HSS Cobalt Drill Bits (M35, 5% Cobalt) for Stainless Steel & Hard Metals – 135° Split Point – 1–14mm – Twin / 5 / 10 Pack Options | Abracs

HSS Cobalt Drill Bits (M35) for Stainless Steel & Hard Metals

These M35 HSS cobalt drill bits (5% cobalt) are designed for tougher metal drilling where standard HSS bits struggle—especially stainless steel, cast iron, and high-tensile alloys. The cobalt alloy improves heat resistance and edge retention, while the 135° split point starts faster and reduces wandering for cleaner, more accurate holes.

Key benefits

• M35 (5% cobalt): better heat resistance and wear life for hard metals
• 135° split point: self-centres, reduces “walking”, cleaner starts
• Precision ground flutes: improved swarf removal and smoother drilling
• Workshop pack options: twin packs for van stock + tubes for bulk use
• Works with corded/cordless drills and drill presses

Best for

• Stainless steel fixings, brackets, sheet/box section
• Cast iron, alloy steels, high tensile metals
• Automotive, fabrication, maintenance and site drilling

How to avoid snapped bits

• Stainless steel: low RPM, steady pressure, cutting oil, and “peck drill” (in/out)
• Always centre punch the hole position
• Clear swarf often—overheating kills bit life faster than anything

Specification

• Type: HSS Cobalt Twist Drill Bit
• Material: M35 HSS (5% cobalt)
• Point: 135° Split Point
• Finish: Bright ground
• Shank: Round
• Use on: Stainless steel, alloy steel, cast iron, non-ferrous metals
• Use with: Rotary drilling only (corded/cordless drills, drill press)