Metal Drill Bit White HSS-G 4.5mm
Description
Drill bit made of high speed steel (4241), hardness 62° HRc (+/- 2°), apex angle 118, straight cut without chamfer correction, suitable for manual sharpening. Diameter tolerance h8. Right-hand spiral drill, N type, high flexibility and torsion strength, ground blades. Cylindrical shank corresponding to the drill diameter. The surface of the drill is covered with a layer of oxide, which ensures a low friction coefficient, reduces the risk of chips sticking to the drill and increases drilling efficiency. Intended for general applications, for machining alloy and carbon steels with hardness up to 250Bhn, gray cast iron, non-ferrous metals and hardened plastics. Complies with DIN-338. It is recommended to use together with the coolant. Diameter: 4.5mm.