- 中山螺丝
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DIN 525 
*All measurements in millimeters (mm)*
| d | l | b |
| M6 | 130 | 35 |
| M8 | 140 | 40 |
| M10 | 150 | 45 |
| M12 | 170 | 55 |
| M14 | 180 | 60 |
| M16 | 190 | 65 |
| M18 | 200 | 70 |
| M20 | 210 | 75 |
| M22 | 220 | 80 |
| M24 | 230 | 85 |
| M27 | 250 | 90 |
| M30 | 270 | 105 |
| M33 | 290 | 115 |
| M36 | 310 | 125 |
All information is strictly informative