Norseman Drill & Tool HSS Heavy-Duty NAS 907B Type 190 Jobber Length Twist Bit
Built Tough for Precision and Durability
The Norseman Drill & Tool HSS Heavy-Duty NAS 907B Type 190 Jobber Length Twist Bit is engineered for professionals who require rugged strength, exceptional accuracy, and proven durability in demanding drilling applications. Proudly Made in the USA, this high-performance bit is manufactured to NAS 907B aerospace specifications, ensuring uncompromising consistency, precision, and quality across every job.
Heavy-Duty Construction for Tough Materials
Crafted from premium high-speed steel (HSS), the Type 190 delivers superior hardness and wear resistance while maintaining the toughness needed for drilling into challenging materials. It excels in stainless steel, alloy steels, tool steels, and other hard metals, making it a top-tier choice for machinists, fabricators, and industrial professionals.
The 135° self-centering split point provides fast, accurate starts while reducing walking and eliminating the need for a center punch. This geometry lowers thrust pressure and improves penetration, ensuring efficient drilling in both hand-held and stationary equipment.
Enhanced Performance with Black Oxide Finish
A durable black oxide coating boosts performance by reducing friction, increasing lubricity, and improving chip evacuation. This finish enhances heat dissipation and provides added corrosion resistance, extending tool life even in high-speed or continuous drilling environments.
Precision You Can Trust
Each Type 190 twist bit is precision-ground to aerospace tolerances, ensuring perfect concentricity, accurate hole sizing, and balanced operation. Its jobber length design offers the ideal combination of reach, rigidity, and strength for everyday professional drilling tasks.
Key Features
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Heavy-duty HSS construction for superior strength and longevity
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135° split point for quick, walk-free starts and reduced thrust
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Black oxide finish improves lubricity, chip flow, and corrosion resistance
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Manufactured to NAS 907B aerospace-grade standards
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Ideal for drilling stainless steel, alloy steels, and other hard metals
For unmatched durability, precision, and industrial-grade performance, trust the Norseman Type 190 Jobber Length Twist Bit—the tool built to power through your toughest drilling challenges.
