Mũi khoan đen HSS-R DIN 338 Ruko No.201
Twist drill DIN 338 type N, HSS rolled
- Article no. 201
- Ø : 0.3 - 20.0mm
- DIN 338
- Material HSS-R
- Surface Black surface
- Cutting direction right hand cutting
- Shank cylindrical
- Drilling depth 5 x D
- Point cut Shape N: Helical point normal ground
- Point angle 118°
- Helix angle 25-30°
- Tolerance h8
- Profile of flute normal
- Core normal