High Speed Steel Aircraft Drill Bit, D/AA Series (Pack of 12)

The D/AA/C series High-Speed Steel premium quality drill bits from Drill America are manufactured to the National Aerospace Standard 907. These drill bits feature a 135-degree split point that is self-centering and reduces thrust, making them ideal for drilling in mild steels where extra length for reach is required.

The drill bits have a black oxide surface treatment that is abrasion resistant, reduces chip welding, and improves chip flow. This surface treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge, enhancing the tool's performance.

The use of high-speed steel in the construction of these drill bits makes them suitable for most general-purpose applications, offering a combination of hardness and toughness for wear resistance. The round shanks allow for use with a wide variety of toolholding systems, providing greater versatility.

When run in a counterclockwise direction (right-hand cut), the spiral fluted tools evacuate chips up and out of the cut, reducing clogging and improving the overall drilling experience.

The Drill America D/AA/C series High-Speed Steel premium quality drill bits are manufactured to the rigorous standards set by the National Aerospace Standard 907, ensuring consistent quality and performance.

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