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DIN653 knurled thumb screw
DIN 653 
*All measurements in millimeters (mm)*
| d | d1 | k |
| M3 | 12 | 2.5 |
| M4 | 16 | 3.5 |
| M5 | 20 | 4 |
| M6 | 24 | 5 |
| M8 | 30 | 8 |
| M10 | 36 | 10 |
All information is strictly informative