Carbide Tip Heavy Duty Taper Shank Core Drill
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Style 410
  • C2/K20 fine grain carbide tipped core drills have hardened tool steel bodies for enlarging pre-drilled, punched, or cored holes in aluminum casting, bronze, cast and ductile iron, and other abrasive materials.
  • Four flute core drills remove more material than a reamer, removing up to 30% of the hole diameter while tending to straighten the hole.
  • The multiple flute cutting action often eliminates the need for final reaming or boring.
  • Right hand spiral, right hand cut.
  • Straight shank and "center cutting" versions are available as specials.
Diameter Tolerance
Nominal Size Cutting Æ
Inch mm
All +.0000 +0.000
-.0010 -0.025
 

 

EDP # Cutting Æ "D" Dec Equiv. Overall Length "A" Flute Length "B" Shk "C" Grind Down Range Minimum Cutting Diameter Usable Flute at Full Regrind "F" Ref. Tip Lng.
Inch mm Inch Inch mm Inch mm MT Inch mm Inch mm Inch mm Inch
41005000 1/2 12.7 .5000 8-1/4 210 4-3/8 111 2 .4721-.5000 11.991-12.7 .350 8.89 3.9 99 .75
41005312 17/32 13.492 .5312 8-1/4 210 4-3/8 111 2 .5001-.5312 12.703-13.492 .371 9.44 3.9 99 .75
41005625 9/16 14.288 .5625 8-1/4 210 4-3/8 111 2 .5313-.5625 13.495-14.288 .393 10.00 3.9 99 .75
41005938 19/32 15.083 .5938 8-1/4 210 4-3/8 111 2 .5626-.5938 14.29-15.083 .415 10.56 3.9 99 .75
41006250 5/8 15.875 .6250 8-1/4 210 4-3/8 111 2 .5939-.6250 15.085-15.875 .437 11.11 3.9 99 .75
41006562 21/32 16.667 .6562 8-1/4 210 4-3/8 111 2 .6251-.6562 15.858-16.667 .459 11.67 3.9 99 .75
41006875 11/16 17.462 .6875 8-1/4 210 4-3/8 111 2 .6563-.6875 16.67-17.463 .481 12.22 3.9 99 .88
41007188 23/32 18.258 .7188 8-1/4 210 4-3/8 111 2 .6876-.7188 17.465-18.258 .503 12.78 3.9 99 .88
41007500 3/4 19.05 .7500 8-1/4 210 4-3/8 111 2 .7189-.7500 18.26-19.05 .525 13.34 3.9 99 .88
41007812 25/32 19.842 .7812 8-1/4 210 4-3/8 111 2 .7501-.7840 19.052-19.914 .546 13.89 3.9 99 .88
41008125 13/16 20.638 .8125 9-1/2 241 4-7/8 124 3 .7841-.8125 19.916-20.638 .568 14.45 4.3 109 .88
41008438 27/32 21.433 .8438 9-1/2 241 4-7/8 124 3 .8126-.8438 20.64-21.431 .590 15.00 4.3 109 .88
EDP # Cutting Æ "D" Dec Equiv. Overall Length "A" Flute Length "B" Shk "C" Grind Down Range Minimum Cutting Diameter Usable Flute at Full Regrind "F" Ref. Tip Lng.
Inch mm Inch Inch mm Inch mm MT Inch mm Inch mm Inch mm Inch
41008750 7/8 22.225 .8750 9-1/2 241 4-7/8 124 3 .8439-.8750 21.435-22.225 .612 15.56 4.3 109 .88
41009062 29/32 23.017 .9062 9-1/2 241 4-7/8 124 3 .8751-.9062 22.228-23.813 .634 16.11 4.3 109 .88
41009375 15/16 23.813 .9375 9-1/2 241 4-7/8 124 3 .9063-.9375 23.020-23.813 .656 16.67 4.3 109 .88
41009688 31/32 24.608 .9688 9-1/2 241 4-7/8 124 3 .9376-.9688 23.815-24.608 .678 17.23 4.3 109 .88
41010000 1 25.4 1.0000 9-1/2 241 4-7/8 124 3 .9689-1.0000 24.61-25.4 .700 17.78 4.3 109 .88
41010625 1-1/16 26.988 1.0625 9-1/2 241 4-7/8 124 3 1.0313-1.0660 26.195-27.076 .746 18.95 4.3 109 .88
41011250 1-1/8 28.575 1.1250 10-1/2 267 4-7/8 124 4 1.0939-1.1250 27.785-28.575 .787 20.00 4.2 107 1

 

 
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Last Updated on 03/04/02
By Bob Novak Media Development
Copyright Ó1999 CJT KOOLCARB Inc.