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  • Product Image-Style 174 Solid Carbide, Koolcarb®, Intermediate Length Drill
  • Dimensional Drawing
Submicron carbide grade provides maximum wear resistance when cutting tool steels, titanium, cast aluminum, bronze, cast iron, plastics, and other abrasive materials.
  • Coolant feeding S.C. Koolcarb double margin drills provide excellent hole straightness and smoother finish.
  • 125° four facet web thinned point starts best into a larger point angle.
  • Carbide body increases penetration rate over gundrills for use on machining centers.
  • Smaller diameters available to 0.1181” (3.0 mm), larger diameters and step constructions available up to 0.9483” (25.0 mm).
  • Straight flute, right hand cut.
  • Allow 2.5 x Ø up to 1/4” (6.35mm), 2 x Øup to 7/16” (11.1mm) and over 7/16” allow 1.5 x Ø of flute for chip exit.
  • Some tool holders and stop screws with a single, central coolant hole may require a coolant groove be added to the shank end of the drill.
  • Shank Ø = Cutting Ø
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Item #

Cutting Ø "D" (Inch)

Cutting Ø "D" (mm)

Dec. Equiv. (Inch)

Overall Length "A" (Inch)

Overall Length "A" (mm)

Flute Length "B" (Inch)

Flute Length "B" (mm)

N/A 1/8 N/A 3.175 N/A 0.1250 N/A 4 1/4 N/A 108 N/A 1 13/16 N/A 46
N/A N/A 3.5 N/A 0.1378 N/A 4 7/16 N/A 113 N/A 2 N/A 51
N/A 9/64 N/A 3.571 N/A 0.1406 N/A 4 7/16 N/A 113 N/A 2 N/A 51
N/A 5/32 N/A 3.967 N/A 0.1562 N/A 4 21/32 N/A 118 N/A 2 7/32 N/A 56
N/A N/A 4 N/A 0.1575 N/A 4 21/32 N/A 118 N/A 2 7/32 N/A 56
N/A 11/64 N/A 4.366 N/A 0.1719 N/A 4 7/8 N/A 124 N/A 2 7/16 N/A 62
N/A N/A 4.5 N/A 0.1772 N/A 5 N/A 127 N/A 2 5/8 N/A 67
N/A 3/16 N/A 4.763 N/A 0.1875 N/A 5 N/A 127 N/A 2 5/8 N/A 67
N/A N/A 5 N/A 0.1969 N/A 5 1/4 N/A 133 N/A 2 13/16 N/A 71
N/A 13/64 N/A 5.159 N/A 0.2031 N/A 5 1/4 N/A 133 N/A 2 13/16 N/A 71
N/A N/A 5.5 N/A 0.2165 N/A 5 7/16 N/A 138 N/A 3 N/A 76
N/A 7/32 N/A 5.558 N/A 0.2188 N/A 5 7/16 N/A 138 N/A 3 N/A 76
N/A 1/4 N/A 5.954 N/A 0.2344 N/A 5 3/4 N/A 146 N/A 3 9/32 N/A 83
N/A N/A 6 N/A 0.2362 N/A 5 3/4 N/A 146 N/A 3 9/32 N/A 83
N/A 1/4 N/A 6.35 N/A 0.2500 N/A 5 7/8 N/A 149 N/A 3 7/16 N/A 87
N/A 17/64 N/A 6.746 N/A 0.2656 N/A 6 N/A 152 N/A 3 9/16 N/A 90
N/A 9/32 N/A 7.142 N/A 0.2812 N/A 6 N/A 152 N/A 3 9/16 N/A 90
N/A 19/64 N/A 7.547 N/A 0.2969 N/A 6 1/8 N/A 156 N/A 3 11/16 N/A 94
N/A 5/16 N/A 7.938 N/A 0.3125 N/A 6 1/8 N/A 156 N/A 3 11/16 N/A 94
N/A 21/64 N/A 8.334 N/A 0.3281 N/A 6 1/4 N/A 159 N/A 3 11/16 N/A 97
N/A 11/32 N/A 8.733 N/A 0.3438 N/A 6 1/4 N/A 159 N/A 3 11/16 N/A 97
N/A 23/64 N/A 9.129 N/A 0.3594 N/A 6 3/8 N/A 162 N/A 3 11/16 N/A 100
N/A 3/8 N/A 9.525 N/A 0.3750 N/A 6 3/8 N/A 162 N/A 3 11/16 N/A 100
N/A 25/64 N/A 9.921 N/A 0.3906 N/A 6 1/2 N/A 165 N/A 4 1/16 N/A 103
N/A 13/32 N/A 10.317 N/A 0.4062 N/A 6 1/2 N/A 165 N/A 4 1/16 N/A 103
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