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M6 M8 不锈钢304沉头内六角螺丝钉 平头内六角螺栓 平杯沉杯螺丝
| 公称直径 | M2 | M2.5 | M3 | M4 | M5 | M6 | M8 | M10 | M12 | M16 | M20 | |
| 螺距 | 0.4 | 0.45 | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | |
| dk | max | 4 | 5 | 6 | 8 | 10 | 12 | 16 | 20 | 24 | 30 | 36 |
| min | 3.6 | 4.7 | 5.7 | 7.64 | 9.64 | 11.57 | 15.57 | 19.48 | 23.48 | 29.48 | 35.38 | |
| S | 公称 | - | - | 2 | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 12 |
| max | - | - | 2.1 | 2.6 | 3.1 | 4.12 | 5.14 | 6.14 | 6.175 | 10.175 | 12.212 | |
| min | - | - | 2.02 | 2.52 | 3.02 | 4.02 | 5.02 | 6.02 | 8.025 | 10.025 | 12.032 | |
| t | max | - | - | 1.2 | 1.8 | 2.3 | 2.5 | 3.5 | 4.4 | 4.6 | 5.3 | 5.9 |
| min | - | - | 0.95 | 1.55 | 2.05 | 2.25 | 3.2 | 4.1 | 4.3 | 5 | 5.6 | |
| k | ≈ | 1.9 | 2.5 | 2.5 | 3.4 | 4.1 | 4.9 | 6.2 | 7.6 | 9.6 | 10.6 | 11.4 |
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