
| 3/4" | 10 | 363 | 272 |
| 16 | 404 | 303 |
| 7/8" | 9 | 5S3 | 438 |
| 14 | 644 | 482 |
| 1" | 8 | 875 | 656 |
| 14 | 381 | 736 |
| 1-1/4" | 7 | 1523 | 1141 |
| 12 | 1686 | 1264 |
| 1-1/2" | 6 | 2649 | 1986 |
| 12 | 2981 | 2235 |
| * Calculated from a Yield Strength of 125ksi |
A-286 Torque Specification
| A-286 Bolt / Screw Torque Chart |
|
| Nominal | Threads/im | Torque ft-lb | Torque ft-lb (Lubricated) |
| Diameter (in) | [Dry) |
| 1/4" | 20 | 9.4 | 7 |
| 28 | 10.8 | 8 |
| 5/16’’ | 18 | 19.3 | 14.5 |
| 24 | 21.4 | 16.1 |
| 3/8" | 16 | 34.3 | 25.7 |
| 24 | 38.8 | 29 |
| 7/16’’ | 14 | 54.8 | 41.1 |
| 20 | 61.2 | 45.9 |
| 1/2" | 13 | 83.6 | 62.6 |
| 20 | 94.2 | 70.6 |
| 9/16’’ | 12 | 120.5 | 90.5 |
| 18 | 134.5 | 100.9 |
| 5/8" | 11 | 166.4 | 124.8 |
| 18 | 188.5 | 141.4 |
| 3/4" | 10 | 296 | 222 |
| 16 | 329 | 247 |
| 7/8" | 9 | 476 | 357 |
| 14 | 526 | 394 |
| 1" | 8 | 714 | 536 |
| 14 | 800 | 601 |
| 1-1/4" | 7 | 1243 | 931 |
| 12 | 1376 | 1031 |
| 1-1/2" | 5 | 2162 | 1621 |
| 12 | 2432 | 1824 |
| *Calculated from a Yield Strength of 102ksi |
AL-6XN Torque Specification
| AL-6XN Bolt / Screw Torque Chart |
|
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb (Lubricated] |
| Diameter (in) | (Dry) |
| 1/4" | 20 | 4.9 | 3.6 |
| 28 | 5.6 | 4.1 |
| 5/16’’ | 18 | 10 | 7.5 |
| 24 | 11.1 | 8.4 |
| 3/8" | 16 | 17.8 | 13.4 |
| 24 | 20.2 | 15.1 |
| 7/16’’ | 14 | 28.5 | 21.4 |
| 20 | 31.8 | 23.9 |
| 1/2" | 13 | 43.4 | 32.5 |
| 20 | 49 | 36.7 |
| 9/16’’ | 12 | 62.6 | 47 |
| 18 | 69.9 | 52.4 |
| 5/8" | 11 | 86.5 | 64.9 |
| 18 | 97.3 | 73.5 |
| 3/4" | 10 | 154 | 115 |
| 16 | 171 | 128 |
| 7/8" | 9 | 247 | 186 |
| 14 | 273 | 205 |
| 1" | 8 | 371 | 278 |
| 14 | 416 | 312 |
| 1-1/4" | 7 | 646 | 484 |
| 12 | 715 | 536 |
| 1-1/2" | 6 | 1123 | 842 |
| 12 | 1264 | 948 |
| * Calculated from a Yield Strength of 53ksi |
Alloy 20 Torque Specification
| Alloy 20 Bolt / Screw Torque Chart |
| Nominal | Threads/in | Torque ft-lb (Dry) | Torque ft-lb (Lubricated) |
| Diameter (in) |
| 1/4" | 20 | 3.2 | 2.4 |
| 28 | 3.7 | 2.7 |
| 5/16’’ | 18 | 6.6 | 5 |
| 24 | 7.3 | 5.5 |
| 3/8" | 16 | 11.8 | 8.8 |
| 24 | 13.3 | 10 |
| 7/16’’ | 14 | 18.8 | 14.1 |
| 20 | 21 | 15.8 |
| 1/2" | 13 | 28.7 | 21.5 |
| 20 | 32.3 | 24.2 |
| 9/16’’ | 12 | 41.4 | 31 |
| 18 | 46.1 | 34.6 |
| 5/8" | 11 | 57.1 | 42.8 |
| 18 | 64.7 | 48.5 |
| 3/4" | 10 | 102 | 76 |
| 16 | 113 | 85 |
| 7/8" | 9 | 163 | 123 |
| 14 | 180 | 135 |
| 1" | 8 | 245 | 184 |
| 14 | 275 | 206 |
| 1-1/4" | 7 | 426 | 320 |
| 12 | 472 | 354 |
| 1-1/2" | 6 | 742 | 556 |
| 12 | 835 | 626 |
| * Calculated from a Yield Strength of 35ksi |
Alloy 330 Torque Specification
| Alloy 330 Bolt / Screw Torque Chart |
|
| Nominal | Threads/in | Torque ft-lb (Dry) | Torque ft-lb (Lubricated) |
| Diameter (in) |
| 1/4" | 20 | 3.4 | 2.5 |
| 28 | 3.3 | 2.9 |
| 5/16’’ | 18 | 7 | 5.3 |
| 24 | 7.8 | 5.8 |
| 3/8" | 16 | 12.4 | 9.3 |
| 24 | 14.1 | 10.5 |
| 7/16’’ | 14 | 19.9 | 14.9 |
| 20 | 22.2 | 16.7 |
| 1/2" | 13 | 30.3 | 22.7 |
| 20 | 34.2 | 25.6 |
| 9/16’’ | 12 | 43.7 | 32.8 |
| 18 | 48.8 | 36.6 |
| 5/8" | 11 | 60.4 | 45.3 |
| 18 | 68.4 | 51.3 |
| 3/4" | 10 | 107 | 80 |
| 16 | 119 | 90 |
| 7/8" | 9 | 173 | 130 |
| 14 | 131 | 143 |
| 1" | 8 | 259 | 194 |
| 14 | 290 | 218 |
| 1-1/4" | 7 | 451 | 338 |
| 12 | 433 | 374 |
| 1-1/2" | 6 | 784 | 588 |
| 12 | 382 | 662 |
| * Calculated from a Yield Strength of 37ksi |
Duplex 2205 & 2507 Torque Specification
| Duplex 2205 Bolt / Screw Torque Chart |
|
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb [Lubricated] |
| Diameter (in) | (Dry) |
| 1/4" | 20 | 6.5 | 4.8 |
| 28 | 7.4 | 5.5 |
| 5/16’’ | 18 | 13.2 | 10 |
| 24 | 14.7 | 11 |
| 3/8" | 16 | 23.5 | 17.7 |
| 24 | 26.5 | 19.3 |
| 7/16’’ | 14 | 37.6 | 28.2 |
| 20 | 42 | 31.5 |
| 1/2" | 13 | 57.4 | 43 |
| 20 | 64.7 | 48.5 |
| 9/16’’ | 12 | 82.7 | 62.1 |
| 18 | 32.3 | 69.2 |
| 5/8" | 11 | 114.2 | 85.7 |
| 18 | 123.3 | 37 |
| 3/4" | 10 | 203 | 152 |
| 16 | 226 | 170 |
| 7/8" | 9 | 326 | 245 |
| 14 | 361 | 270 |
| 1" | 8 | 490 | 358 |
| 14 | 549 | 412 |
| 1-1/4" | 7 | 853 | 638 |
| 12 | 944 | 708 |
| 1-1/2" | 6 | 1484 | 1112 |
| 12 | 1669 | 1252 |
| *Calculated from a Yield Strength of 70ksi |
| Super Duplex 2507 Bolt / Screw Torque Chart |
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb (Lubricated) |
| Diameter (in) | (Dry) |
| 1/4" | 20 | 7.4 | 5.5 |
| 28 | 8.4 | 6.3 |
| 5/16’’ | 18 | 15.1 | 11.4 |
| 24 | 16.8 | 12.6 |
| 3/8" | 16 | 26.9 | 20.2 |
| 24 | 30.4 | 22.8 |
| 7/16’’ | 14 | 43 | 32.3 |
| 20 | 48 | 36 |
| 1/2" | 13 | 65. 6 | 49.1 |
| 20 | 73.3 | 55.4 |
| 9/16’’ | 12 | 94.5 | 71 |
| 18 | 105.5 | 79.1 |
| 5/8" | 11 | 130.5 | 97.8 |
| 18 | 147.8 | 110.3 |
| 3/4" | 10 | 232 | 174 |
| 16 | 258 | 194 |
| 7/8" | 9 | 373 | 280 |
| 14 | 412 | 309 |
| 1" | 8 | 560 | 420 |
| 14 | 628 | 471 |
| 1-1/4" | 7 | 375 | 730 |
| 12 | 1079 | 809 |
| 1-1/2" | 6 | 1696 | 1271 |
| 12 | 1908 | 1430 |
| * Calculated from a Yield Strength of 80ksi |
Hastelloy C276 Torque Specifications
| HASTELLOY C276 HEX HEAD BOLT TORQUE CHART |
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb (Lubricated) |
| Diameter (in) | (Dry) |
| 1/4" | 20 | 4.5 | 3.4 |
| 28 | 5.2 | 3.8 |
| 5/16’’ | 18 | 9.3 | 7 |
| 24 | 10.3 | 7.7 |
| 3/8" | 16 | 16.5 | 12.4 |
| 24 | 18.6 | 14 |
| 7/16’’ | 14 | 26.3 | 19.8 |
| 20 | 29.4 | 22.1 |
| 1/2" | 13 | 40.2 | 30.1 |
| 20 | 45.3 | 33.9 |
| 9/16’’ | 12 | 57.3 | 43.5 |
| 18 | 64.6 | 48.5 |
| 5/8" | 11 | 79.9 | 60 |
| 18 | 90.5 | 57.9 |
| 3/4" | 10 | 142 | 107 |
| 16 | 158 | 119 |
| 7/8" | 9 | 228 | 172 |
| 14 | 252 | 189 |
| 1" | 8 | 343 | 257 |
| 14 | 385 | 289 |
| 1-1/4" | 7 | 597 | 447 |
| 12 | 661 | 495 |
| 1-1/2" | 6 | 1033 | 113 |
| 12 | 1169 | 876 |
| *Calculated from a Yield Strength of 49ksi |
Incoloy Torque Specifications
| Incoloy 800, 800H, 800HT Bolt / Screw Torque Chart |
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb (Lubricated) |
| Diameter (in) | (Dry) |
| 1/4" | 20 | 3.3 | 2.5 |
| 28 | 3.8 | 2.8 |
| 5/16’’ | 18 | 6.8 | 5.2 |
| 24 | 7.6 | 5.7 |
| 3/8" | 16 | 12.2 | 3.1 |
| 24 | 13.8 | 10.3 |
| 7/16’’ | 14 | 13.4 | 14.6 |
| 20 | 21.7 | 16.3 |
| 1/2" | 13 | 29.7 | 22.2 |
| 20 | 33.4 | 25.1 |
| 9/16’’ | 12 | 42.8 | 32.1 |
| 18 | 47.7 | 35.8 |
| 5/8" | 11 | 53.1 | 44.3 |
| 18 | 66.3 | 50.2 |
| 3/4" | 10 | 105 | 79 |
| 16 | 117 | E8 |
| 7/8" | 9 | 163 | 127 |
| 14 | 187 | 140 |
| 1" | 8 | 253 | 190 |
| 14 | 284 | 213 |
| 1-1/4" | 7 | 441 | 331 |
| 12 | 488 | 366 |
| 1-1/2" | 6 | 767 | 575 |
| 12 | 863 | 647 |
| *Calculated from a Yield Strength of 36ksi |
| Incoloy 825 Bolt / Screw Torque Chart |
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb (Lubricated) |
| Diameter (in) | (Dry) |
| 1/4" | 20 | 4.3 | 3.2 |
| 28 | 5 | 3.7 |
| 5/16’’ | 18 | 8.9 | 6.7 |
| 24 | 9.9 | 7.4 |
| 3/8" | 16 | 15.8 | 11.9 |
| 24 | 17.9 | 13.4 |
| 7/16’’ | 14 | 25.2 | 19 |
| 20 | 28.2 | 21.2 |
| 1/2" | 13 | 38.5 | 28.3 |
| 20 | 43.4 | 32.5 |
| 9/16’’ | 12 | 55.5 | 41.7 |
| 18 | 62 | 46.5 |
| 5/8" | 11 | 76.7 | 57.5 |
| 18 | 86.8 | 65.1 |
| 3/4" | 10 | 136 | 102 |
| 16 | 152 | 114 |
| 7/8" | 9 | 219 | 165 |
| 14 | 242 | 181 |
| 1" | 8 | 328 | 247 |
| 14 | 369 | 277 |
| 1-1/4" | 7 | 573 | 429 |
| 12 | 634 | 475 |
| 1-1/2" | 5 | 336 | 747 |
| 12 | 1121 | 840 |
| *Calculated from a Yield Strength of 47ksi |
| Incoloy 925 Bolt / Screw Torque Chart |
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb (Lubricated) |
| Diameter (in) | (Dry) |
| 1/4" | 20 | 11.1 | 8.2 |
| 28 | 12.7 | 3.4 |
| 5/16’’ | 18 | 22.7 | 17.1 |
| 24 | 25.2 | 18.9 |
| 3/8" | 16 | 40.3 | 30.3 |
| 24 | 45.7 | 34.2 |
| 7/16’’ | 14 | 64.4 | 48.4 |
| 20 | 72 | 54 |
| 1/2" | 13 | 98.3 | 73.7 |
| 20 | 110.3 | 83.1 |
| 9/16’’ | 12 | 141.8 | 106.4 |
| 18 | 158.2 | 118.7 |
| 5/8" | 11 | 185.8 | 146.9 |
| 18 | 221.7 | 166.3 |
| 3/4" | 10 | 348 | 261 |
| 16 | 387 | 231 |
| 7/8" | 3 | 560 | 420 |
| 14 | 618 | 463 |
| 1" | 8 | 840 | 630 |
| 14 | 942 | 707 |
| 1-1/4" | 7 | 1462 | 1096 |
| 12 | 1619 | 1213 |
| 1-1/2" | 6 | 2543 | 1907 |
| 12 | 2862 | 2146 |
| Calculated from a Yield Strength of 120ksi |
Inconel 600, 625 & 718 Torque Specifications
| Inconel 600 Bolt / Screw Torque Chart |
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb (Lubricated) |
| Diameter (in) | (Dry) |
| 1/4" | 20 | 3.4 | 2.5 |
| 28 | 3.3 | 2.8 |
| 5/16’’ | 18 | 7 | 5.3 |
| 24 | 7.8 | 5.8 |
| 3/8" | 16 | 12.4 | 9.3 |
| 24 | 14.1 | 10.5 |
| 7/16’’ | 14 | 19.9 | 14.9 |
| 20 | 22.2 | 16.7 |
| 1/2" | 13 | 30.3 | 22.7 |
| 20 | 34.2 | 25.6 |
| 9/16’’ | 12 | 43.7 | 32.8 |
| 18 | 48.8 | 36.6 |
| 5/8" | 11 | 60.4 | 45.3 |
| 18 | 68.4 | 51.3 |
| 3/4" | 10 | 107 | 80 |
| 16 | 119 | 90 |
| 7/8" | 9 | 173 | 130 |
| 14 | 191 | 143 |
| 1" | 8 | 259 | 134 |
| 14 | 290 | 218 |
| 1-1/4" | 7 | 451 | 338 |
| 12 | 493 | 374 |
| 1-1/2" | 6 | 784 | 588 |
| 12 | 882 | 662 |
| Calculated from a Yield Strength of 37ksi |
| Inconel 625 Bolt / Screw Torque Chart |
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb (Lubricated) |
| Diameter (in) | (Dry) |
| 1/4" | 20 | 7.8 | 5.8 |
| 28 | 8.9 | 6.6 |
| 5/16’’ | 18 | 15.9 | 12 |
| 24 | 17.6 | 13.2 |
| 3/8" | 16 | 28.2 | 21.2 |
| 24 | 32 | 23.9 |
| 7/16’’ | 14 | 45.1 | 333 |
| 20 | 50.4 | 37.8 |
| 1/2" | 13 | 68.8 | 51.6 |
| 20 | 77.6 | 58.2 |
| 9/16’’ | 12 | 99.2 | 74.5 |
| 18 | 110.8 | 83.1 |
| 5/8" | 11 | 137 | 102.8 |
| 18 | 155.2 | 116.4 |
| 3/4" | 10 | 244 | 183 |
| 16 | 271 | 204 |
| 7/8" | 9 | 382 | 294 |
| 14 | 433 | 324 |
| 1" | 8 | 588 | 441 |
| 14 | 659 | 495 |
| 1-1/4" | 7 | 1024 | 767 |
| 12 | 1133 | 849 |
| 1-1/2" | 6 | 1780 | 1335 |
| 12 | 2003 | 1502 |
| *Calculated from a Yield Strength of 84ksi |
| Inconel 718 Bolt / Screw Torque Chart |
| Nominal | Threads/in | Torque ft-lb (Dry) | Torque ft-lb (Lubricated) |
| Diameter (in) |
| 1/4" | 20 | 16.2 | 12 |
| 28 | 18.5 | 13.7 |
| 5/16’’ | 18 | 33.1 | 24.9 |
| 24 | 36.7 | 27.6 |
| 3/8" | 16 | 58.8 | 44.1 |
| 24 | 66.6 | 49.8 |
| 7/16’’ | 14 | 94 | 70.6 |
| 20 | 105 | 78.8 |
| 1/2" | 13 | 143.4 | 107.5 |
| 20 | 161.7 | 121.2 |
| 9/16’’ | 12 | 206.8 | 155.2 |
| 18 | 230.7 | 173.1 |
| 5/8" | 11 | 285.5 | 214.2 |
| 18 | 323.4 | 242.5 |
| 3/4" | 10 | 508 | 380 |
| 16 | 565 | 424 |
| 7/8" | 9 | 816 | 613 |
| 14 | 902 | 675 |
| 1" | 8 | 1225 | 913 |
| 14 | 1373 | 1031 |
| 1-1/4" | 7 | 2132 | 1538 |
| 12 | 2361 | 1769 |
| 1-1/2" | 6 | 3708 | 2781 |
| 12 | 4173 | 3129 |
| *Calculated from a Yield Strength of 175ksi |
Molybdenum Torque Specifications
| Molybdenum Bolt / Screw Torque Chart |
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb (Lubricated) |
| Diameter (in) | (Dry) |
| 1/4" | 20 | 8.3 | 6.2 |
| 28 | 9.5 | 7 |
| 5/16’’ | 18 | 17 | 12.8 |
| 24 | 18.9 | 14.2 |
| 3/8" | 16 | 30.2 | 22.7 |
| 24 | 34.2 | 25.6 |
| 7/16’’ | 14 | 48.3 | 36.3 |
| 20 | 54 | 40.5 |
| 1/2" | 13 | 73.8 | 55 J |
| 20 | 83.2 | 62.3 |
| 9/16’’ | 12 | 106.3 | 73.8 |
| 18 | 118.7 | 89 |
| 5/8" | 11 | 146.8 | 110.2 |
| 18 | 166.3 | 124.7 |
| 3/4" | 10 | 261 | 196 |
| 16 | 291 | 218 |
| 7/8" | 9 | 420 | 315 |
| 14 | 464 | 347 |
| 1" | 8 | 630 | 473 |
| 14 | 706 | 530 |
| 1-1/4" | 7 | 1097 | 822 |
| 12 | 1214 | 910 |
| 1-1/2" | 6 | 1908 | 1430 |
| 12 | 2146 | 1609 |
| *Calculated from a Yield Strength of 90ksi |
Molybdenum TZM Torque Specification
| Molybdenum TZM Bolt / Screw Torque Chart |
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb (Lubricated) |
| Diameter (in) | (Dry) |
| 1/4" | 20 | 12 | 8.9 |
| 28 | 13.7 | 10.2 |
| 5/16’’ | 18 | 24.6 | 18.5 |
| 24 | 27.3 | 20.5 |
| 3/8" | 16 | 43.7 | 32.8 |
| 24 | 49.5 | 37 |
| 7/16’’ | 14 | 69.8 | 52.4 |
| 20 | 78 | 58.5 |
| 1/2" | 13 | 106.5 | 79.8 |
| 20 | 120.1 | 30 |
| 9/16’’ | 12 | 153.6 | 115.3 |
| 18 | 171.4 | 128.6 |
| 5/8" | 11 | 212.1 | 153.1 |
| 18 | 240.2 | 180.2 |
| 3/4" | 10 | 377 | 283 |
| 16 | 420 | 315 |
| 7/8" | 9 | 606 | 455 |
| 14 | 670 | 502 |
| 1" | 8 | 910 | &83 |
| 14 | 1020 | 756 |
| 1-1/4" | 7 | 1584 | 1187 |
| 12 | 1754 | 1314 |
| 1-1/2" | 6 | 2755 | 2066 |
| 12 | 3100 | 2324 |
| * Calculated from a Yield Strength of 130ksi |
Monel 400 and K500 Torque Specifications
| Monel 400 Bolt / Screw Torque Chart |
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb (Lubricated) |
| Diameter (in) | (Dry) |
| 1/4" | 20 | 4.2 | 3.1 |
| 28 | 4.7 | 3.5 |
| 5/16’’ | 18 | 8.5 | 6.4 |
| 24 | 9.4 | 7.1 |
| 3/8" | 16 | 15.1 | 11.3 |
| 24 | 17.1 | 12.8 |
| 7/16’’ | 14 | 24.2 | 18.1 |
| 20 | 27 | 20.3 |
| 1/2" | 13 | 36.9 | 27.6 |
|
|
|
| 9/16’’ | 12 | 53.2 | 39.9 |
| 18 | 59.3 | 44.5 |
| 5/8" | 11 | 73.4 | 55.1 |
| 18 | 83.2 | 62.4 |
| 3/4" | 10 | 131 | 98 |
| 16 | 145 | 109 |
| 7/8" | 9 | 210 | 158 |
| 14 | 232 | 174 |
| 1" | 8 | 315 | 236 |
| 14 | 353 | 265 |
| 1-1/4" | 7 | 548 | 411 |
| 12 | 607 | 455 |
| 1-1/2" | 6 | 954 | 715 |
| 12 | 1073 | 805 |
| *Calculated from a Yield Strength of 45ksi |
| Monel K500 Bolt / Screw Torque Chart |
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb (Lubricated) |
| Diameter (in) | (Dry) |
| 1/4" | 20 | 10.2 | 7.5 |
| 28 | 11.6 | 8.6 |
| 5/16" | 18 | 20.8 | 15.7 |
| 24 | 23.1 | 17.3 |
| 3/8" | 16 | 36.9 | 27.7 |
| 24 | 41.8 | 31.3 |
| 7/16" | 14 | 53.1 | 44.4 |
| 20 | 66 | 49.5 |
| 1/2" | 13 | 30.2 | 67.6 |
| 9/16" | 12 | 130 | 97.6 |
| 18 | 145 | 108.8 |
| 5/8" | 11 | 179.5 | 134.6 |
| 18 | 203.3 | 152.4 |
| 3/4" | 10 | 319 | 239 |
| 16 | 355 | 267 |
| 7/8" | 9 | 513 | 385 |
| 14 | 557 | 424 |
| 1" | 8 | 770 | 578 |
| 14 | 863 | 648 |
| 1-1/4" | 7 | 1340 | 1004 |
| 12 | 1484 | 1112 |
| 1-1/2" | 6 | 2332 | 1748 |
| 12 | 2623 | 1967 |
| *Calculated from a Yield Strength of 110ksi |
MP35N Torque Specifications
| MP35N Bolt / Screw Torque Chart |
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb (Lubricated) |
| Diameter (in) | (Dry) |
| 1/4" | 20 | 20 | 14.3 |
| 28 | 22.9 | 17 |
| 5/16" | 18 | 41 | 30.3 |
| 24 | 45.5 | 34.2 |
| 3/8" | 16 | 72.9 | 54.7 |
| 24 | 82.6 | 61.8 |
| 7/16" | 14 | 116.5 | 87.5 |
| 20 | 130.2 | 97.7 |
| 1/2" | 13 | 177.8 | 133.3 |
| 20 | 200.5 | 150.2 |
| 9/16" | 12 | 256.4 | 152.5 |
| 18 | 286.1 | 214.5 |
| 5/8" | 11 | 354 | 265.6 |
| 18 | 401 | 300.7 |
| 3/4" | 10 | 630 | 472 |
| 16 | 701 | 526 |
| 7/8" | 9 | 1012 | 760 |
| 14 | 1118 | 837 |
| l" | 8 | 1513 | 1139 |
| 14 | 1703 | 1278 |
| 1-1/4" | 7 | 2644 | 1981 |
| 12 | 2327 | 2154 |
| l-l/2" | 6 | 4599 | 3448 |
| 12 | 5175 | 3880 |
| * Calculated from a Yield Strength of 217ksi |
Tantalum CP & 2.5%W Torque Specifications
| Tantalum CP Bolt / Screw Torque Chart |
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb (Lubricated) |
| Diameter (in) | (Dry) |
| 1/4" | 20 | 2.3 | 1.7 |
| 28 | 2.6 | 2 |
| 5/16" | 18 | 4.7 | 3.6 |
| 24 | 5.2 | 3.9 |
| 3/8" | 16 | 8.4 | 6.3 |
| 24 | 9.5 | 7.1 |
| 7/16" | 14 | 13.4 | 10.1 |
| 20 | 15 | 11.3 |
| 1/2" | 13 | 20.5 | 15.4 |
| 20 | 23.1 | 17.3 |
| 9/16" | 12 | 29.5 | 22.2 |
| 18 | 33 | 24.7 |
| 5/8" | 11 | 40.8 | 30.6 |
| 18 | 46.2 | 34.6 |
| 3/4" | 10 | 73 | 54 |
| 16 | 81 | 61 |
| 7/8" | 9 | 117 | 88 |
| 14 | 123 | 36 |
| l" | 8 | 175 | 131 |
| 14 | 196 | 147 |
| 1-1/4" | 7 | 305 | 228 |
| 12 | 337 | 253 |
| l-l/2" | 5 | 530 | 397 |
| 12 | 596 | 447 |
| *Calculated from a Yield Strength of 25ksi |
| Tantalum 2.5%W Bolt / Screw Torque Chart |
| Nominal | Threads/in | Torque ft-lb (Dry) | Torque ft-lb (Lubricated) |
| Diameter (in) |
| 1/4" | 20 | 3.2 | 2.4 |
| 28 | 3.7 | 2.7 |
| 5/16" | 18 | 6.6 | 5 |
| 24 | 7.3 | 5.5 |
| 3/8" | 16 | 11.8 | 8.8 |
| 24 | 13.3 | 10 |
| 7/16" | 14 | 18.8 | 14.1 |
| 20 | 21 | 15.8 |
| 1/2" | 13 | 28.7 | 21.5 |
| 20 | 32.3 | 24.2 |
| 9/16" | 12 | 41.4 | 31 |
| 18 | 46.1 | 34.6 |
| 5/8" | 11 | 57.1 | 42.8 |
| 18 | 64.7 | 48.5 |
| 3/4" | 10 | 102 | 76 |
| 16 | 113 | 85 |
| 7/8" | 9 | 163 | 123 |
| 14 | 180 | 135 |
| l" | 8 | 245 | 184 |
| 14 | 275 | 206 |
| 1-1/4" | 7 | 426 | 320 |
| 12 | 472 | 354 |
| l-l/2" | 6 | 742 | 556 |
| 12 | 835 | 626 |
| * Calculated from a Yield Strength of 35ksi |
Titanium Gr2 & Gr5 Torque Specifications
| Titanium Grade 2 Bolt / Screw Torque Chart |
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb |
| Diameter (in) | (Dry) | (Lubricated) |
| 1/4" | 20 | 4.6 | 3.4 |
| 28 | 5.3 | 3.9 |
| 5/16" | 18 | 9.5 | 7.1 |
| 24 | 10.5 | 7.9 |
| 3/8" | 16 | 16.8 | 12.6 |
| 24 | 19 | 14.2 |
| 7/16" | 14 | 26.8 | 20.2 |
| 20 | 30 | 22.5 |
| 1/2" | 13 | 41 | 30.7 |
| 20 | 46.2 | 34.6 |
| 9/16" | 12 | 59.1 | 44.3 |
| 18 | 65.3 | 49.5 |
| 5/8" | 11 | 81.6 | 61.2 |
| 18 | 92.4 | 69.3 |
| 3/4" | 10 | 145 | 109 |
| 16 | 161 | 121 |
| 7/8" | 8 | 233 | 175 |
| 14 | 258 | 193 |
| l" | 8 | 350 | 263 |
| 14 | 382 | 295 |
| 1-1/4" | 7 | 603 | 457 |
| 12 | 674 | 505 |
| l-l/2" | 6 | 1060 | 795 |
| 12 | 1192 | 894 |
| *Calculated from a Yield Strength of50ksi |
| Titanium Grade 5 Bolt / Screw Torque Chart |
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb (Lubricated) |
| Diameter (in) | (Dry) |
| 1/4" | 20 | 11.8 | 8.8 |
| 28 | 13.5 | 10 |
| 5/16" | 18 | 24.2 | 18.2 |
| 24 | 25.9 | 20.2 |
| 3/8" | 16 | 43 | 32.3 |
| 24 | 48.7 | 36.5 |
| 7/16" | 14 | 68.7 | 51.6 |
| 20 | 75.8 | 57.6 |
| 1/2" | 13 | 104.9 | 78.6 |
| 20 | 118.3 | 88.6 |
| 9/16" | 12 | 151.2 | 113.5 |
| 18 | 168.8 | 125.6 |
| 5/8" | 11 | 208.8 | 156.7 |
| 18 | 236.5 | 177.4 |
| 3/4" | 10 | 371 | 273 |
| 16 | 413 | 310 |
| 7/8" | 9 | 597 | 448 |
| 14 | 659 | 494 |
| l" | 8 | 896 | 672 |
| 14 | 1005 | 754 |
| 1-1/4" | 7 | 1560 | 1169 |
| 12 | 1727 | 1294 |
| l-l/2" | 6 | 2713 | 2034 |
| 12 | 3053 | 2289 |
| Calculated from a Yield Strength of 128ksi |
Waspaloy Torque Specification
| Waspaloy Bolt / Screw Torque Chart |
| Nominal | Threads/in | Torque ft-lb (Dry) | Torque ft-lb (Lubricated) |
| Diameter (in) |
| 1/4" | 20 | 10.6 | 7.3 |
| 28 | 12.1 | 9 |
| 5/16" | 18 | 21.8 | 16.4 |
| 24 | 24.1 | 18.1 |
| 3/8" | 16 | 3S.6 | 29 |
| 24 | 43.8 | 32.8 |
| 7/16" | 14 | 61.8 | 46.4 |
| 20 | 63,0 | 51.8 |
| 1/2" | 13 | 34.3 | 70.6 |
| 20 | 106.3 | 79.6 |
| 9/16" | 12 | 135.9 | 102 |
| 18 | 151.6 | 113.8 |
| 5/8" | 11 | 187.6 | 140.8 |
| 18 | 212.5 | 159.4 |
| 3/4" | 10 | 334 | 250 |
| 16 | 371 | 279 |
| 7/8" | 9 | 536 | 403 |
| 14 | 593 | 444 |
| l" | 8 | 805 | 604 |
| 14 | 903 | 678 |
| 1-1/4" | 7 | 1401 | 1050 |
| 12 | 1551 | 1163 |
| l-l/2" | 6 | 2438 | 1828 |
| 12 | 2743 | 2056 |
| * Calculated from a Yield Strength of 115ksi |
Zirconium 702 & 705 Torque Specifications
| Zirconium 702 Bolt / Screw Torque Chart |
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb (Lubricated) |
| Diameter (in) | (Dry) |
| 1/4" | 20 | 4.3 | 3.2 |
| 28 | 5 | 3.7 |
| 5/16" | 18 | 8.9 | 6.7 |
| 24 | 9.9 | 7.4 |
| 3/8" | 16 | 15.8 | 11.9 |
| 24 | 17.9 | 13.4 |
| 7/16" | 14 | 25.2 | 19 |
| 20 | 28.2 | 21.2 |
| 1/2" | 13 | 38.5 | 28.9 |
| 20 | 43.4 | 32.5 |
| 9/16" | 12 | 55.5 | 41.7 |
| 18 | 62 | 46.5 |
| 5/8" | 11 | 76.7 | 57.5 |
| 18 | 86.8 | 65.1 |
| 3/4" | 10 | 136 | 102 |
| 16 | 152 | 114 |
| 7/8" | 9 | 219 | 165 |
| 14 | 242 | 181 |
| 1" | 8 | 329 | 247 |
| 14 | 369 | 277 |
| 1-1/4" | 7 | 573 | 428 |
| 12 | 634 | 475 |
| 1-1/2" | 6 | 996 | 747 |
| 12 | 1121 | 840 |
| *Calculated from a Yield Strength of 47ksi |
| Zirconium 705 Bolt / Screw Torque Chart |
| Nominal | Threads/in | Torque ft-lb | Torque ft-lb (Lubricated) |
| Diameter (in) | (Dry) |
| 1/4" | 20 | 6.7 | 5 |
| 28 | 7.7 | 5.7 |
| 5/16" | 18 | 13.8 | 10.4 |
| 24 | 15.3 | 11.5 |
| 3/8" | 16 | 24.5 | 18.4 |
| 24 | 27.8 | 20.8 |
| 7/16" | 14 | 39.2 | 29.4 |
| 20 | 43.8 | 32.9 |
| 1/2" | 13 | 59.8 | 44.8 |
| 20 | 67.4 | 50.5 |
| 9/15" | 12 | 86.3 | 64.7 |
| 18 | 96.2 | 72.2 |
| 5/8" | 11 | 119.1 | 89.3 |
| 18 | 134.9 | 101.2 |
| 3/4" | 10 | 212 | 159 |
| 16 | 236 | 177 |
| 7/8" | 9 | 340 | 256 |
| 14 | 376 | 282 |
| 1" | 8 | 511 | 383 |
| 14 | 573 | 430 |
| 1-1/4" | 7 | 889 | 667 |
| 12 | 985 | 738 |
| 1-1/2" | 6 | 1547 | 1160 |
| 12 | 1741 | 1305 |
| *Calculated from a Yield Strength of 73 ksi |
