27/64" X 12" Aircraft Extension Drill Bit | HSS | D/AA/CX1227/64
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27/64" X 12" Aircraft Extension Drill Bit | HSS | D/AA/CX1227/64

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27/64" X 12" Aircraft Extension Drill Bit | HSS | D/AA/CX1227/64

Drill AmericaSKU: D/AA/CX1227/64
Price:
$18.86 $34.67per 1( $18.86 each)
Pieces 1
Measurement type Inch
Diameter 27/64"
Length 12
Material High Speed Steel
Finish Black Oxide
Flute length 3-15/16
Point type Split Point
Shank Round
Size 27/64
Weight 1.0 lb

WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to https://www.P65Warnings.ca.gov.

Description

[1 PC] 27/64" X 12" HSS Aircraft Extension Drill Bit, D/AA/C is a long-reach drill bit designed for deep-hole metal drilling in aircraft maintenance and fabrication tasks.

Specs

  • Diameter: 27/64" (0.4219")
  • Overall length: 12"
  • Material: High-Speed Steel (HSS)
  • Bit type: Aircraft extension drill bit
  • Designation: D/AA/C
  • Package: 1 piece

Features

  • Long-reach design: 12" length enables drilling deep or recessed holes in metal structures.
  • Wear resistance and heat tolerance: HSS construction supports sustained drilling in aluminum alloys and mild steel used in aircraft components.
  • Extension-ready geometry: Supports secure seating in long-reach chucks and holders for extended drilling tasks.
  • Precision geometry: Aims for straight holes with reduced drift in metal work.
  • Ideal use cases: Skin, rib, bulkhead, and access-hole drilling in aircraft maintenance scenarios; suitable for metalworking and fabrication tasks that require a 27/64" hole.

Physical

  • Diameter: 27/64" (0.4219")
  • Length: 12" overall
  • Material: High-Speed Steel (HSS)
  • Bit type: Aircraft extension drill bit; D/AA/C designation
  • Package: 1 piece

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800-222-0324

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