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 represents the pinnacle of cutting tool engineering, combining aerospace-grade precision with advanced metallurgical treatments for unrivaled performance. Proudly Made in the USA, this premium drill bit is manufactured to strict NAS 907B aerospace specifications, ensuring flawless accuracy and reliability in demanding industrial environments.
Engineered for Maximum Durability and Wear Resistance
Constructed from premium high-speed steel (HSS), each 190-CN drill undergoes Norseman’s proprietary CN-TECH™ CRYO/NITRIDE process—a dual-stage treatment designed to dramatically enhance tool life, cutting strength, and durability.
Nitro-Carburized Surface Hardening
The nitride coating forms a hard, wear-resistant outer layer that provides:
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Exceptional abrasion resistance
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Superior hardness and edge retention
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Corrosion-resistant performance
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Reduced friction for smoother cutting
This makes the bit highly effective for drilling stainless steel, titanium, high-tensile alloys, and other tough metals.
Deep Cryogenic Treatment (-300°F)
The cryogenic process refines the steel’s microstructure, stabilizing the grain and increasing toughness. Benefits include:
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Reduced brittleness
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Longer cutting edge life
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Improved dimensional stability
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Enhanced resistance to thermal fatigue
Precision Cutting with 135° Split Point
The 135° split-point tip provides accurate, walk-free starts, lowers thrust pressure, and improves penetration in hard materials. Combined with precision-ground flutes, the 190-CN offers efficient chip evacuation and cooler operation, even under heavy load.
The black and bronze oxide finish further boosts lubricity and corrosion resistance for consistent, smooth performance.
Key Features
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CN-TECH™ CRYO/NITRIDE dual treatment for superior hardness & toughness
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Nitride case hardening for extreme wear and corrosion resistance
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Cryogenic processing for increased toughness and edge retention
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135° split point for precise, reduced-thrust drilling
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Precision-ground to NAS 907B aerospace standards
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Made in the USA
For unmatched tool life, strength, and aerospace-grade accuracy, the Norseman Type 190-CN CN-TECH™ Jobber Length Twist Drill delivers elite performance that outlasts and outperforms in every application.
