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Short length provides rigidity, minimizing deflection. Screw Machine Drill, Aircraft, List Number 159, Number of Pieces 1, Heavy Duty Grade, High Speed Steel, Black Oxide Finish, Conventional Point, Drill Point (Deg.) 135, Wire Size #55, Decimal Equivalent 0.0520, Flute Length (In.) 5/8, Overall Length (In.) 1-5/8, Shank Dia. (In.) 0.0520, For Alloy, Carbon And Tool Steels And Cast Iron, Meets/Exceeds National Aerospace Standards (NAS) 907, Type C
  • Screw Machine Length Drill Bits and Sets

Screw Machine Drill Bit, #55, High Speed Steel, Black Oxide, List Number 159

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