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Terms
  • Product Image-Style 290 Carbide Tip, Kooltwist®, Heavy Duty, Long Series Drill
  • Dimensional Drawing
Submicron carbide tipped coolant fed oil hole construction cuts best in cast irons, powdered metals, brass, bronze, free machining stainless steels, titaniums and some high temperature alloys.
  • Heavy web slow spiral for maximum rigidity.
  • Right hand spiral, right hand cut.
  • Self centering 125° four facet point is easily re-sharpened on standard point grinding equipment.
  • 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)

Usable Flute at Full Regrind "F" (Inch)

Usable Flute at Full Regrind "F" (mm)

29002500 N/A 1/4 N/A 6.35 N/A 0.2500 N/A 6 1/8 N/A 156 N/A 3 3/4 N/A 95 N/A 3.1000 N/A 79
29002812 N/A 9/32 N/A 7.142 N/A 0.2812 N/A 6 1/4 N/A 159 N/A 3 7/8 N/A 98 N/A 3.2000 N/A 81
29003125 N/A 5/16 N/A 7.938 N/A 0.3125 N/A 6 3/8 N/A 162 N/A 4 N/A 102 N/A 3.3000 N/A 83
29003438 N/A 11/32 N/A 8.731 N/A 0.3438 N/A 6 1/2 N/A 165 N/A 4 1/8 N/A 105 N/A 3.4000 N/A 86
29003750 N/A 3/8 N/A 9.525 N/A 0.3750 N/A 6 3/4 N/A 171 N/A 4 1/4 N/A 108 N/A 3.5000 N/A 88
29004062 N/A 13/32 N/A 10.317 N/A 0.4062 N/A 7 N/A 178 N/A 4 3/8 N/A 111 N/A 3.6000 N/A 90
29004375 N/A 7/16 N/A 11.113 N/A 0.4375 N/A 7 1/4 N/A 184 N/A 4 5/8 N/A 117 N/A 3.8000 N/A 96
29004688 N/A 15/32 N/A 11.906 N/A 0.4688 N/A 7 1/2 N/A 191 N/A 4 7/8 N/A 124 N/A 4.0000 N/A 102
29005000 N/A 1/2 N/A 12.7 N/A 0.5000 N/A 7 3/4 N/A 197 N/A 5 N/A 127 N/A 4.1000 N/A 104
29005312 N/A 17/32 N/A 13.492 N/A 0.5312 N/A 8 N/A 203 N/A 5 1/4 N/A 133 N/A 4.3000 N/A 109
29005625 N/A 9/16 N/A 14.288 N/A 0.5625 N/A 8 1/4 N/A 210 N/A 5 3/8 N/A 137 N/A 4.4000 N/A 112
29005938 N/A 19/32 N/A 15.083 N/A 0.5938 N/A 8 1/2 N/A 216 N/A 5 5/8 N/A 143 N/A 4.6000 N/A 116
29006250 N/A 5/8 N/A 15.875 N/A 0.6250 N/A 8 3/4 N/A 222 N/A 5 3/4 N/A 146 N/A 4.7000 N/A 118
29006562 N/A 21/32 N/A 16.667 N/A 0.6562 N/A 9 N/A 229 N/A 5 7/8 N/A 149 N/A 4.8000 N/A 121
29006875 N/A 11/16 N/A 17.463 N/A 0.6875 N/A 9 1/4 N/A 235 N/A 6 N/A 152 N/A 4.8000 N/A 123
29007188 N/A 23/32 N/A 18.258 N/A 0.7188 N/A 9 1/2 N/A 241 N/A 6 3/16 N/A 157 N/A 5.0000 N/A 126
29007500 N/A 3/4 N/A 19.05 N/A 0.7500 N/A 9 3/4 N/A 248 N/A 6 3/8 N/A 162 N/A 5.1000 N/A 131
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