Norseman Drill & Tool Wire Gauge Sizes Type 340-A Twist Drill Bit
Aerospace-Grade Precision and Long-Lasting Durability
The Norseman Drill & Tool Wire Gauge Sizes Type 340-A Twist Drill Bit is engineered for professionals who require uncompromising accuracy, strength, and reliability in precision drilling applications. Proudly made in the USA and manufactured to strict NAS 907A aerospace specifications, this premium drill bit delivers exceptional performance for machinists, fabricators, maintenance teams, and aerospace manufacturers.
Built for Accuracy and Superior Cutting Performance
Constructed from premium high-speed steel (HSS), the Type 340-A offers outstanding toughness, edge retention, and cutting efficiency. It excels when drilling steel, aluminum, brass, copper, and other non-ferrous metals, ensuring clean, accurate hole formation with consistent results. The 118° standard point geometry provides smooth, controlled starts with minimal walking—ideal for high-tolerance machining.
Enhanced Durability with Black Oxide Protection
A black oxide finish boosts wear resistance and lubricity, reducing friction while improving chip flow for cooler, more efficient drilling. This advanced surface treatment helps extend tool life and maintains performance even in continuous-use or production environments. Reduced heat buildup means longer-lasting edges and cleaner drilling results.
Precision-Ground for Aerospace-Grade Consistency
Each bit is precision-ground to exacting aerospace tolerances, delivering exceptional concentricity, balance, and hole accuracy. Offered in wire gauge sizes, the 340-A series provides the fine incremental sizing required for detail-critical applications in aerospace, defense, electronics, and precision manufacturing.
Key Features
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Manufactured to NAS 907A aerospace-grade standards
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Premium high-speed steel (HSS) for superior durability and performance
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118° standard point for accurate starts and stable cutting
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Black oxide finish enhances wear resistance, lubricity, and heat control
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Precision-ground flutes ensure smooth chip evacuation and consistent accuracy
For mission-critical precision and American-made reliability, the Norseman Type 340-A Wire Gauge Twist Drill Bit is the trusted choice for professionals who demand the highest level of performance in every drilling task.
