Cobalt Drill Bit Set | M35 High-Speed Steel | For Stainless Steel & Hard Metal Drilling

This twist drill bit set is manufactured from M35 cobalt high-speed steel (HSS-Co) to provide cutting capability in metal and stainless steel. The material offers a typical hardness between 65 and 67 HRC. Each bit features spiral flutes that clear waste material away from the workpiece hole during operation, alongside a 135 degree point angle engineered for clean starts in resistant metals. Selecting this tooling ensures compatibility with workshop machines and site drills fitted with conventional three-jaw chucks. The straight cylindrical shank clamps securely without requiring specialised toolholders. To fit, open the chuck jaws, insert the straight shank fully, and tighten the mechanism evenly to keep the cutting axis true and prevent slip under operational torque. These drill bits are suitable for fabrication facilities, maintenance departments, and general mechanical workshops. They suit drilling tasks across structural steel, stainless steel sheet, and non-ferrous or ferrous industrial metal stock. The robust alloy makeup handles the demands of routine maintenance, repairs, and production machining operations.