Material strength for threaded fasteners and headed industrial fasteners from Elgin Fasteners Group is listed below by grade, type and class and separated into 60,000 psi, 75,000 psi and 120,000 psi.
Material Strength – 60,000 psi J82 60M or Grade 1 or Class 4.8
| Size | Dia. | StressArea | Tensile Str. Lbs | Proof Load Str. Lbs | DryPartsK=.2 | Lubricated Parts K=.15 | ||
| MinBreak Str. (in/lbs) | MaxTorque Value (in/lbs) | MinBreak Str, (in/lbs) | MaxTorque Value (in/lbs) | |||||
| 8-32 | 0.1640 | 0.01400 | 840 | 462 | 20.7 | 11.4 | 15.5 | 8.5 |
| 10-24 | 0.1900 | 0.01750 | 1,050 | 578 | 29.9 | 16.5 | 22.4 | 12.3 |
| 10-32 | 0.1900 | 0.02000 | 1,200 | 660 | 34.2 | 18.8 | 25.7 | 14.1 |
| 1/4-20 | 0.2500 | 0.03180 | 1,908 | 1,049 | 71.6 | 39.4 | 53.7 | 29.5 |
| 1/4-28 | 0.2500 | 0.03637 | 2,182 | 1,200 | 81.8 | 45.0 | 61.4 | 33.8 |
| 5/16-18 | 0.3125 | 0.05240 | 3,144 | 1,729 | 147.4 | 81.1 | 110.5 | 60.8 |
| 5/16-24 | 0.3125 | 0.05800 | 3,480 | 1,914 | 163.1 | 89.7 | 122.3 | 67.3 |
| 3/8-16 | 0.3750 | 0.07750 | 4,650 | 2,558 | 261.6 | 143.9 | 196.2 | 107.9 |
| 3/8-24 | 0.3750 | 0.08780 | 5,268 | 2,897 | 296.3 | 163.0 | 222.2 | 122.2 |
| 7/16-14 | 0.4375 | 0.10630 | 6,378 | 3,508 | 418.6 | 230.2 | 313.9 | 172.7 |
| 7/16-20 | 0.4375 | 0.11870 | 7,122 | 3,917 | 467.4 | 257.1 | 350.5 | 192.8 |
| M3.5×0.6 | 0.1380 | 0.01051 | 631 | 347 | 13.1 | 7.2 | 9.8 | 5.4 |
| M4x0.7 | 0.1575 | 0.01349 | 809 | 445 | 19.1 | 10.5 | 14.3 | 7.9 |
| M5x0.8 | 0.1970 | 0.02201 | 1,321 | 726 | 39.0 | 21.5 | 29.3 | 16.1 |
| M6x1.0 | 0.2360 | 0.03116 | 1,869 | 1,028 | 66.2 | 36.4 | 49.6 | 27.3 |
| M7x1.0 | 0.2755 | 0.04473 | 2,684 | 1,476 | 110.9 | 61.0 | 83.2 | 45.8 |
| M8x1.25 | 0.3150 | 0.05673 | 3,404 | 1,872 | 160.8 | 88.5 | 120.6 | 66.3 |
| M10x1.5 | 0.3940 | 0.08990 | 5,394 | 2,967 | 318.8 | 175.3 | 239.1 | 131.5 |
| M12x1.75 | 0.4720 | 0.13067 | 7,840 | 4,312 | 555.1 | 305.3 | 416.3 | 229.0 |
Material Strength – 75,000 psi Grade 2 or Class 5.8
| Size | Dia. | StressArea | Tensile Str. Lbs | Proof Load Str. Lbs | DryParts K=.2 | Lubricated Parts K=.15 | ||
| Min Break Str. (in/lbs) | Max Torque Value (in/lbs) | Min Break Str, (in/lbs) | Max Torque Value (in/lbs) | |||||
| 8.32 | 0.1640 | 0.01400 | 1,050 | 788 | 25.8 | 19.4 | 19.4 | 14.5 |
| 10-24 | 0.1900 | 0.01750 | 1,313 | 984 | 37.4 | 28.1 | 28.1 | 21.0 |
| 10-32 | 0.1900 | 0.02000 | 1,500 | 1,125 | 42.8 | 32.1 | 32.1 | 24.0 |
| 1/4-20 | 0.2500 | 0.03180 | 2,385 | 1,789 | 89.4 | 67.1 | 67.1 | 50.3 |
| 1/4-28 | 0.2500 | 0.03637 | 2,728 | 2,046 | 102.3 | 76.7 | 76.7 | 57.5 |
| 5/16-18 | 0.3125 | 0.05240 | 3,930 | 2,948 | 184.2 | 138.2 | 138.2 | 103.6 |
| 5/16-24 | 0.3125 | 0.05800 | 4,350 | 3,263 | 203.9 | 152.9 | 152.9 | 114.7 |
| 3/8-16 | 0.3750 | 0.07750 | 5,813 | 4,359 | 327.0 | 245.2 | 245.2 | 183.9 |
| 3/8-24 | 0.3750 | 0.08780 | 6,585 | 4,939 | 370.4 | 277.8 | 277.8 | 208.4 |
| 7/16-14 | 0.4375 | 0.10630 | 7,973 | 5,979 | 523.2 | 392.4 | 392.4 | 294.3 |
| 7/16-20 | 0.4375 | 0.11870 | 8,903 | 6,677 | 584.2 | 438.2 | 438.2 | 328.6 |
| M3.5×0.6 | 0.1380 | 0.01051 | 788 | 591 | 16.3 | 12.2 | 12.2 | 9.2 |
| M4x0.7 | 0.1575 | 0.01349 | 1,012 | 759 | 23.9 | 17.9 | 17.9 | 13.4 |
| M5x0.8 | 0.1970 | 0.02201 | 1,651 | 1,238 | 48.8 | 36.6 | 36.6 | 27.4 |
| M6x1.0 | 0.2360 | 0.03116 | 2,337 | 1,752 | 82.7 | 62.0 | 62.0 | 46.5 |
| M7x1.0 | 0.2755 | 0.04473 | 3,355 | 2,516 | 138.6 | 104.0 | 104.0 | 78.0 |
| M8x1.25 | 0.3150 | 0.05673 | 4,255 | 3,191 | 201.0 | 150.8 | 150.8 | 113.1 |
| M10x1.5 | 0.3940 | 0.08990 | 6,743 | 5,057 | 398.5 | 298.9 | 298.9 | 224.1 |
| M12x1.75 | 0.4720 | 0.13067 | 9,800 | 7,350 | 693.9 | 520.4 | 520.4 | 390.3 |
Material Strength – 120,000 psi J82 120M or Grade 5 or Grade 5.1 or J81 or J1237 Type 2 or Class 8.8
| Size | Dia. | StressArea | Tensile Str. Lbs | Proof Load Str. Lbs | DryParts K=.2 | Lubricated Parts K=.15 | ||
| Min Break Str. (in/lbs) | Max Torque Value (in/lbs) | Min Break Str, (in/lbs) | Max Torque Value (in/lbs) | |||||
| 8-32 | 0.1640 | 0.01400 | 1,680 | 1,176 | 41.3 | 28.9 | 31.0 | 21.7 |
| 10-24 | 0.1900 | 0.01750 | 2,100 | 1,470 | 59.9 | 41.9 | 44.9 | 31.4 |
| 10-32 | 0.1900 | 0.02000 | 2,400 | 1,680 | 68.4 | 47.9 | 51.3 | 35.9 |
| 1/4-20 | 0.2500 | 0.03180 | 3,816 | 2,671 | 143.1 | 100.2 | 107.3 | 75.1 |
| 1/4-28 | 0.2500 | 0.03637 | 4,364 | 3,055 | 163.7 | 114.6 | 122.7 | 85.9 |
| 5/16-18 | 0.3125 | 0.05240 | 6,288 | 4,402 | 294.8 | 206.3 | 221.1 | 154.7 |
| 5/16-24 | 0.3125 | 0.05800 | 6,960 | 4,872 | 326.3 | 228.4 | 244.7 | 171.3 |
| 3/8-16 | 0.3750 | 0.07750 | ,9300 | 6,510 | 523.1 | 366.2 | 392.3 | 274.6 |
| 3/8-24 | 0.3750 | 0.08780 | 10,536 | 7,375 | 592.7 | 414.9 | 444.5 | 311.1 |
| 7/16-14 | 0.4375 | 0.10630 | 12,756 | 8,929 | 837.1 | 586.0 | 627.8 | 439.5 |
| 7/16-20 | 0.4375 | 0.11870 | 14,244 | 9,971 | 934.8 | 654.3 | 701.1 | 490.8 |
| M3.5×0.6 | 0.1380 | 0.01051 | 1,261 | 883 | 26.1 | 18.3 | 19.6 | 13.7 |
| M4x0.7 | 0.1575 | 0.01349 | 1,619 | 1,133 | 38.2 | 26.8 | 28.7 | 20.1 |
| M5x0.8 | 0.1970 | 0.02201 | 2,641 | 1,849 | 78.0 | 54.6 | 58.5 | 41.0 |
| M6x1.0 | 0.2360 | 0.03116 | 3,739 | 2,617 | 132.3 | 92.6 | 99.3 | 69.5 |
| M7x1.0 | 0.2755 | 0.04473 | 5,368 | 3,758 | 221.8 | 155.3 | 166.4 | 116.5 |
| M8x1.25 | 0.3150 | 0.05673 | 6,808 | 4,765 | 321.7 | 225.2 | 241.2 | 168.9 |
| M10x1.5 | 0.3940 | 0.08990 | 10,788 | 7,552 | 637.6 | 446.3 | 478.2 | 334.7 |
| M12x1.75 | 0.4720 | 0.13067 | 15,680 | 10,976 | 1110.2 | 777.1 | 832.6 | 582.8 |