Drill America 17/64" x 6" High Speed Steel Aircraft Extension Drill Bit (Pack of 12), D/AA Series

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Drill America 17/64" x 6" High Speed Steel Aircraft 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

About Drill America 17/64" X 6" High Speed Steel Aircraft

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.