Monday, March 28, 2011

Chicago Latrobe 550 Cobalt Steel Jobber Drill Bit, Gold Oxide Coated, Round Shank, 135 Degree Split Point, 11/16" Size

Chicago Latrobe 550 Cobalt Steel Jobber Drill Bit, Gold Oxide Coated, Round Shank, 135 Degree Split Point, 11/16" Size Reviews


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Chicago Latrobe 550 Cobalt Steel Jobber Drill Bit, Gold Oxide Coated, Round Shank, 135 Degree Split Point, 11/16" Size Feature

  • Heavy-duty construction for drilling in tough, high-tensile, and work-hardening materials under extreme operating conditions
  • Manufactured from premium 8 percent cobalt (M42) high-speed steel increasing hot hardness and extending drill wear life
  • 135 degree P3 split point is self-centering for reduced thrust and easier penetration
  • Manufactured to NAS 907 type J aerospace specifications
  • Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools
Cobalt Heavy-duty jobber length drill for working on stainless steel, tool steel, alloy steel and titanium. 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.


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Mar 28, 2011 13:27:05

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