Norseman Drill & Tool Wire Sizes HD Super Premium NAS 907B Type 190-AG Jobber Length Twist Bit
Unmatched Precision and Durability in Every Size
The Norseman Drill & Tool Wire Sizes HD Super Premium NAS 907B Type 190-AG Jobber Length Twist Bit delivers elite-level strength, accuracy, and longevity for professionals who work with the toughest materials. As part of Norseman’s Magnum Super Premium Series, this American-made drill bit is engineered to outperform cobalt drills—especially in stainless steel, titanium, Inconel, and other work-hardening alloys where precision and stability are critical.
Magnum-Treated Strength for Demanding Applications
Manufactured from premium high-molybdenum tool steel, each 190-AG bit undergoes Norseman’s exclusive nitro-carburized surface treatment, dramatically increasing surface hardness, lubricity, and wear resistance. This results in cooler drilling, smoother cutting action, and significantly extended tool life, even during high-speed or continuous drilling cycles.
A low-temperature stress relief process further enhances toughness and reduces brittleness, providing the ideal balance of strength and flexibility required for demanding industrial and aerospace applications. These engineering enhancements make the 190-AG ideal for precision fabrication, automated machining, and professional maintenance operations.
Aerospace-Level Accuracy
Each bit is precision-ground to NAS 907B aerospace specifications, ensuring exceptional concentricity, balance, and accuracy in every wire gauge size. The 135° split point minimizes walking, provides clean, burr-free starts, and lowers feed pressure—ideal for drilling hardened surfaces or curved materials with superior control.
The durable black and gold oxide finish improves chip evacuation, resists corrosion, and maintains optimal cutting performance, making this bit a reliable choice for high-production environments.
Key Features
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Nitro-carburized Magnum surface for superior hardness and lubricity
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Outperforms cobalt drills in stainless steel and high-strength alloys
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Low-temperature stress relief enhances toughness and reduces friction
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135° split point for accurate, walk-free starts
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Precision-ground to NAS 907B aerospace-grade standards
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Available in wire gauge sizes for fine incremental precision
For unmatched durability, accuracy, and performance, the Norseman Drill & Tool Wire Sizes HD Super Premium NAS 907B Type 190-AG Jobber Length Twist Bit stands as the superior choice for high-performance precision drilling.
