Carbide Tip Kooltwistâ Common Shank Stub TiN Drill

 

297both.jpg (21163 bytes)

Style 297
  • Submicron carbide tipped coolant fed construction provides maximum wear resistance when cutting alloy steels, tool steels, free machining stainless steels, aluminum casting, bronze, cast iron and some nickel base high temperature alloys.
  • Stub length and self-centering 135° helical point eliminate the need for spot drilling.
  • Body diameter reduced to eliminate galling.
  • TiN coating adds lubricity and prevents edge build-up.
  • Heavy web slow spiral for maximum feed rates.
  • Right hand spiral, right hand cut.
  • Request intermediate sizes from grind down range.
  • Same style drill available with reduced shanks, see style 296.
 
Diameter Tolerance
Nominal Size Cutting Æ Shank Æ
Inch mm Inch mm
All +.0000 +0.000 +.0000 +0.000
-.0010 -0.025 -.0010 -0.025

  TiN Coated

Common Shank      

 

EDP Cutting Æ "D" Dec Equiv. Overall Length "A" Flute Length "B" Shank Diam. "C" Usable Flute at Full Regrind "F" Grind Down Range Ineffective Flute Length
Inch mm Inch Inch mm Inch mm Inch mm Inch mm Inch mm Inch mm
29702500 1/4 6.35 .2500 3-15/16 100 1-17/32 39 5/8   1 25 .2420-.2610 .6147-6.629 .32 8
29702559   6.5 .2559 3-15/16 100 1-17/32 39   16 1 25 .2420-.2610 .6147-6.629 .32 8
29702656 17/64 6.746 .2656 4 102 1-19/32 40 5/8   1.1 29 .2700-.2953 6.858-7.501 .34 9
29702756   7 .2756 4 102 1-19/32 40   16 1.1 29 .2700-.2953 6.858-7.501 .34 9
29702812 9/32 7.142 .2812 4 102 1-19/32 40 5/8   1.1 29 .2700-.2953 6.858-7.501 .34 9
29702953   7.5 .2953 4 102 1-19/32 40   16 1.1 29 .2700-.2953 6.858-7.501 .34 9
29702969 19/64 7.541 .2969 4-5/32 106 1-3/4 44 5/8   1.3 32 .2960-.3230 7.518-8.204 .37 9
29703125 5/16 7.938 .3125 4-5/32 106 1-3/4 44 5/8   1.3 32 .2960-.3230 7.518-8.204 .37 9
29703150   8 .3150 4-5/32 106 1-3/4 44   16 1.3 32 .2960-.3230 7.518-8.204 .37 9
29703281 21/64 8.334 .3281 4-11/32 110 1-15/16 49 5/8   1.4 35 .3280-.3550 8.331-9.017 .41 10
29703346   8.5 .3346 4-11/32 110 1-15/16 49   16 1.4 35 .3280-.3550 8.331-9.017 .41 10
29703438 11/32 8.733 .3438 4-11/32 110 1-15/16 49 5/8   1.4 35 .3280-.3550 8.331-9.017 .41 10
29703543   9 .3543 4-11/32 110 1-15/16 49   16 1.4 35 .3280-.3550 8.331-9.017 .41 10
29703594 23/64 9.129 .3594 4-17/32 115 2-1/8 54 5/8   1.5 38 .3551-.3850 9.02-9.779 .44 11
29703740   9.5 .3740 4-17/32 115 2-1/8 54   16 1.5 38 .3551-.3850 9.02-9.779 .44 11
29703750 3/8 9.525 .3750 4-17/32 115 2-1/8 54 5/8   1.5 38 .3551-.3850 9.02-9.779 .44 11
29703906 25/64 9.921 .3906 4-11/16 119 2-9/32 58 5/8   1.6 41 .3851-.4170 9.782-10.592 .47 12
29703937   10 .3937 4-11/16 119 2-9/32 58   16 1.6 41 .3851-.4170 9.782-10.592 .47 12
29704062 13/32 10.317 .4062 4-11/16 119 2-9/32 58 5/8   1.6 41 .3851-.4170 9.782-10.592 .47 12
29704134   10.5 .4134 4-11/16 119 2-9/32 58   16 1.6 41 .3851-.4170 9.782-10.592 .47 12
29704219 27/64 10.716 .4219 4-29/32 125 2-1/2 64 5/8   1.8 44 .4171-.4430 10.594-11.252 .50 13
29704331   11 .4331 4-29/32 125 2-1/2 64   16 1.8 44 .4171-.4430 10.594-11.252 .50 13
29704375 7/16 11.113 .4375 4-29/32 125 2-1/2 64 5/8   1.8 44 .4171-.4430 10.594-11.252 .50 13
29704528   11.5 .4528 5-1/16 129 2-21/32 67   16 1.9 48 .4431-.4740 11.255-12.04 .53 13
29704531 29/64 11.509 .4531 5-1/16 129 2-21/32 67 5/8   1.9 48 .4431-.4740 11.255-12.04 .53 13
29704688 15/32 11.908 .4688 5-1/16 129 2-21/32 67 5/8   1.9 48 .4431-.4740 11.255-12.04 .53 13
29704724   12 .4724 5-1/16 129 2-21/32 67   16 1.9 48 .4431-.4740 11.255-12.04 .53 13
29704844 31/64 12.304 .4844 5-7/32 133 2-13/16 71 5/8   2 51 .4741-.5060 12.042-12.852 .56 14
29704921   12.5 .4921 5-7/32 133 2-13/16 71   16 2 51 .4741-.5060 12.042-12.852 .56 14
29705000 1/2 12.7 .5000 5-7/32 133 2-13/16 71 5/8   2 51 .4741-.5060 12.042-12.852 .56 14
29705118   13 .5118 5-13/32 137 3 76   16 2.1 54 .5061-.5360 12.855-13.614 .58 15
29705156 33/64 13.096 .5156 5-13/32 137 3 76 5/8   2.1 54 .5061-.5360 12.855-13.614 .58 15
29705312 17/32 13.492 .5312 5-13/32 137 3 76 5/8   2.1 54 .5061-.5360 12.855-13.614 .58 15
29705315   13.5 .5315 5-13/32 137 3 76   16 2.1 54 .5061-.5360 12.855-13.614 .58 15
29705469 35/64 13.891 .5469 5-17/32 140 3-1/8 79 5/8   2.3 57 .5361-.5680 13.617-14.427 .59 15
29705512   14 .5512 5-17/32 140 3-1/8 79   16 2.3 57 .5361-.5680 13.617-14.427 .59 15
29705625 9/16 14.288 .5625 5-17/32 140 3-1/8 79 5/8   2.3 57 .5361-.5680 13.617-14.427 .59 15
29705709   14.5 .5709 5-11/16 144 3-9/32 83   20 2.4 60 .5681-.5990 14.43-15.215 .62 16
29705781 37/64 14.684 .5781 5-11/16 144 3-9/32 83 3/4   2.4 60 .5681-.5990 14.43-15.215 .62 16
29705906   15 .5906 5-11/16 144 3-9/32 83   20 2.4 60 .5681-.5990 14.43-15.215 .62 16
29705938 19/32 15.083 .5938 5-11/16 144 3-9/32 83 3/4   2.4 60 .5681-.5990 14.43-15.215 .62 16
29706094 39/64 15.479 .6094 5-27/32 148 3-7/16 87 3/4   2.5 64 .5991-.6310 15.217-16.027 .66 17
29706102   15.5 .6102 5-27/32 148 3-7/16 87   20 2.5 64 .5991-.6310 15.217-16.027 .66 17
29706250 5/8 15.875 .6250 5-27/32 148 3-7/16 87 3/4   2.5 64 .5991-.6310 15.217-16.027 .66 17
29706299   16 .6299 5-27/32 148 3-7/16 87   20 2.5 64 .5991-.6310 15.217-16.027 .66 17
29706406 41/64 16.271 .6406 6-1/6 154 3-21/32 93 3/4   2.6 67 .6311-.6710 16.03-17.043 .67 17
29706496   16.5 .6496 6-1/6 154 3-21/32 93   20 2.6 67 .6311-.6710 16.03-17.043 .67 17
29706562 21/32 16.667 .6562 6-1/6 154 3-21/32 93 3/4   2.6 67 .6311-.6710 16.03-17.043 .67 17
29706693   17 .6693 6-1/6 154 3-21/32 93   20 2.6 67 .6311-.6710 16.03-17.043 .67 17
29706719 43/64 17.066 .6719 6-7/32 158 3-13/16 97 3/4   2.8 70 .6711-.6930 17.046-17.602 .69 17
29706875 11/16 17.463 .6875 6-7/32 158 3-13/16 97 3/4   2.8 70 .6711-.6930 17.046-17.602 .69 17
29706890   17.5 .6890 6-7/32 158 3-13/16 97   20 2.8 70 .6711-.6930 17.046-17.602 .69 17
29707031 45/64 17.859 .7031 6-11/32 161 3-15/16 100 3/4   2.9 73 .6931-.7300 17.605-18.542 .70 18
29707087   18 .7087 6-11/32 161 3-15/16 100   20 2.9 73 .6931-.7300 17.605-18.542 .70 18
29707188 23/32 18.258 .7188 6-11/32 161 3-15/16 100 3/4   2.9 73 .6931-.7300 17.605-18.542 .70 18
29707283   18.5 .7283 6-11/32 161 3-15/16 100   20 2.9 73 .6931-.7300 17.605-18.542 .70 18
29707344 47/64 18.654 .7344 6-17/32 166 4-1/8 105 1   3 76 .7301-.7560 18.545-19.202 .72 18
29707480   19 .7480 6-17/32 166 4-1/8 105   25 3 76 .7301-.7560 18.545-19.202 .72 18
29707500 3/4 19.05 .7500 6-17/32 166 4-1/8 105 1   3 76 .7301-.7560 18.545-19.202 .72 18
29707590   19.279 .7590 6-25/32 172 4-9/32 109   25 3.1 79 .7561-.7890 19.205-20.041 .75 19
29707656 49/64 19.446 .7656 6-25/32 172 4-9/32 109 1   3.1 79 .7561-.7890 19.205-20.041 .75 19
29707677   19.5 .7677 6-25/32 172 4-9/32 109   25 3.1 79 .7561-.7890 19.205-20.041 .75 19
29707812 25/32 19.842 .7812 6-25/32 172 4-9/32 109 1   3.1 79 .7561-.7890 19.205-20.041 .75 19
29707874   20 .7874 6-25/32 172 4-9/32 109   25 3.1 79 .7561-.7890 19.205-20.041 .75 19
29707969 51/64 20.241 .7969 6-15/16 176 4-7/16 113 1   3.3 83 .7891-.8180 20.043-20.777 .78 20
29708071   20.5 .8071 6-15/16 176 4-7/16 113   25 3.3 83 .7891-.8180 20.043-20.777 .78 20
29708125 13/16 20.638 .8125 6-15/16 176 4-7/16 113 1   3.3 83 .7891-.8180 20.043-20.777 .78 20
29708268   21 .8268 7-3/32 180 4-19/32 117   25 3.4 86 .8181-.8590 20.78-21.819 .84 21
29708281 53/64 21.034 .8281 7-3/32 180 4-19/32 117 1   3.4 86 .8181-.8590 20.78-21.819 .84 21
29708438 27/32 21.433 .8438 7-3/32 180 4-19/32 117 1   3.4 86 .8181-.8590 20.78-21.819 .84 21
29708465   21.5 .8465 7-3/32 180 4-19/32 117   25 3.4 86 .8181-.8590 20.78-21.819 .84 21
29708594 55/64 21.829 .8594 7-3/16 183 4-11/16 119 1   3.5 89 .8591-.8810 21.821-22.377 .89 23
29708661   22 .8661 7-3/16 183 4-11/16 119   25 3.5 89 .8591-.8810 21.821-22.377 .89 23
29708750 7/8 22.225 .8750 7-3/16 183 4-11/16 119 1   3.5 89 .8591-.8810 21.821-22.377 .89 23
29708858   22.5 .8858 7-3/8 187 4-7/8 124   25 3.6 92 .8811-.9190 22.38-23.343 .87 22
29708906 57/64 22.621 .8906 7-3/8 187 4-7/8 124 1   3.6 92 .8811-.9190 22.38-23.343 .87 22
29709055   23 .9055 7-3/8 187 4-7/8 124   25 3.6 92 .8811-.9190 22.38-23.343 .87 22
29709062 29/32 23.017 .9062 7-3/8 187 4-7/8 124 1   3.6 92 .8811-.9190 22.38-23.343 .87 22
29709219 59/64 23.416 .9219 7-17/32 191 5-1/32 128 1   3.8 95 .9191-.9420 23.345-23.927 .84 21
29709252   23.5 .9252 7-17/32 191 5-1/32 128   25 3.8 95 .9191-.9420 23.345-23.927 .84 21
29709375 15/16 23.813 .9375 7-17/32 191 5-1/32 128 1   3.8 95 .9191-.9420 23.345-23.927 .84 21
29709449   24 .9449 7-11/16 195 5-3/16 132   25 3.9 98 .9421-.9830 23.929-24.968 .88 22
29709531 61/64 24.209 .9531 7-11/16 195 5-3/16 132 1   3.9 98 .9421-.9830 23.929-24.968 .88 22
29709646   24.5 .9646 7-11/16 195 5-3/16 132   25 3.9 98 .9421-.9830 23.929-24.968 .88 22
29709688 31/32 24.608 .9688 7-11/16 195 5-3/16 132 1   3.9 98 .9421-.9830 23.929-24.968 .88 22
29709843   25 .9843 7-13/16 198 5-5/16 135   25 4 102 .9831-1.0060 24.971-25.552 .91 23
29709844 63/64 25.004 .9844 7-13/16 198 5-5/16 135 1   4 102 .9831-1.0060 24.971-25.552 .91 23
29710000 1 25.4 1.0000 7-13/16 198 5-5/16 135 1   4 102 .9831-1.0060 24.971-25.552 .91 23
29710110   25.679 1.0110 8-3/16 208 5-11/16 144 1   4.3 108 1.0061-1.1320 25.555-28.753 .89 22
29710236   26 1.0236 8-3/16 208 5-11/16 144   25 4.3 108 1.0061-1.1320 25.555-28.753 .89 22
29710312 1-1/32 26.192 1.0312 8-3/16 208 5-11/16 144 1   4.3 108 1.0061-1.1320 25.555-28.753 .89 22
29710625 1-1/16 26.988 1.0625 8-3/16 208 5-11/16 144 1   4.3 108 1.0061-1.1320 25.555-28.753 .89 22
29710938 1-3/32 27.783 1.0938 8-3/16 208 5-11/16 144 1   4.3 108 1.0061-1.1320 25.555-28.753 .89 22
29711250 1-1/8 28.575 1.1250 8-3/16 208 5-11/16 144 1   4.3 108 1.0061-1.1320 25.555-28.753 .89 22

 

 
INDEX

Last Updated on 03/21/02
By Bob Novak Media Development
Copyright Ó1999 CJT KOOLCARB Inc.