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Drill America 5/16' x 6' High Speed Steel Aircraft Extension Drill Bit, DWDA/C Series

4.5 (2) Write Review
Free shipping on orders over $29.99

$5.49

$ 2 .99 $2.99

In Stock

About this item

  • 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 tool holding 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


Drill America DWDA/C Series High-Speed Steel drill bit is manufactured to National Aerospace Standard 907. 135 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.


Sonny + Karina
Reviewed in the United States on July 25, 2024
First bit broken after 8 holes, second bit broken on the 1st hole. Unreal
CHARLES W DAVIS
Reviewed in the United States on June 8, 2024
Good Steel
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