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 | Tone (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 am |
| 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 | two | 115.44 |
| M16 | two | 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 |
