![Stainless Steel Screws Tensile Strength, Torque, Yield Strength, and Material Composition](https://www.machinemfg.com/wp-content/uploads/2023/10/Stainless-Steel-Screws-Tensile-Strength-Torque-Yield-Strength-and-Material-Composition.jpg)
Ever wondered what determines the breaking point of bolts and screws under torque? This article delves into the critical values of destructive torque for various grades of stainless steel and carbon steel fasteners. By understanding these thresholds, you’ll learn how to select the right bolts for your projects, ensuring safety and reliability. Dive in to explore the specifics and gain valuable insights for your next mechanical endeavor.
Thread | Destructive torque Tm (N.m) | ||
Performance grade | |||
50 | 70 | 80 | |
M1.6 | 0.15 | 0.2 | 0.24 |
M2 | 0.3 | 0.4 | 0.48 |
M2.5 | 0.6 | 0.9 | 0.96 |
M3 | 1.1 | 1.6 | 1.8 |
M4 | 2.7 | 3.8 | 4.3 |
M5 | 5.5 | 7.8 | 8.8 |
M6 | 9.3 | 13 | 15 |
M8 | 23 | 32 | 37 |
M10 | 46 | 65 | 74 |
M12 | 80 | 110 | 130 |
M16 | 210 | 290 | 330 |
The above standards are derived from GB3098.6-2000
Thread specification | Pitch mm | Minimum destructive torque (unit: N.M) | |||
8.8 grade | 9.8 grade | 10.9 grade | 12.9 grade | ||
M1 | 0.25 | 0.033 | 0.036 | 0.04 | 0.045 |
M1.2 | 0.25 | 0.075 | 0.082 | 0.092 | 0.1 |
M1.4 | 0.3 | 0.12 | 0.13 | 0.14 | 0.16 |
M1.6 | 0.35 | 0.16 | 0.18 | 0.2 | 0.22 |
M2 | 0.4 | 0.37 | 0.4 | 0.45 | 0.54 |
M2.5 | 0.45 | 0.82 | 0.9 | 1.0 | 1.1 |
M3 | 0.5 | 1.5 | 1.7 | 1.9 | 2.1 |
M3.5 | 0.6 | 2.4 | 2.7 | 3.0 | 3.3 |
M4 | 0.7 | 3.6 | 3.9 | 4.4 | 4.9 |
M5 | 0.8 | 7.6 | 8.3 | 9.3 | 10 |
M6 | 1 | 13 | 14 | 16 | 17 |
M7 | 1 | 23 | 25 | 28 | 31 |
M8 | 1.25 | 33 | 36 | 40 | 44 |
M8*1 | 1 | 38 | 42 | 46 | 52 |
M10 | 1.5 | 66 | 72 | 81 | 90 |
M10*1 | 1 | 84 | 92 | 102 | 114 |
M10*1.25 | 1.25 | 75 | 82 | 91 | 102 |
The above standards are derived from GB3098.13.