The HSS-CBB-4 HSS cobalt drill bit is a jobber-length twist drill of 4mm diameter, made to DIN 338 with a straight shank and amber finish.
Features:
- HSS M35 tool steel with 5% cobalt for extra heat and wear resistance
- Fully ground flutes for accurate, clean drilling
- Amber (bronze) surface finish
- Straight (parallel) shank fits standard drill chucks
- Suited to stainless steel, cast iron and other hard metals
Specifications:
- Diameter: 4mm
- Material: HSS M35, 5% cobalt
- Standard: DIN 338
- Shank type: straight
- Finish: amber
Does the cobalt help with tougher materials? Yes, the 5% cobalt improves heat resistance so the bit copes better with stainless steel and hard alloys.
Please note: The product image is a representative photo used for multiple products in this range. Please refer to the title and the specifications above for the exact details of this product.