Norseman Drill & Tool Letter Sizes HSS Heavy-Duty NAS 907B Type 190-ALN Jobber Length Twist Bit
TiAlN-Coated Strength for Extreme Heat and Precision Drilling
The Norseman Drill & Tool Letter Sizes HSS Heavy-Duty NAS 907B Type 190-ALN Jobber Length Twist Bit is engineered for professionals who demand exceptional heat resistance, precision, and durability. Proudly made in the USA and manufactured to NAS 907B aerospace-grade specifications, this high-performance drill bit delivers consistent accuracy and long service life in the most demanding industrial environments.
Built for High Heat and Hard Metals
Constructed from premium high-speed steel (HSS), the Type 190-ALN is specifically designed for drilling into extremely tough materials, including:
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Stainless steel
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Titanium
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Inconel
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Hardened and high-tensile alloys
Its 135° self-centering split point ensures fast, accurate starts, reduced thrust, and minimized walking—essential for precise hole placement in heavy-duty applications.
TiAlN Coating for Extreme Performance
The defining feature of the Type 190-ALN is its Titanium Aluminum Nitride (TiAlN) coating, engineered to withstand intense heat and friction during high-speed and dry machining. As the bit operates, TiAlN forms a protective aluminum oxide layer, delivering:
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Exceptional heat and oxidation resistance
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Increased surface hardness
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Reduced friction and improved chip flow
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Longer tool life in high-temperature environments
This makes the 190-ALN ideal for continuous drilling, production machining, and any application where traditional coatings fall short.
Aerospace-Grade Accuracy
Each drill bit is precision-ground to strict NAS 907B tolerances, ensuring superior balance, stability, and consistent hole sizing. Available in letter sizes, it delivers the precision required for machining, fabrication, and other exacting industrial tasks.
Key Features
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TiAlN coating for superior heat resistance and wear protection
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Heavy-duty HSS construction for drilling hard metals
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135° split point for self-centering, walk-free starts
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Precision-ground to NAS 907B aerospace standards
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Available in letter sizes for precision-critical work
For unmatched durability, accuracy, and high-temperature performance, choose the Norseman Type 190-ALN TiAlN Jobber Length Twist Bit—trusted by professionals who refuse to compromise.
