COUNTERBORES — CARBIDE TIPPED

STEEL CUTTING — TAPER SHANK

TYPE 2511 — STEEL CUTTING — TAPER SHANK

Carbide tips brazed to hardened alloy steel bodies.
Right hand spiral polished flutes.
Cutting diameter tolerance — plus .001" minus .000".
Shank diameter tolerance — plus .0000" minus .0005".

USE:

The special steel cutting grade of carbide permits the heavy chip loads and speeds required for machining steel — appropriate primary and secondary relief angles.

OPTIONS

Intermediate decimal or metric diameters.
Short shank or undersize diameter or flat shank.
Chamfers or radius end.
Cutting diameter ground down for small step.
Tanged shanks.


Below are the critical dimensions of our Steel Cutting - Taper Shank Counterbores. Please choose the Counterbores that meets your tooling needs.
Tool
Diameter
Dimensions Type 2511
EDP NO.
Price Finished To Modified Tool Diameter
Diameter Taper No. of Flutes Overall Length Modified Diameter Range Price Each - Based on Quantity Ordered
Frac. Dec. Min. Cut Pilot Hole Low High 1 2 3 4 5-7 8-14*
   1/  .2500  .1140  .0938 1 3 13/16 251108 $67.70  .2381  .2530 $100.35 $84.05 $78.60 $75.90 $73.15 $70.90
   9/32  .2813  .1140  .0938 1 3 13/16 251109 81.45  .2531  .2840 114.05 97.70 92.25 89.60 86.90 84.60
   5/16  .3125  .1140  .0938 1 3 13/16 251110 74.10  .2841  .3150 106.70 90.35 84.95 82.25 79.50 77.25
  11/32  .3438  .1140  .0938 1 3 13/16 251111 91.25  .3151  .3470 123.90 107.55 102.10 99.45 96.70 94.45
   3/  .3750  .1820  .1563 1 3  1/16 251112 76.45  .3471  .3780 106.50 91.50 86.45 84.00 81.50 79.45
  13/32  .4063  .1820  .1563 1 3  1/16 251113 86.35  .3781  .4090 116.45 101.40 96.40 93.90 91.40 89.30
   7/16  .4375  .1820  .1563 1 3  1/16 251114 78.55  .4091  .4410 108.55 93.55 88.50 86.10 83.55 81.50
  15/32  .4688  .2280  .1875 1 3  5/16 251115 95.35  .4411  .4720 125.40 110.35 105.35 102.90 100.35 98.30
   1/  .5000  .2280  .1875 1 3  5/16 251116 86.70  .4721  .5030 116.80 101.75 96.70 94.30 91.70 89.65
  17/32  .5313  .2280  .1875 1 3  5/16 251117 97.10  .5031  .5340 127.15 112.15 107.10 104.65 102.10 100.05
   9/16  .5625  .2280  .1875 1 3  5/16 251118 88.30  .5341  .5660 118.40 103.30 98.35 95.80 93.35 91.25
  19/32  .5938  .2280  .1875 2 3  1/ 251119 99.75  .5661  .5970 129.85 114.80 109.80 107.30 104.80 102.70
   5/  .6250  .2280  .1875 2 3  1/ 251120 90.65  .5971  .6280 120.75 105.75 100.70 98.25 95.65 93.60
  21/32  .6563  .2280  .1875 2 3  1/ 251121 105.30  .6281  .6590 135.40 120.35 115.30 112.90 110.30 108.25
  11/16  .6875  .2280  .1875 2 3  1/ 251122 95.65  .6591  .6910 125.80 110.70 105.75 103.20 100.70 98.60
  23/32  .7188  .2900  .2500 2 3  3/ 251123 107.05  .6911  .7220 137.15 122.10 117.10 114.65 112.10 110.05
   3/  .7500  .2900  .2500 2 3  3/ 251124 97.30  .7221  .7530 127.35 112.30 107.30 104.85 102.25 100.20
  25/32  .7813  .2900  .2500 2 3  3/ 251125 108.85  .7531  .7840 138.90 123.90 118.85 116.35 113.85 111.80
  13/16  .8125  .2900  .2500 2 3  3/ 251126 99.00  .7841  .8160 129.05 114.05 109.05 106.50 104.00 101.95
  27/32  .8438  .2900  .2500 2 3  3/ 251127 114.45  .8161  .8470 144.60 129.55 124.55 122.05 119.55 117.45
   7/  .8750  .2900  .2500 2 3  3/ 251128 104.05  .8471  .8780 134.15 119.05 114.10 111.60 109.10 107.00
  29/32  .9063  .2900  .2500 3 3  1/ 251129 117.60  .8781  .9090 147.65 132.60 127.65 125.10 122.60 120.55
  15/16  .9375  .2900  .2500 3 3  1/ 251130 106.90  .9091  .9410 136.95 121.90 116.90 114.40 111.95 109.85
  31/32  .9688  .3530  .3125 3 3  3/ 251131 120.30  .9411  .9720 150.35 135.35 130.35 127.85 125.25 123.20
        1.0000  .3530  .3125 3 3  3/ 251132 113.50  .9721 1.0030 144.75 129.15 123.90 121.35 118.65 116.55
 1/16 1.0625  .3530  .3125 3 3  3/ 251134 115.00 1.0031 1.0660 146.15 130.55 125.35 122.80 120.15 118.00
 1/ 1.1250  .3530  .3125 3 3  3/ 251136 118.60 1.0661 1.1280 149.85 134.30 129.00 126.45 123.80 121.70
 3/16 1.1875  .3530  .3125 3 3  3/ 251138 122.65 1.1281 1.1905 153.95 138.30 133.05 130.50 127.85 125.75
 1/ 1.2500  .4260  .3750 3 4  5/ 251140 136.35 1.1906 1.2530 170.20 153.25 147.65 144.85 142.00 139.65
 5/16 1.3125  .4260  .3750 3 4  5/ 251142 146.15 1.2531 1.3155 180.10 163.05 157.50 154.65 151.85 149.50
 3/ 1.3750  .4260  .3750 3 4  5/ 251144 153.15 1.3156 1.3780 187.00 170.10 164.45 161.65 158.80 156.45
 7/16 1.4375  .4260  .3750 4 4  7/ 251146 170.35 1.3781 1.4405 207.20 188.80 182.60 179.60 176.50 173.95
 1/ 1.5000  .4260  .3750 4 4  7/ 251148 188.90 1.4406 1.5030 225.75 207.30 201.20 198.15 195.10 192.50
 9/16 1.5625  .4890  .4375 4 4  1/ 251150 202.95 1.5031 1.5660 241.50 222.25 215.90 212.65 209.40 206.80
 5/ 1.6250  .4890  .4375 4 4  1/ 251152 206.60 1.5661 1.6280 245.15 225.90 219.50 216.25 213.00 210.45
11/16 1.6875  .4890  .4375 4 4  1/ 251154 247.20 1.6281 1.6910 288.85 268.05 261.15 257.70 254.15 251.30
 3/ 1.7500  .4890  .4375 4 4  1/ 251156 247.20 1.6911 1.7530 288.85 268.05 261.15 257.70 254.15 251.30
13/16 1.8125  .4890  .4375 4 4  1/ 251158 292.60 1.7531 1.8160 334.20 313.40 306.45 303.00 299.50 296.60
 7/ 1.8750  .4890  .4375 4 4  1/ 251160 292.60 1.8161 1.8780 334.20 313.40 306.45 303.00 299.50 296.60
15/16 1.9375  .4890  .4375 4 4  1/ 251162 319.65 1.8781 1.9410 361.30 340.50 333.50 330.15 326.65 323.75
        2.0000  .5510  .5000 4 4  3/ 251164 319.65 1.9411 2.0030 361.30 340.50 333.50 330.15 326.65 323.75
* Quantities of 15 or more - price of fractional size in same size range
Don't see the Steel Cutting - Taper Shank Counterbores you need?
If the above dimensions do not meet your specific Steel Cutting - Taper Shank Counterbores needs we may be able to make modifications to one of the above Steel Cutting - Taper Shank Counterbores or we can quote a full special to your exact requirements. Simply click here to view and print our special tool quote form. Fill it out and fax (800-867-9312) it back to Rock River Tool. We will let you know how we will provide the Steel Cutting - Taper Shank Counterbores you requested.
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