Material strength for specialty fasteners and long length fasteners from Elgin Fastener Group, as well as machine screws, is listed below by grade, type and class and is separated into 130,000 psi and 150,000.
Material Strength – 130,000 psi Class 9.8 |
||||||||
Size | Dia. | StressArea | TensileStr.Lbs | ProofLoad Str.Lbs | DryPartsK=.2 | LubricatedParts K=.15 | ||
MinBreak Str. (in/lbs) | MaxTorque Value (in/lbs) | MinBreak Str, (in/lbs) | MaxTorqueValue (in/lbs) | |||||
8-32 | 0.1640 | 0.01400 | 1,820 | 1,274 | 44.8 | 31.3 | 33.6 | 23.5 |
10-24 | 0.1900 | 0.01750 | 2,275 | 1,593 | 64.8 | 45.4 | 48.6 | 34.0 |
10-32 | 0.1900 | 0.02000 | 2,600 | 1,820 | 74.1 | 51.9 | 55.6 | 38.9 |
1/4-20 | 0.2500 | 0.03180 | 4,134 | 2,894 | 155.0 | 108.5 | 116.3 | 81.4 |
1/4-28 | 0.2500 | 0.03637 | 4,728 | 3,310 | 177.3 | 124.1 | 133.0 | 93.1 |
5/16-18 | 0.3125 | 0.05240 | 6,812 | 4,768 | 319.3 | 223.5 | 239.5 | 167.6 |
5/16-24 | 0.3125 | 0.05800 | 7,540 | 5,278 | 353.4 | 247.4 | 265.1 | 185.6 |
3/8-16 | 0.3750 | 0.07750 | 10,075 | 7,053 | 566.7 | 396.7 | 425.0 | 297.5 |
3/8-24 | 0.3750 | 0.08780 | 11,414 | 7,990 | 642.0 | 449.4 | 481.5 | 337.1 |
7/16-14 | 0.4375 | 0.10630 | 13,819 | 9,673 | 906.9 | 634.8 | 680.2 | 476.1 |
7/16-20 | 0.4375 | 0.11870 | 15,431 | 10,802 | 1012.7 | 708.9 | 759.5 | 531.6 |
M3.5×0.6 | 0.1380 | 0.01051 | 1,366 | 956 | 28.3 | 19.8 | 21.2 | 14.8 |
M4x0.7 | 0.1575 | 0.01349 | 1,754 | 1,228 | 41.4 | 29.0 | 31.1 | 21.8 |
M5x0.8 | 0.1970 | 0.02201 | 2,861 | 2,003 | 84.6 | 59.2 | 63.4 | 44.4 |
M6x1.0 | 0.2360 | 0.03116 | 4,050 | 2,835 | 143.4 | 100.4 | 107.5 | 75.3 |
M7x1.0 | 0.2755 | 0.04473 | ,5815 | 4,071 | 240.3 | 168.2 | 180.2 | 126.2 |
M8x1.25 | 0.3150 | 0.05673 | 7,375 | 5,162 | 348.5 | 243.9 | 261.3 | 182.9 |
M10x1.5 | 0.3940 | 0.08990 | 11,687 | 8,181 | 690.7 | 483.5 | 518.0 | 362.6 |
M12x1.75 | 0.4720 | 0.13067 | 16,987 | 11,891 | 1202.7 | 841.9 | 902.0 | 631.4 |
Material Strength – 150,000 psi Class 10.9 or Grade 8 | ||||||||
Size | Dia. | StressArea | TensileStr.Lbs | ProofLoad Str.Lbs | DryPartsK=.2 | LubricatedParts K=.15 | ||
MinBreak Str. (in/lbs) | MaxTorque Value (in/lbs) | MinBreak Str, (in/lbs) | MaxTorqueValue (in/lbs) | |||||
8-32 | 0.1640 | 0.01400 | 2,100 | 1,680 | 51.7 | 41.3 | 38.7 | 31.0 |
10-24 | 0.1900 | 0.01750 | 2,625 | 2,100 | 74.8 | 59.9 | 56.1 | 44.9 |
10-32 | 0.1900 | 0.02000 | 3,000 | 2,400 | 85.5 | 68.4 | 64.1 | 51.3 |
1/4-20 | 0.2500 | 0.03180 | 4,770 | 3,816 | 178.9 | 143.1 | 134.2 | 107.3 |
1/4-28 | 0.2500 | 0.03637 | 5,456 | 4,364 | 204.6 | 163.7 | 153.4 | 122.7 |
5/16-18 | 0.3125 | 0.05240 | 7,860 | 6,288 | 368.4 | 294.8 | 276.3 | 221.1 |
5/16-24 | 0.3125 | 0.05800 | 8,700 | 6,960 | 407.8 | 326.3 | 305.9 | 244.7 |
3/8-16 | 0.3750 | 0.07750 | 11,625 | 9,300 | 653.9 | 523.1 | 490.4 | 392.3 |
3/8-24 | 0.3750 | 0.08780 | 13,170 | 10,536 | 740.8 | 592.7 | 555.6 | 444.5 |
7/16-14 | 0.4375 | 0.10630 | 15,945 | 12,756 | 1046.4 | 837.1 | 784.8 | 627.8 |
7/16-20 | 0.4375 | 0.11870 | 17,805 | 14,244 | 1168.5 | 934.8 | 876.3 | 701.1 |
M3.5×0.6 | 0.1380 | 0.01051 | 1,577 | 1,261 | 32.6 | 26.1 | 24.5 | 19.6 |
M4x0.7 | 0.1575 | 0.01349 | 2,024 | 1,619 | 47.8 | 38.2 | 35.9 | 28.7 |
M5x0.8 | 0.1970 | 0.02201 | 3,302 | 2,641 | 97.6 | 78.0 | 73.2 | 58.5 |
M6x1.0 | 0.2360 | 0.03116 | 4,673 | 3,739 | 165.4 | 132.3 | 124.1 | 99.3 |
M7x1.0 | 0.2755 | 0.04473 | 6,710 | 5,368 | 277.3 | 221.8 | 208.0 | 166.4 |
M8x1.25 | 0.3150 | 0.05673 | 8,510 | 6,808 | 402.1 | 321.7 | 301.6 | 241.2 |
M10x1.5 | 0.3940 | 0.08990 | 13,485 | 10,788 | 797.0 | 637.6 | 597.7 | 478.2 |
M12x1.75 | 0.4720 | 0.13067 | 19,601 | 15,680 | 1387.7 | 1110.2 | 1040.8 | 832.6 |