Ever thought about how tiny threads can bear immense loads? This article unveils the secrets of metric thread cross-sectional areas and their role in mechanical engineering. Learn how these measurements impact the strength and efficiency of your projects. Dive in to enhance your understanding and boost your engineering prowess!
Here is the cross-sectional area table for metric threads, the units are in millimeters and square millimeters.
(The so-called cross-sectional area refers to the effective force-bearing area of the thread)
Standard Source: GB/T16823.1-1997 Stress Cross-Sectional Area and Bearing Area of Threaded Fasteners
| Thread Specification | Pitch (mm) | Cross-Sectional Area (mm2） |
| M1.4 | 0.3 | 0.98 |
| M1.7 | 0.35 | 1.48 |
| M2.0 | 0.4 | 2.07 |
| M2.3 | 0.4 | 2.91 |
| M2.5 | 0.45 | 3.39 |
| M3.0 | 0.5 | 5.03 |
| M3.5 | 0.6 | 6.78 |
| M4.0 | 0.7 | 8.78 |
| M4.5 | 0.75 | 11.32 |
| M5.0 | 0.8 | 14.18 |
| M6.0 | 1 | 20.12 |
| M7.0 | 1 | 28.86 |
| M8.0 | 1.25 | 36.61 |
| M9.0 | 1.25 | 48.12 |
| M10 | 1.5 | 57.99 |
| M11 | 1.5 | 72.27 |
| M12 | 1.75 | 84.27 |
| M14 | 2 | 115.44 |
| M16 | 2 | 156.67 |
| M18 | 2.5 | 192.47 |
| M20 | 2.5 | 244.79 |
| M22 | 2.5 | 303.40 |
| M24 | 3 | 352.50 |
| M27 | 3 | 459.41 |
| M30 | 3.5 | 560.59 |
| M33 | 3.5 | 693.55 |
| M36 | 4 | 816.72 |
| M39 | 4 | 975.75 |
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