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R10CO 5/16" Cobalt Jobber Drill 135°
Catalog Sheet Catalog Sheet
Technical Specs Technical Specs
Cutting Tools/Drill Bits/Jobber Length Drills

R10CO 5/16" Cobalt Jobber Drill 135°

Brand: Precision Twist Drill, Fractional: 5/16", Decimal: 0.3125", Flute Length: 3-3/16", OAL: 4-1/2", Type: Heavy-Duty, Type J, Point: 135°, Series: R10CO, Material: Cobalt HSS, Finish: Bronze Oxide, Shank: 0.3125"
Item #: PTD 010320
Precision R10CO Cobalt Jobber Drills
Fractional Sizes

  • Low thrust design self centering Split Point for
  • easier penetration.
  • Cobalt base material with Bronze tempered for wear resistance & lubricity.
  • Enhanced tool life in ferrous materials

Cobalt high speed steel. Heavy-duty. NAS 907, Type J, 135° self-centering split point. Sizes smaller than 3/64" not split point.

$7.36
In Stock
UOM: EA
Order multiples of 6
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Item Specifications

  • Precision Twist Drill
  • 5998209
  • 0.3125"
  • Jobber Length
  • 3-3/16"
  • 5/16"
  • Cobalt HSS
  • 4-1/2"
  • 135
  • R10CO
  • 0.3125"
  • Bronze Oxide