Norseman Drill & Tool NAS 907J Type 150-ALN Letter Sizes M42 Cobalt Twist Drill Bit

Norseman Drill & Tool NAS 907J Type 150-ALN Letter Sizes M42 Cobalt Twist Drill Bit

High-Speed Drilling for Extreme Conditions

The Norseman Drill & Tool NAS 907J Type 150-ALN Letter Size M42 Cobalt Twist Drill Bit is engineered for professionals who demand maximum speed, precision, and durability in the harshest machining environments. Manufactured in the USA to strict NAS 907J aerospace standards, this premium drill bit is produced from M42 high-speed steel with 8% cobalt, delivering outstanding red hardness, edge stability, and wear resistance under extreme heat.

Advanced TiAlN Coating for Maximum Tool Life

The defining feature of the Type 150-ALN is its Titanium Aluminum Nitride (TiAlN) coating, designed specifically for high-temperature and high-speed drilling. TiAlN forms a protective aluminum oxide layer during cutting, allowing the tool to operate at significantly higher temperatures without losing hardness. This advanced coating reduces friction, minimizes oxidation, and extends tool life—often allowing cutting speeds up to 200% faster than uncoated cobalt drills.

This makes the Type 150-ALN ideal for aggressive drilling in stainless steel, titanium alloys, hardened steels, and other difficult-to-machine materials, particularly in dry or minimal-lubrication environments.

Precision Geometry for Tight Tolerances

A 135° split point provides fast, self-centering, walk-free starts without the need for pilot holes, improving accuracy and reducing cycle time. Precision-ground flutes enhance chip evacuation and heat control, supporting consistent hole quality during continuous production runs. Offered in letter sizes, this drill bit delivers non-fractional diameters essential for aerospace, automotive, defense, and custom manufacturing applications where tight tolerances matter.

Key Features & Benefits

• M42 cobalt steel with 8% cobalt for superior heat resistance

• TiAlN coating for extreme temperature performance and long tool life

• 135° split point for fast, accurate, walk-free starts

• Letter size diameters for precision, non-standard hole sizing

• Designed for stainless steel, titanium, and hardened alloys

• Meets NAS 907J aerospace specifications

• Made in the USA for consistent, professional quality

Built for Professionals

When drilling speed, durability, and precision are critical, the Norseman Type 150-ALN Letter Size Cobalt Drill Bit delivers unmatched performance in extreme conditions.

Drill faster. Run hotter. Stay accurate—with Norseman.