网站小编 Originally posted on 2020年12月25日 @ 上午9:31
螺纹规格M4～M16的焊接六角螺母的型式、尺寸和技术条件。
标记示例：
螺纹规格D=M10、材料为含碳量不大于0.25%的钢、不经表面处理的焊接六角螺母的标记：
螺母 GB/T 13681 M10
螺纹规格M4～M16的焊接六角螺母：
| 螺纹规格 | （D或D×P） | M4 | M5 | M6 | M8 | M10 | M12 | M14 | M16 |
| — | — | — | 1 | 1 | 1.5 | 1.5/ | 1.5 | ||
| — | — | — | — | 1.25/ | 1.25/ | — | — | ||
| da | max | 4.6 | 5.75 | 6.75 | 8.75 | 10.8 | 13 | 15.1 | 17.3 |
| min | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | |
| dw | min | 7.88 | 8.88 | 9.63 | 12.63 | 15.63 | 17.37 | 19.57 | 21.57 |
| e | min | 9.83 | 10.95 | 12.02 | 15.38 | 18.74 | 20.91 | 24.27 | 26.51 |
| dy | max | 5.97 | 6.96 | 7.96 | 10.45 | 12.45 | 14.75 | 16.75 | 18.735 |
| min | 5.885 | 6.87 | 7.87 | 10.34 | 12.34 | 14.64 | 16.64 | 18.605 | |
| d3 | max | 6.18 | 7.22 | 8.22 | 10.77 | 12.77 | 15.07 | 17.07 | 19.13 |
| min | 6 | 7 | 8 | 10.5 | 12.5 | 14.8 | 16.8 | 18.8 | |
| h1 | max | 0.65 | 0.7 | 0.75 | 0.9 | 1.15 | 1.4 | 1.8 | 1.8 |
| min | 0.55 | 0.6 | 0.6 | 0.75 | 0.95 | 1.2 | 1.6 | 1.6 | |
| h2 | max | 0.35 | 0.4 | 0.4 | 0.5 | 0.65 | 0.8 | 1 | 1 |
| min | 0.25 | 0.3 | 0.3 | 0.35 | 0.5 | 0.6 | 0.8 | 0.8 | |
| b | max | 1 | 1 | 1.12 | 1.25 | 1.55 | 1.55 | 1.9 | 1.9 |
| min | 0.6 | 0.6 | 0.68 | 0.75 | 0.95 | 0.95 | 1.1 | 1.1 | |
| m | max | 3.5 | 4 | 5 | 6.5 | 8 | 10 | 11 | 13 |
| min | 3.2 | 3.7 | 4.7 | 6.14 | 7.64 | 9.64 | 10.3 | 12.3 | |
| s | max | 9 | 10 | 11 | 14 | 17 | 19 | 22 | 24 |
| min | 8.78 | 9.78 | 10.73 | 13.73 | 16.73 | 18.67 | 21.67 | 23.67 |
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