High Speed Steel Aircraft Extension Drills
TTC PRODUCTION High Speed Steel Aircraft Extension Drills - Size : #55   Flute Length : 7/8   Drill Point Angle: 118°   Flute Shape: Normal spiral - helical flutes   Overall Length : 6

High Speed Steel Aircraft Extension Drills

Item #: 01-114-155
Size: #55
Size Type: Number
Overall Length: 6"

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  • For general purpose deep drilling in normal steels, cast iron, and a variety of other ferrous and non-ferrous metals and alloys.


  • Right hand (clockwise rotation) cutting direction.
  • Standard two flute design.
  • Normal spiral - helical flutes.

Technical Data

  • Cylindrically ground.
  • Manufactured from high speed steel.
  • Bright finish or black finish depending upon our stock.
TTC PROD 118° Point HSS Ground Bright 6" Overall Long Wire Gage Aircraft Extension Drills
Product Specifications
Size #55
Size Type Number
Overall Length 6"
Drill Point Angle 118°
Tool Material High Speed Steel
Finish Coating Bright or Black Finish
Drill Grade General Purpose
Drill Type Aircraft Extension
Flute Length 7/8"
Flute Shape Normal Spiral - Helical
Hardness 58 to 60 RC
Manufacturing Method Cylindrically ground
No. of Flutes 2
Point Sharpening Type Normal Point
Shank Style Straight Shank
Type High Speed Steel Aircraft Extension Drills
Weight 0.0062 lbs.
Country of Origin Import

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