Sink & Step Drills For Screw Thread (M-118)
- Specially designed drillsthat are suitable for drilling cone holes for general screws and hexagonal head screws.
- Allow for two machining processes accomplished by one process, and provides superior concentricity.
| Specification | d – mm | D – mm | L – mm | l – mm | l1 – mm | ds – mm |
|---|---|---|---|---|---|---|
| M3 | 3.4 | 6.4 | 65 | 35 | 13 | 6.4 |
| M4 | 4.5 | 8.4 | 75 | 42 | 18 | 8.4 |
| M5 | 5.5 | 10.4 | 85 | 50 | 22 | 10.4 |
| M6 | 6.6 | 12.5 | 90 | 51 | 25 | 12.0 |
| M8 | 9.0 | 16.5 | 95 | 53 | 28 | 12.0 |
