11-piece core drill set, M3 - M12
Intended use
Centre drills are used to create holes of a defined diameter, which are required as a basis for the subsequent thread cutting. They produce a dimensionally accurate centre hole that corresponds to the required thread type and size. This enables a precise, durable internal thread and reduces tool wear during thread cutting.
Technical data
| Nominal diameter [mm]: | 2,5 / 3,3 / 4,2 / 5,0 / 6,8 / 8,5 / 10,2 |
|---|---|
| Total length [mm]: | 56 / 70 / 74 / 85 / 107 / 116 / 132 |
| Working length [mm]: | 28 / 35 / 38 / 52 / 61 / 70 / 85 |
| Ø clamping shank [mm]: | 2,5 / 3,3 / 4,2 / 5,0 / 6,8 / 8,5 / 10,2 |
For centre hole drilling from M3 to M12
Drills made from HSS steel with 5% cobalt
Increased heat resistance
Excellent wear resistance
Suitable for stainless steels
Description of the
The drill bits in this eleven-piece core drill bit set are made of HSS steel with a five per cent cobalt content (M35). The cobalt alloy gives the drills increased heat hardness and very good wear resistance. They are suitable for machining stainless steels, hardened steels and high-strength alloys.
Scope of delivery
- 3 x twist drills, Ø 2.5 mm
- 3 x twist drills, Ø 3.3 mm
- 1 x twist drill, Ø 4.2 mm
- 1 x twist drill, Ø 5.0 mm
- 1 x twist drill, Ø 6.8 mm
- 1 x twist drill, Ø 8.5 mm
- 1 x twist drill, Ø 10.2 mm
More about the brand and products from
Similar articles
