Norseman Drill & Tool Letter Sizes Type 340-A Twist Drill Bit
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 combines aerospace-level precision with exceptional durability, making it the go-to choice for professionals who demand reliability and accuracy. Proudly made in the USA, this high-performance drill bit is manufactured to NAS 907A aerospace specifications, ensuring consistent quality, strength, and precision in demanding industrial applications.
Constructed from premium high-speed steel (HSS), the Type 340-A is engineered to deliver long-lasting performance and smooth cutting action across a range of materials, including steel, aluminum, brass, and other non-ferrous metals. Its 118° standard point geometry provides stable, accurate starts and controlled cutting with reduced walking, ensuring clean, precise holes in every application.
The black oxide finish enhances wear resistance, lubricity, and heat dissipation—critical factors for maintaining sharpness and efficiency over extended use. This durable finish reduces friction between the tool and workpiece, improving chip evacuation and minimizing heat buildup for cooler, cleaner drilling.
Each bit is precision-ground to tight aerospace-grade tolerances, ensuring balance, concentricity, and superior performance. Available in letter-size increments, the Type 340-A series provides the precision sizing needed for machining, aerospace manufacturing, and high-tolerance metalworking.
Key Features:
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Manufactured to NAS 907A aerospace-grade standards
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Premium high-speed steel (HSS) for superior strength and longevity
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118° standard point for smooth, accurate hole starts
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Black oxide finish improves wear resistance and cutting efficiency
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Precision-ground flutes for consistent performance and chip removal
When accuracy, strength, and reliability are non-negotiable, the Norseman Drill & Tool Letter Sizes Type 340-A Twist Drill Bit with a black oxide finish delivers unmatched performance and American-made quality trusted by professionals worldwide.
