Norseman Drill & Tool HD Super Premium NAS 907B Type 190-AG Jobber Length Twist Bit (Fractional Sizes)
Magnum Strength for Demanding Drilling Applications
The Norseman Drill & Tool HD Super Premium NAS 907B Type 190-AG Jobber Length Twist Bit (Fractional Sizes) is engineered for professionals who require maximum power, precision, and durability in the toughest drilling conditions. Proudly Made in the USA and built to stringent NAS 907B aerospace specifications, this Magnum Series drill bit delivers outstanding reliability and performance in high-strength and work-hardening materials.
Built for Extreme Materials and Heavy-Duty Use
Manufactured from premium high-molybdenum tool steel, the 190-AG excels in drilling stainless steel, Inconel, titanium, hardened alloys, and other high-tensile metals. Its advanced metallurgy provides superior toughness, edge retention, and heat resistance—ensuring consistent performance in environments where standard bits fail.
The bit undergoes a proprietary nitro-carburized surface treatment, significantly increasing surface hardness, lubricity, and wear resistance. This process allows the bit to run cooler, cut cleaner, and last longer—even under continuous-duty or high-speed drilling conditions.
Enhanced Strength and Precision
A low-temperature stress relief process further improves durability by reducing brittleness and friction. The 135° self-centering split point provides fast, accurate starts with reduced walking and lower thrust pressure, making it ideal for precision drilling in manual, CNC, and automated production environments.
Precision-ground to exact aerospace tolerances, the 190-AG offers exceptional balance, chip control, and hole accuracy. The durable black and gold oxide finish improves corrosion resistance and enhances chip evacuation for smooth, efficient drilling.
Key Features
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Meets NAS 907B aerospace-grade performance requirements
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Nitro-carburized Magnum treatment for extreme hardness and lubricity
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Outperforms cobalt bits in stainless steel and alloy applications
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Low-temperature stress relief enhances toughness and reduces friction
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135° split point for fast, walk-free starts and precision hole placement
For unmatched tool life, superior cutting performance, and maximum reliability, choose the Norseman HD Super Premium Type 190-AG—the ultimate solution for demanding drilling applications.
