8mm HSS Drill Bit (for Metal Drilling)

Rotary cutting tools manufactured from high-speed steel alloys (M2, M35, M42) for drilling cylindrical holes in metal, wood, and plastic. Retain cutting edge hardness at elevated temperatures per DIN 338, enabling faster drilling speeds than carbon steel alternatives.

Specification #

Benefits #

HSS drill bits solve the problem of rapid tool wear and edge failure when drilling metals at production speeds. Carbon steel bits lose hardness above 200°C, causing the cutting edge to deform and the bit to wander or snap. High-speed steel alloys retain hardness at the 500–600°C temperatures generated during metal drilling, maintaining a sharp cutting edge across hundreds of holes. The M35 and M42 cobalt grades extend this capability to stainless steel and alloy steel, materials that work-harden quickly and destroy standard bits. The spiral flute geometry evacuates chips efficiently, preventing clogging that causes bit breakage in deep-hole drilling. Resharpenability extends service life significantly beyond disposable alternatives.

Common Applications #

General-purpose drilling across metal fabrication, construction, and maintenance operations.

• Metal fabrication and machining
• Automotive repair and maintenance
• Construction and building
• Electrical installation (conduit and panel drilling)
• Plumbing (pipe and fixture drilling)
• Woodworking and carpentry
• DIY and home improvement
• Industrial maintenance
• Aerospace manufacturing