din 9021
*all measurements in millimeters (mm)*
| d | used for | d1 max | s |
| 3.2 | m3 | 9 | 0.8 |
| 4.3 | m4 | 12 | 1 |
| 5.3 | m5 | 15 | 1.2 |
| 6.4 | m6 | 18 | 1.6 |
| 8.4 | m8 | 24 | 2 |
| 10.5 | m10 | 30 | 2.5 |
| 13 | m12 | 37 | 3 |
| 15 | m14 | 44 | 3 |
| 17 | m16 | 50 | 3 |
| 20 | m18 | 56 | 4 |
| 22 | m20 | 60 | 4 |
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