Prima Tools HSS 5% Cobalt (M35) Quick Release Hex Drive Drill Bit

Prima Tools Quick Release Impact Hex Drive Drill Bit 5% Cobalt (M35)

The Prima Tools Impact Hex Drive Drill Bit 5% Cobalt (M35) is built for demanding applications where durability, heat resistance, and consistent performance are critical. Designed for use with impact drivers and cordless drills, this bit delivers fast penetration, clean holes, and exceptional tool life—especially in harder materials.

Manufactured from premium M35 high speed steel with 5% cobalt and finished with a Cobalt Amber coating, it offers increased hardness, superior heat resistance, and outstanding wear performance in high-load drilling conditions.

Key Features

• M35 5% Cobalt Construction – Enhanced hardness and heat resistance for drilling tougher materials.
• Longer Tool Life – Outperforms standard HSS drill bits in demanding applications.
• 1/4″ Quick-Change Hex Shank – Secure fitment for impact drivers and cordless drills.
• Optimised Cutting Geometry – Fast penetration with reduced work hardening in harder steels.
• Split Point Tip – Improves centering accuracy and minimises walking.
• Cobalt Amber Coating – offers excellent heat resistance and durability, making it ideal for tough materials like stainless steel and cast iron.
• Fully Ground Construction – Ensures precision, strength, and consistent drilling performance.

Applications

• General steels and alloy steels
• Stainless steel (enhanced performance vs standard HSS)
• Harder ferrous materials
• Timber and plastics
• Maintenance and general-purpose drilling

Recommended Use

For best results when drilling ferrous materials such as stainless steel, the use of a cutting fluid is strongly recommended. This helps reduce heat build-up, improves cutting efficiency, and significantly extends tool life particularly during high-speed or continuous drilling applications.