Norseman Drill & Tool Letter Sizes Type 340-A Twist Drill Bit
Aerospace-Grade Precision with Enhanced Durability
The Norseman Drill & Tool Letter Sizes Type 340-A Twist Drill Bit delivers aerospace-level accuracy, consistency, and durability for professionals who demand the highest machining standards. Proudly made in the USA, this premium drill bit is manufactured to NAS 907A aerospace specifications, ensuring exceptional performance in precision-critical industrial, manufacturing, and maintenance applications.
Engineered for Strength, Accuracy & Versatility
Crafted from premium high-speed steel (HSS), the Type 340-A offers outstanding toughness and cutting ability across a wide range of materials, including steel, aluminum, brass, copper, and other non-ferrous metals. The 118° standard point geometry ensures smooth, controlled starts with reduced walking and clean, precise hole formation—ideal for high-tolerance metalworking.
Enhanced Lubricity & Wear Protection
The black oxide finish adds significant performance benefits, including increased lubricity, reduced friction, and improved chip evacuation. This finish enhances heat dissipation and extends cutting-edge life, making the Type 340-A ideal for high-speed or continuous drilling applications where tool longevity is essential.
Precision-Ground for Aerospace-Level Consistency
Each drill bit is precision-ground to strict aerospace tolerances, ensuring superior balance, concentricity, and consistent accuracy. Available in letter-size increments, this series provides the precise dimensions required in aerospace, automotive, machining, and high-precision fabrication environments.
Key Features
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Manufactured to NAS 907A aerospace-grade standards
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Premium HSS construction for superior durability and cutting performance
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118° standard point for smooth, accurate starts and controlled drilling
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Black oxide finish enhances wear resistance, lubricity, and heat control
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Precision-ground flutes ensure consistent chip evacuation and hole quality
For industries where accuracy, strength, and dependability are essential, the Norseman Letter Sizes Type 340-A Twist Drill Bit delivers American-made excellence trusted by aerospace and machining professionals worldwide.
