Dormer A777 HSS-E Cobalt Jobber Drill Bits 8.6mm Pack of 10

Compare today's prices on the "Dormer A777 HSS-E Cobalt Jobber Drill Bits 8.6mm Pack of 10".

Dormer A777 HSS-E Cobalt Jobber Drill Bits 8.6mm Pack of 10

Engineered for the toughest drilling applications, the Dormer A777 HSS-E Cobalt Jobber Drill Bits deliver exceptional durability and precision in high-stress professional and industrial environments. With a cobalt content that enhances heat resistance and edge retention, these bits outperform standard HSS alternatives, ensuring consistent, clean holes in stainless steel, alloy steels, and other demanding materials. The advanced design reduces thrust and cutting forces, making them ideal for both manual and machine drilling operations.

- 135 degree split point eliminates walking and reduces the need for centre punching for accurate hole start

- Premium HSS-E (high-speed steel with 5% cobalt) for superior hot hardness and extended tool life

- Enhanced web design provides greater strength and reduced breakage, even under heavy feed rates

- Bright finish minimises friction and promotes efficient chip evacuation

- Tight manufacturing tolerances ensure concentricity and consistent hole quality across all ten bits

- Suitable for use on stainless steel, carbon steels, cast iron, and non-ferrous metals up to 800 N/mm² tensile strength

- Pack of 10 drills in 8.6mm diameter, ideal for precision bolt and screw clearance holes

Dormer’s A777 cobalt drill bits offer the reliability and performance that tradespeople and engineers demand for repetitive, high-volume work.

GTIN: 7320760375600