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  • 5/16" x 6"  Black Oxide Extension Drill Bit

5/16" x 6" Black Oxide Extension Drill Bit

Item# AEDB070 | UPC 659452

Quick Overview

5/16" x 6" Black Oxide Extension Drill Bit
  • Buy 6 for $7.20 each and save 15%
  • Buy 24 for $6.35 each and save 26%

Availability: In stock*

*Prices and inventory are based out of our Glassboro, NJ location. Prices and inventory can vary between locations. Call your local store to confirm pricing & availability.


  • Drill Diameter: 5/16"
  • Overall Length: 6"
  • Flute Length: 3-3/16""
  • Material: High speed steel
  • Coating/Finish: Black oxide
  • 135 Degree split point
  • Heavy-duty construction
  • 6" Aircraft extension
  • 135 Degree split point is self-centering for reduced thrust and easier penetration
  • Manufactured from high-speed steel for a great combination of strength, heat resistance & wear resistance
  • Designed for general purpose drilling in steel, cast iron, and a variety of other ferrous and non-ferrous metals and alloys
  • Black oxide coating for corrosion resistance
  • Aircraft extension drill bits are designed for machine drilling and portable drilling to drill in hard-to-reach areas

Additional Information

Item Number AEDB070
UPC 659452
Weight (lbs) 0.1000
Manufacturer Domestic