Drill Bits - Augers - Taps - Chamfer  /  Cobalt Drill Bits - Fractional
 

25/64
25/64" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
$8.75
13/32
13/32" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
$8.25
27/64
27/64" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
$9.75
7/16
7/16" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
$12.50
15/32
15/32" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
$13.50
1/2
1/2" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
$14.75

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Cobalt Jobber Drill Bits, Fractional, Drill America

Cobalt Jobber Drills Key Features.

  • Manufactured to National Aerospace Standard 907.
  • Made of Heat Resistant Cobalt
  • They Display Higher Red Hardness which Permits Speeds up to 30% Greater than High Speed Steel Drills.
  • Especially Effective in Drilling Tough, High Tensile Strength Materials like PH Stainless Steel, Inconel, and Titanium.
  • The 135° Split Point is Self-Centering and Reduces Thrust. Sizes Smaller than 1/16 Have the 118° Standard Point.

Our Cobalt Drill Bits are Designed to Drill Through the Hardest Materials Such as Stainless Steel, Spring Steel, and Titanium. Includes a 135° Split-Point that will Not Walk or Wander at the Starting Surface. A Combination of High Speed Steel and a Heavy-Duty Web Allows the Bit to Run Cool, Keeping the Cutting Edge Sharper Longer.