Type B HSS 6” Extension Aircraft Drills - Letter

Designed for those applications where standard drills are not long enough to reach the workpiece. These HSS letter size drills are made to NAS 907 specifications on the drill point. The heavy duty flute construction and surface treatment are features that make this a good drill for hard to reach holes in mild steel, aluminum and stainless steel.

  • Manufactured to A.I.A. NAS-907 standards
  • Recommended for use in power and portable drilling of hard steels, stainless steels, titanium and other hard materials
  • 6" length for hard to reach surfaces
  • 135 degree split point for easy starting

Although these are made from HSS, the unique design of 135 degree split point, heavy web construction and nitride and oxide surface finish  make this an economical drill for aircraft and other difficult drilling operations. These 6" extension drills are made for fast starting rapid chip ejection.