Carbide Tip Silver & Demming ( Bowling Ball ) Drill

 

163both.jpg (13916 bytes)

Style 163
  • Not recommended where precision hole sizing or close concentricity is required.
  • Right hand spiral, right hand cut.
  • Brazed carbide tip on high helix masonry flute is ideal for the economic drilling of carbon, hard plastics, concrete, plaster, wall board, stone, brick and asphalt.
 
Diameter Tolerance
Nominal Size Cutting Æ Shank Æ
Inch mm Inch mm
All +.0000 +.0000 +.0000 +.0000
-.0015 -.0381 -.0040 -.1016
All sizes 1/2" (12.7 mm) shank Ø.

 

EDP # Cutting Æ "D" Decimal Equiv. Overall Length "A" Flute Length "B" Usable Flute at Full Regrind "F" Shank Diameter "C"
Inch mm Inch Inch mm Inch mm Inch mm Inch mm
16305000 1/2 12.7 .5000 6-1/4 159 4-1/4 108 3.8 95 1/2 12.7
16305312 17/32 13.492 .5312 6-1/4 159 4-1/4 108 3.8 95 1/2 12.7
16305469 35/64 13.891 .5469 6-1/4 159 4-1/4 108 3.7 95 1/2 12.7
16305625 9/16 14.288 .5625 6-1/4 159 4-1/4 108 3.7 95 1/2 12.7
16305781 37/64 14.684 .5781 6-1/4 159 4-1/4 108 3.7 95 1/2 12.7
16305938 19/32 15.083 .5938 6-1/4 159 4-1/4 108 3.7 95 1/2 12.7
16306094 39/64 15.479 .6094 6-1/4 159 4-1/4 108 3.7 93 1/2 12.7
16306250 5/8 15.875 .6250 6-1/4 159 4-1/4 108 3.7 93 1/2 12.7
16306406 41/64 16.271 .6406 6-1/4 159 4-1/4 108 3.7 93 1/2 12.7
16306562 21/32 16.667 .6562 6-1/4 159 4-1/4 108 3.7 93 1/2 12.7
16306719 43/64 17.066 .6719 6-1/4 159 4-1/4 108 3.7 93 1/2 12.7
16306875 11/16 17.463 .6875 6-1/4 159 4-1/4 108 3.7 93 1/2 12.7
EDP # Cutting Æ "D" Decimal Equiv. Overall Length "A" Flute Length "B" Usable Flute at Full Regrind "F" Shank Diameter "C"
Inch mm Inch Inch mm Inch mm Inch mm Inch mm
16307031 45/64 17.859 .7031 6-1/4 159 4-1/4 108 3.7 93 1/2 12.7
16307188 23/32 18.258 .7188 6-1/4 159 4-1/4 108 3.7 93 1/2 12.7
16307344 47/64 18.654 .7344 6-1/4 159 4-1/4 108 3.7 93 1/2 12.7
16307500 3/4 19.05 .7500 6-1/4 159 4-1/4 108 3.7 93 1/2 12.7
16307656 49/64 19.446 .7656 6-1/4 159 4-1/4 108 3.7 93 1/2 12.7
16307812 25/32 19.842 .7812 6-1/4 159 4-1/4 108 3.7 93 1/2 12.7
16307969 51/64 20.241 .7969 6-1/4 159 4-1/4 108 3.6 91 1/2 12.7
16308125 13/16 20.638 .8125 6-1/4 159 4-1/4 108 3.6 91 1/2 12.7
16308281 53/64 21.034 .8281 6-1/4 159 4-1/4 108 3.6 91 1/2 12.7
16308438 27/32 21.433 .8438 6-1/4 159 4-1/4 108 3.6 91 1/2 12.7
16308594 55/64 21.829 .8594 6-1/4 159 4-1/4 108 3.6 91 1/2 12.7
16308750 7/8 22.225 .8750 6-1/4 159 4-1/4 108 3.6 91 1/2 12.7
EDP # Cutting Æ "D" Decimal Equiv. Overall Length "A" Flute Length "B" Usable Flute at Full Regrind "F" Shank Diameter "C"
Inch mm Inch Inch mm Inch mm Inch mm Inch mm
16308906 57/64 22.621 .8906 6-1/4 159 4-1/4 108 3.6 91 1/2 12.7
16309062 29/32 23.017 .9062 6-1/4 159 4-1/4 108 3.6 91 1/2 12.7
16309219 59/64 23.416 .9219 6-1/4 159 4-1/4 108 3.6 91 1/2 12.7
16309375 15/16 23.813 .9375 6-1/4 159 4-1/4 108 3.6 91 1/2 12.7
16309531 61/64 24.209 .9531 6-1/4 159 4-1/4 108 3.6 91 1/2 12.7
16309688 31/32 24.606 .9688 6-1/4 159 4-1/4 108 3.6 91 1/2 12.7
16309844 63/64 25.003 .9844 6-1/4 159 4-1/4 108 3.6 91 1/2 12.7
16310000 1 25.4 1.0000 6-1/4 159 4-1/4 108 3.6 91 1/2 12.7
16310156 1-1/64 25.796 1.0156 6-1/4 159 4-1/4 108 3.5 90 1/2 12.7
16310312 1-1/32 26.192 1.0312 6-1/4 159 4-1/4 108 3.5 90 1/2 12.7
16310469 1-3/64 26.591 1.0469 6-1/4 159 4-1/4 108 3.5 90 1/2 12.7
16310625 1-1/16 26.988 1.0625 6-1/4 159 4-1/4 108 3.5 90 1/2 12.7
EDP # Cutting Æ "D" Decimal Equiv. Overall Length "A" Flute Length "B" Usable Flute at Full Regrind "F" Shank Diameter "C"
Inch mm Inch Inch mm Inch mm Inch mm Inch mm
16310781 1-5/64 27.384 1.0781 6-1/4 159 4-1/4 108 3.5 90 1/2 12.7
16310938 1-3/32 27.783 1.0938 6-1/4 159 4-1/4 108 3.5 90 1/2 12.7
16311094 1-7/64 28.179 1.1094 6-1/4 159 4-1/4 108 3.5 90 1/2 12.7
16311250 1-1/8 28.575 1.1250 6-1/4 159 4-1/4 108 3.5 90 1/2 12.7
16312500 1-1/4 31.75 1.2500 6-1/4 159 4-1/4 108 3.5 89 1/2 12.7
16313750 1-3/8 34.925 1.3750 6-1/4 159 4-1/4 108 3.4 87 1/2 12.7

 

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