Norseman Drill & Tool Fractional Sizes Premium NAS 907B Type 190-CN Jobber Length Twist Drill
CN-TECH™ Coated Precision for Demanding Applications
The Norseman Drill & Tool Fractional Sizes Premium NAS 907B Type 190-CN Jobber Length Twist Drill is engineered for professionals who require maximum drilling accuracy, durability, and efficiency. Proudly made in the USA and manufactured to NAS 907B aerospace-grade standards, this premium drill bit delivers consistent, high-performance results in the most demanding industrial environments.
Advanced CN-TECH™ Surface Treatment
Constructed from premium high-speed steel (HSS), the 190-CN features Norseman’s exclusive CN-TECH™ surface treatment, a state-of-the-art coating engineered to dramatically increase hardness, lubricity, and wear resistance. This advanced surface enhancement reduces friction and heat buildup, resulting in cooler, smoother drilling and significantly extended tool life. The CN-TECH™ finish makes this bit ideal for drilling stainless steel, titanium, tool steels, and high-tensile alloys where precision and toughness matter most.
Engineered for Precision and Efficiency
A 135° self-centering split point ensures quick, accurate starts while reducing walking on hard or curved surfaces. This geometry also lowers thrust pressure, improving control and helping produce clean, accurate holes. The drill’s precision-ground flutes promote efficient chip evacuation, preventing clogging and maintaining peak cutting performance during continuous or high-speed drilling operations.
The black and bronze oxide finish further enhances lubricity, corrosion resistance, and chip flow—ensuring stable performance across repetitive drilling cycles.
Key Features
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Meets NAS 907B aerospace-grade performance specifications
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CN-TECH™ coating delivers exceptional hardness, lubricity & wear resistance
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135° split point for fast, accurate, walk-free starts
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Premium HSS construction for strength and heat resistance
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Black & bronze oxide finish for corrosion protection and improved chip flow
For superior precision, durability, and high-performance drilling, the Norseman Drill & Tool Fractional Sizes Premium NAS 907B Type 190-CN Jobber Length Twist Drill is the professional’s choice for today’s most demanding applications.
