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DIN661,contersunk head rivets
DIN 661 
*All measurements in millimeters (mm)*
| d | d1 | k |
| 2 | 3.5 | 1 |
| 3 | 5.2 | 1.4 |
| 4 | 7 | 2 |
| 5 | 8.8 | 2.5 |
| 6 | 10.5 | 3 |
| 8 | 14 | 4 |
All information is strictly informative