
| L/D relation | Angle | ||||
| Drill | NC tapping device | ||||
| Code | Description | Code | Description | ||
| 03 | 3 x D | 90 | 90° | ||
| 05 | 5 x D | 120 | 120° | ||
| 08 | 8 x D | With inner cooling | |||
| 10 | 10 x D | ||||
| 12 | 12 x D | ||||
| 15 | 15x D | ||||
| 20 | 20 x D | ||||
| 30 | 30 x D | ||||
| 6 | 7 | ||||
| Bore dia | meter [mm] | Shank diameter [mm] | |||
| Code | Description | Code | Description | ||
| 0200 | 2,0 | S | 4,0 | ||
| 0850 | 8,5 | ||||
| 1800 | 18,0 | ||||
| ... | |||||
| 8 | 9 |
a b c d
a Boring b Drilling c Profile drilling d Centering