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Drill America #1 x 12" High Speed Steel Aircraft Extension Drill Bit (Pack of 12), D/AA Series

KWD 38.500
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Special 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

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.

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