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Cutting and Threading > Drill Bits - Individual > Mountain 21/64" Black Oxide Drill B

Mountain 21/64" Black Oxide Drill Bit

Mountain 21/64\" Black Oxide Drill Bit

Features and Benefits:

  • Black Oxide treated for wear resistance and greater lubricity
  • Made from premium grade high speed steel
  • 135 degree split point
  • Designed to drill common steel (flat bar, angle iron, tubing), wood and plastic
  • Manufactured to Aerospace NAS 907-B specifications

Black Oxide drill bits are manufactured from industrial high speed steel, surface treated for high performance and long life. Also no center punch needed: Mountain Quick-cut points are self centering and penetrate faster with less pressure, will not "walk" or "wander" at the starting surface. Made in the USA.

  • Shipping Weight: 0.27lbs
  • Manufactured by: Mountain
  • Toolsource #: 155365
  • Manufacturers Part #: 55421
  • Also Known As: MTN55421

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