DEWALT HSS-E Cobalt Drill Bits 11.5 mm, 5-Pack, Straight Shank, 135° Split Point, DIN 338, for Stainless Steel and Hardened Metals

Drilling into stainless steel, cast iron, or high-tensile alloys quickly dulls ordinary bits, causing burning, wandering, and premature failure. These DEWALT HSS-E cobalt drill bits are engineered to power through tough metals with precision and durability, saving you time and frustration on demanding jobs.

Who is it for

Professional metalworkers, fabricators, maintenance technicians, and serious DIYers who regularly drill hard or abrasive materials and demand consistent, accurate holes with long tool life.

Main features

• 5% cobalt (M35) high-speed steel resists heat and wear, maintaining hardness even at high temperatures.
• 135° split point self-centers, reduces walking, and requires less feed pressure for faster starts.
• Ground flutes deliver efficient chip evacuation and smoother cutting in tough materials.
• Bright finish provides a clean surface and good corrosion resistance.
• DIN 338 jobber length with straight shank fits standard drill chucks.
• h8 tolerance ensures precise hole diameters for critical applications.

Specifications

• Diameter: 11.5 mm
• Quantity: 5 bits
• Material: HSS-E (High-Speed Steel with Cobalt)
• Cobalt content: 5% (M35 grade)
• Point angle: 135° split point
• Shank type: Straight shank
• Flute type: Ground flutes
• Cutting direction: Right-hand cut
• Standard: DIN 338
• Tolerance: h8
• Finish: Bright
• Recommended applications: Stainless steel, cast iron, high-tensile steel, hardened metals, alloys

Tips

Use a cutting fluid or lubricant when drilling stainless steel or hardened alloys to extend bit life and improve finish. For deep holes, withdraw the bit periodically to clear chips and reduce heat buildup. Store bits in a dry, organized case to prevent damage to cutting edges.