Surface Treated Flutes, Silver and Deming, Cobalt Steel, Bronze Color Oxide, Reduced Shank, Silver and Deming, Size: 31/64, Dec. Equivalent .4844, Flute Length 4-3/8, Overall Length 5-7/8, M42 Cobalt, Premium Grade Steel
  • Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys
  • Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools
  • Round shanks allow use with a wide variety of toolholding systems
  • When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
  • Manufactured to National Aerospace standard 907
MaterialCobalt Steel
Size31/64" X3/8" Shank

31/64" Cobalt Reduced Shank Drill Bit, 3/8" Shank, Drill America, D/ACO3/8X31/64

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