Norseman Drill & Tool CN-TECH™ NAS 907B Type 190-CN Jobber Length Twist Drill

Norseman Drill & Tool CN-TECH™ NAS 907B Type 190-CN Jobber Length Twist Drill: CRYO/NITRIDE Technology for Unmatched Strength and Precision

The Norseman Drill & Tool CN-TECH™ NAS 907B Type 190-CN Jobber Length Twist Drill is the ultimate solution for professionals demanding superior durability, accuracy, and longevity. Proudly made in the USA, this high-performance drill is manufactured to NAS 907B aerospace standards, ensuring precision, consistency, and reliability for the most demanding industrial applications.

Built from premium high-speed steel (HSS), each 190-CN drill undergoes Norseman’s advanced CN-TECH™ CRYO/NITRIDE process, a combination of nitride case hardening and cryogenic treatment engineered for extreme performance. The nitride process produces a hardened surface that offers superior tool life, exceptional wear resistance, and outstanding corrosion protection, making it ideal for drilling tough materials such as stainless steel, titanium, and high-tensile alloys.

The cryogenic treatment at -300°F refines the steel’s microstructure, improving molecular stability and grain uniformity. This process dramatically increases toughness while reducing brittleness, resulting in smoother drilling, longer edge retention, and reduced risk of breakage in high-speed, high-load environments.

The 135° split-point design provides precise, burr-free starts, minimizing walking and reducing thrust pressure. Precision-ground spiral flutes ensure efficient chip evacuation and cooler operation, extending both tool life and cutting performance.

Finished with a black and bronze oxide coating, the CN-TECH™ 190-CN drill enhances lubricity and corrosion resistance, ensuring consistent results in any environment.

Key Features:

• CN-TECH™ CRYO/NITRIDE dual process for unmatched hardness and toughness

• Nitride case hardening for superior wear and corrosion resistance

• Cryogenic treatment (-300°F) increases toughness and reduces brittleness

• 135° split-point for precise starts and reduced walking

• Meets NAS 907B aerospace-grade specifications

For ultimate tool life, performance, and precision, trust the Norseman Drill & Tool CN-TECH™ NAS 907B Type 190-CN Jobber Length Twist Drill—engineered to outperform and outlast in every application.