din 7979d
*all measurements in millimeters (mm)*
| d1 m6 | c~ | d2 | b | t min. |
| m6 | 2.1 | m4 | 6 | 10 |
| m8 | 2.6 | m5 | 8 | 12 |
| m10 | 3 | m6 | 10 | 16 |
| m12 | 3.8 | m6 | 10 | 16 |
| m16 | 4.7 | m8 | 12 | 20 |
| m20 | 6 | m10 | 16 | 25 |
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