SOMTA HSS Parallel Shank Counterbores
| To Suit Capscrew | d 2 | d 1 | d 3 | l 2 | l 1 |
| M 3 | 6 | 3.4 | 5 | 14 | 71 |
| M 3.5 | 6.5 | 3.9 | 5 | 14 | 71 |
| M 4 | 8 | 4.5 | 5 | 14 | 71 |
| M 5 | 10 | 5.5 | 8 | 18 | 80 |
| M 6 | 11 | 6.6 | 8 | 18 | 80 |
| M 8 | 15 | 9 | 12.5 | 22 | 100 |
| M 10 | 18 | 11 | 12.5 | 22 | 100 |
| M 12 | 20 | 14 | 12.5 | 22 | 100 |
| M 14 | 24 | 16 | 20 | 30 | 130 |
| M 16 | 26 | 18 | 20 | 30 | 150 |
| M 18 | 30 | 20 | 20 | 35 | 155 |
| M 20 | 31 | 22 | 20 | 35 | 165 |
Cutting conditions
Product attributes
HSS
BS 328
