Norseman Drill & Tool HSS Heavy-Duty NAS 907B Type 190-AN Jobber Length Twist Bit
TiN-Coated Strength for Maximum Performance
The Norseman Drill & Tool HSS Heavy-Duty NAS 907B Type 190-AN Jobber Length Twist Bit is engineered for professionals who demand exceptional strength, precision, and long-term durability in the most challenging drilling environments. Proudly Made in the USA and built to meet stringent NAS 907B aerospace specifications, this heavy-duty twist bit delivers industry-leading performance in high-load, high-heat metalworking applications.
Built for Tough Metals and High-Load Conditions
Manufactured from premium high-speed steel (HSS), the Type 190-AN is specifically designed to withstand the rigors of drilling through hard and abrasive materials including stainless steel, alloy steel, hardened metals, and cast iron. Its robust construction minimizes deflection under torque, ensuring smoother drilling, straighter holes, and consistent accuracy even in demanding production environments.
The 135° self-centering split point enhances cutting performance by reducing walking, lowering thrust pressure, and eliminating the need for a center punch. This provides faster engagement and cleaner, more controlled drilling—ideal for both hand-held and stationary machine applications.
TiN Coating for Superior Wear Resistance
A defining feature of the Type 190-AN is its Titanium Nitride (TiN) coating, engineered to significantly enhance:
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Surface hardness
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Heat and wear resistance
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Lubricity for smoother cutting
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Chip evacuation efficiency
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Overall tool life
This ultra-hard coating creates a low-friction barrier that allows the bit to operate cooler at high speeds, maintain a sharp cutting edge longer, and deliver superior performance in continuous or high-volume drilling operations.
Aerospace-Grade Precision
Every Type 190-AN bit is precision-ground to NAS 907B tolerances, ensuring exceptional balance, dimensional accuracy, and repeatable results across all applications.
Key Features
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Heavy-duty HSS construction for drilling hard metals
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135° split point for accurate, walk-free starts
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Titanium Nitride (TiN) coating for extreme hardness & lubricity
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Improved chip flow and cleaner hole finishes
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Manufactured to NAS 907B aerospace-grade standards
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Proudly made in the USA
For maximum durability, accuracy, and efficiency, the Norseman Type 190-AN Jobber Length Twist Bit delivers elite, professional-grade performance trusted by machinists, fabricators, and manufacturing professionals across industries.
