Norseman Drill & Tool Fractional Sizes Type 340-A Twist Drill Bit
Norseman Drill & Tool Fractional Sizes Type 340-A Twist Drill Bit: Aerospace-Grade Precision with Superior Wear Resistance
The Norseman Drill & Tool Fractional Sizes Type 340-A Twist Drill Bit delivers unmatched strength, precision, and reliability for professional machinists, fabricators, and maintenance crews. Proudly made in the USA, this premium-quality drill bit is manufactured to NAS 907A aerospace specifications, ensuring the highest level of accuracy, durability, and performance in critical drilling applications.
Constructed from premium high-speed steel (HSS), the Type 340-A is engineered to provide superior toughness and cutting efficiency when drilling through materials such as steel, aluminum, brass, and other non-ferrous metals. Its 118° standard point geometry offers smooth, accurate starts and controlled cutting action, minimizing walking and ensuring clean, precise holes.
The black oxide finish adds a crucial layer of performance enhancement—improving lubricity, reducing friction, and increasing wear resistance for longer tool life. This durable finish also improves chip flow and heat dissipation, allowing the bit to maintain cutting edge integrity even under high-speed or continuous-use conditions.
Each bit is precision-ground to aerospace-grade tolerances, guaranteeing balance, accuracy, and consistent results with every use. Available in fractional Fractional sizes, the Type 340-A provides reliable drilling performance across a wide range of materials and machine types.
Key Features:
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Manufactured to NAS 907A aerospace-grade specifications
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Premium HSS construction for strength and durability
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118° standard point for smooth, accurate hole starts
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Black oxide finish enhances wear resistance and lubricity
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Precision-ground for balance, accuracy, and superior performance
For precision, strength, and long-lasting reliability, the Norseman Drill & Tool Fractional Sizes Type 340-A Twist Drill Bit with its black oxide finish delivers the professional-grade performance trusted in aerospace and industrial applications worldwide.
