12-Pack D/AA Series 9/32" x 12" High Speed Steel Aircraft Extension Drill Bits by Drill America - Perfect for Aerospace, Metalworking & Industrial Applications
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SKU:74659569
Product Description
Drill America D/AA/C series High-Speed Steel premium quality drill bit is manufactured to National Aerospace Standard 907. 135 degrees split point is self-centering and reduces thrust. Ideal for drilling in mild steels where extra length for reach is required. They have a black oxide surface treatment that is abrasion resistant, reduces chip welding and improves chip flow.
Product Features
High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance
Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge
Round shanks allow use with a wide variety of toolholding systems
When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
Manufactured to National Aerospace Standard 907
Customer Reviews
Good bits but i bought the wrong size
