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DIN 551-开槽平端紧定螺钉 标准查询
DIN 551 
*All measurements in millimeters (mm)*
| d | d1 max | n | t min |
| M3 | 2 | 0.4 | 0.8 |
| M4 | 2.5 | 0.6 | 1.12 |
| M5 | 3.5 | 0.8 | 1.28 |
| M6 | 4 | 1 | 1.6 |
| M8 | 5.5 | 1.2 | 2 |
| M10 | 7 | 1.6 | 2.4 |
| M12 | 8.5 | 2 | 2.8 |
All information is strictly informative