Cobalt Bits



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Cobalt Bits Features:

  • Constructed of M-35 High Speed Steel
  • Contains five percent cobalt steel for super abrasive resistance in tough metals
  • Heavy-duty web construction for strength and durability
  • Heavy-duty spiral flute design produces faster chip ejection
  • Shorter cutting lips reduce torque for drilling in high tensile strength materials
  • 135° split point allows drilling to start on contact, minimising bit ‘walk’ and reduces feed pressure for easier penetration.
   
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NOTE: Not all products are currently listed on our website. If you don't see the specific product you are looking for, please contact our Customer Service Department for assistance.

Item #TypeDiameterDecimal Equiv.Overall LengthFlute Length
COB0010MEMetric1.00mm-34mm12mm
COB0015MEMetric1.50mm-40mm18mm
COB0020MEMetric2.00mm-49mm24mm
COB0025MEMetric2.50mm-57mm30mm
COB0030MEMetric2.00mm-61mm33mm
COB0035MEMetric3.50mm-70mm39mm
COB0040MEMetric4.00mm-75mm43mm
COB0045MEMetric4.50mm-80mm47mm
COB0050MEMetric5.00mm-86mm52mm
COB0055MEMetric5.50mm-93mm57mm
COB0060MEMetric6.00mm-93mm57mm
COB0065MEMetric6.50mm-101mm63mm
COB0070MEMetric7.00mm-109mm69mm
COB0075MEMetric7.50mm-109mm69mm
COB0080MEMetric8.00mm-117mm75mm
COB0085MEMetric8.50mm-117mm75mm
COB0090MEMetric9.00mm-125mm81mm
COB0095MEMetric9.50mm-125mm81mm
COB0100MEMetric10.00mm-133mm87mm
COB0105MEMetric10.50mm-133mm87mm
COB0110MEMetric11.00mm-142mm94mm
COB0115MEMetric11.50mm-142mm94mm
COB0120MEMetric12.00mm-151mm101mm
COB0125MEMetric12.50mm-151mm101mm
COB130MEMetric13.00mm-160mm108mm
COB0116IMImperial1/16"0.061-7/8"7/8"
COB0564IMImperial5/64"0.082"1"
COB0332IMImperial3/32"0.092-1/4"1-1/8"
COB0764IMImperial7/64"0.112-5/8"1-1/2"
COB0018IMImperial1/8"0.132-3/4"1-5/8"
COB0964IMImperial9/64"0.142-7/8"1-3/4"
COB0532IMImperial5/32"0.163-1/8"2"
COB1164IMImperial11/64"0.173-1/4"2-1/8"
COB0316IMImperial3/16"0.193-1/2"2-5/16"
COB1364IMImperial13/64"0.203-5/8"2-7/16"
COB0732IMImperial7/32"0.223-3/4"2-1/2"
COB1564IMImperial15/64"0.233-7/8"2-5/8"
COB0014IMImperial1/4"0.254"2-3/4"
COB1764IMImperial17/64"0.274-1/8"2-7/8"
COB0932IMImperial9/32"0.284-1/4"2-15/16"
COB1964IMImperial19/64"0.304-3/8"3-1/16"
COB0516IMImperial5/16"0.314-1/2"3-3/16"
COB2164IMImperial21/64"0.334-5/8"3-5/16"
COB1132IMImperial11/32"0.344-3/4"3-7/16"
COB2364IMImperial23/64"0.364-7/8"3-1/2"
COB0038IMImperial3/8"0.385"3-5/8"
COB2564IMImperial25/64"0.395-1/8"3-3/4"
COB1332IMImperial13/32"0.415-1/4"3-7/8"
COB2764IMImperial27/64"0.425-3/8"3-15/16
COB0716IMImperial7/16"0.445-1/2"4-1/16"
COB2964IMImperial29/64"0.455-5/8"4-3/16"
COB1532IMImperial15/32"0.475-3/4"4-5/16"
COB3164IMImperial31/64"0.485-7/8"4-3/8"
COB0012IMImperial1/2"0.506"4-1/2"