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Sink & Step Drills For Screw Thread (M-119) – 180 Degree
- 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 |
6.5 |
65 |
35 |
13 |
6.5 |
| M4 |
4.5 |
8.0 |
75 |
42 |
18 |
8.0 |
| M5 |
5.5 |
9.5 |
85 |
50 |
22 |
9.5 |
| M6 |
6.6 |
11.0 |
90 |
53 |
25 |
11.0 |
| M8 |
9.0 |
14.0 |
95 |
53 |
28 |
12.0 |
| M10 |
11.0 |
17.5 |
105 |
63 |
30 |
12.0 |
| M12 |
14.0 |
20.0 |
110 |
68 |
32 |
12.0 |
| 1/4 |
6.9 |
11.0 |
90 |
53 |
25 |
11.0 |
| 5/16 |
8.9 |
14.0 |
95 |
53 |
28 |
12.0 |
| 3/8 |
10.5 |
15.0 |
105 |
63 |
30 |
12.0 |
| 1/2 |
14.7 |
20.0 |
110 |
68 |
32 |
12.0 |
