Norseman Drill & Tool Wire Gauge Sizes HSS Heavy-Duty NAS 907B Type 190-ACN Jobber Length Twist Bit
TiCN-Coated Precision for Maximum Durability and Performance
The Norseman Drill & Tool Wire Gauge Sizes HSS Heavy-Duty NAS 907B Type 190-ACN Jobber Length Twist Bit is engineered for professionals who require exceptional precision, long tool life, and consistent performance in demanding drilling environments. Proudly Made in the USA, this high-performance bit is manufactured to NAS 907B aerospace-grade specifications, ensuring outstanding accuracy, balance, and reliability.
Heavy-Duty Strength for Tough Metals
Constructed from premium high-speed steel (HSS), the Type 190-ACN is built to tackle challenging materials such as stainless steel, titanium, alloy steels, and other hard metals. Its 135° self-centering split point enables quick, accurate starts while reducing thrust pressure and eliminating walking—ideal for precision-critical drilling in both hand-held and machine applications.
TiCN Coating for Extreme Wear Resistance
The advanced Titanium Carbon Nitride (TiCN) coating significantly boosts the bit’s performance by enhancing:
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Surface hardness
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Lubricity and chip evacuation
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Heat resistance during high-speed drilling
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Overall tool life and durability
TiCN’s ultra-low-friction surface keeps drilling cool and efficient, reduces wear, and maintains edge sharpness far longer than uncoated bits—perfect for continuous or high-load operations in industrial and aerospace environments.
Precision-Ground for Aerospace Accuracy
Each bit is precision-ground to NAS 907B tolerances, ensuring consistent hole sizing, superior balance, and vibration-free operation. Available in wire gauge sizes, the 190-ACN provides the fine incremental precision essential for tight-tolerance manufacturing, maintenance, and engineering work.
Key Features
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TiCN coating for extreme hardness, lubricity, and wear resistance
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Heavy-duty HSS construction for drilling hard, high-tensile metals
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135° split point for fast, accurate, self-centering starts
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Precision-ground to meet NAS 907B aerospace standards
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Available in wire gauge sizes for precision-critical drilling
For unmatched durability, accuracy, and cutting performance, the Norseman Type 190-ACN Wire Gauge Twist Bit delivers the American-made excellence professionals trust in the most demanding drilling applications.
