
A range of short cobalt drills (steel quality HSCo 8% Co) with cylindrical shank and flat face.
The shank diameter tolerance class is H6 and the cutting diameter is K10.
Helix geometry is 30° right-handed and the cutting angle is 12°.
Specially designed for finishing work.
2 mm to ? 6 mm inch diameter hole cutters are available in C247 and C200 from a ? of6.5mm.
| dimensions (mm) | ||||
| housing | ? of cut | ? of shank | useful L | Total L |
| 1 | 2 | 6 | 7 | 51 |
| 2 | 2.5 | 6 | 8 | 52 |
| 3 | 3 | 6 | 8 | 52 |
| 4 | 3.50 | 6 | 10 | 54 |
| 5 | 4 | 6 | 11 | 55 |
| 6 | 4.50 | 6 | 11 | 55 |
| 7 | 5 | 6 | 13 | 57 |
| 8 | 5.50 | 6 | 13 | 57 |
| 9 | 6 | 6 | 13 | 57 |
| 10 | 11.00 | 12 | 22 | 79 |
ISO 1641 and DIN 844 K B