Originally posted on 2020年12月21日 @ 下午8:38
螺纹规格为M16~M48的六角厚螺母。
标记示例:
螺纹规格D=M20、机械性能为5级、不经表面处理的六角厚螺母的标记:
螺母 GB 56 M20

六角厚螺母(GB56-88) 螺纹规格为M16~M48的六角厚螺母:
螺纹规格 | da | dw | e | m | m′ | s | |||
D | max | min | min | min | max | min | min | max | min |
M16 | 17.3 | 16 | 22.5 | 26.17 | 25 | 24.16 | 19.33 | 24 | 23.16 |
M18 | 19.5 | 18 | 24.8 | 29.56 | 28 | 27.16 | 21.73 | 27 | 26.16 |
M20 | 21.6 | 20 | 27.7 | 32.95 | 32 | 30.4 | 24.32 | 30 | 29.16 |
M22 | 23.7 | 22 | 31.4 | 37.29 | 35 | 33.4 | 26.72 | 34 | 33 |
M24 | 25.9 | 24 | 33.2 | 39.55 | 38 | 36.4 | 29.12 | 36 | 35 |
M27 | 29.1 | 27 | 38 | 45.2 | 42 | 40.4 | 32.32 | 41 | 40 |
M30 | 32.4 | 30 | 42.7 | 50.85 | 48 | 46.4 | 37.12 | 46 | 45 |
M36 | 38.9 | 36 | 51.1 | 60.79 | 55 | 53.1 | 42.48 | 55 | 53.8 |
M42 | 45.4 | 42 | 60.6 | 72.09 | 65 | 63.1 | 50.48 | 65 | 63.8 |
M48 | 51.8 | 48 | 69.4 | 82.6 | 75 | 73.1 | 58.48 | 75 | 73.1 |