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 $85.60  .2381  .2530 $126.95 $106.30 $99.40 $96.00 $92.50 $89.70
   9/32  .2813  .1140  .0938 1 3 13/16 251109 103.05  .2531  .2840 144.25 123.55 116.70 113.35 109.95 107.00
   5/16  .3125  .1140  .0938 1 3 13/16 251110 88.00  .2841  .3150 126.75 107.35 100.95 97.75 94.45 91.80
  11/32  .3438  .1140  .0938 1 3 13/16 251111 108.45  .3151  .3470 147.20 127.75 121.30 118.15 114.85 112.20
   3/  .3750  .1820  .1563 1 3  1/16 251112 90.85  .3471  .3780 126.50 108.70 102.70 99.80 96.80 94.40
  13/32  .4063  .1820  .1563 1 3  1/16 251113 102.60  .3781  .4090 138.35 120.45 114.55 111.55 108.60 106.10
   7/16  .4375  .1820  .1563 1 3  1/16 251114 93.30  .4091  .4410 128.95 111.15 105.15 102.30 99.25 96.80
  15/32  .4688  .2280  .1875 1 3  5/16 251115 113.30  .4411  .4720 149.00 131.10 125.15 122.25 119.25 116.80
   1/  .5000  .2280  .1875 1 3  5/16 251116 103.00  .4721  .5030 138.80 120.85 114.85 112.05 108.90 106.50
  17/32  .5313  .2280  .1875 1 3  5/16 251117 111.20  .5031  .5340 145.60 128.40 122.65 119.85 116.90 114.55
   9/16  .5625  .2280  .1875 1 3  5/16 251118 101.10  .5341  .5660 135.55 118.25 112.60 109.65 106.85 104.45
  19/32  .5938  .2280  .1875 2 3  1/ 251119 114.20  .5661  .5970 148.65 131.45 125.70 122.85 120.00 117.55
   5/  .6250  .2280  .1875 2 3  1/ 251120 103.80  .5971  .6280 138.25 121.05 115.30 112.50 109.50 107.15
  21/32  .6563  .2280  .1875 2 3  1/ 251121 120.55  .6281  .6590 155.00 137.75 132.00 129.20 126.25 123.95
  11/16  .6875  .2280  .1875 2 3  1/ 251122 109.50  .6591  .6910 144.00 126.75 121.05 118.15 115.30 112.85
  23/32  .7188  .2900  .2500 2 3  3/ 251123 122.55  .6911  .7220 157.05 139.80 134.10 131.25 128.35 126.00
   3/  .7500  .2900  .2500 2 3  3/ 251124 111.40  .7221  .7530 145.80 128.55 122.85 120.05 117.05 114.70
  25/32  .7813  .2900  .2500 2 3  3/ 251125 124.65  .7531  .7840 159.05 141.85 136.10 133.20 130.35 128.00
  13/16  .8125  .2900  .2500 2 3  3/ 251126 113.35  .7841  .8160 147.75 130.55 124.85 121.95 119.05 116.70
  27/32  .8438  .2900  .2500 2 3  3/ 251127 131.00  .8161  .8470 165.55 148.30 142.55 139.70 136.85 134.45
   7/  .8750  .2900  .2500 2 3  3/ 251128 119.10  .8471  .8780 153.60 136.30 130.65 127.75 124.90 122.45
  29/32  .9063  .2900  .2500 3 3  1/ 251129 134.60  .8781  .9090 169.00 151.80 146.10 143.20 140.35 138.00
  15/16  .9375  .2900  .2500 3 3  1/ 251130 122.35  .9091  .9410 156.75 139.55 133.80 130.95 128.15 125.75
  31/32  .9688  .3530  .3125 3 3  3/ 251131 137.70  .9411  .9720 172.10 154.95 149.20 146.35 143.35 141.05
        1.0000  .3530  .3125 3 3  3/ 251132 129.90  .9721 1.0030 165.75 147.85 141.85 138.95 135.80 133.45
 1/16 1.0625  .3530  .3125 3 3  3/ 251134 131.65 1.0031 1.0660 167.30 149.45 143.50 140.55 137.55 135.10
 1/ 1.1250  .3530  .3125 3 3  3/ 251136 135.75 1.0661 1.1280 171.55 153.75 147.70 144.75 141.75 139.30
 3/16 1.1875  .3530  .3125 3 3  3/ 251138 140.40 1.1281 1.1905 176.25 158.35 152.35 149.40 146.35 143.95
 1/ 1.2500  .4260  .3750 3 4  5/ 251140 156.10 1.1906 1.2530 194.85 175.45 169.00 165.85 162.55 159.90
 5/16 1.3125  .4260  .3750 3 4  5/ 251142 167.30 1.2531 1.3155 206.15 186.70 180.30 177.05 173.85 171.15
 3/ 1.3750  .4260  .3750 3 4  5/ 251144 175.35 1.3156 1.3780 214.05 194.70 188.25 185.05 181.80 179.10
 7/16 1.4375  .4260  .3750 4 4  7/ 251146 195.00 1.3781 1.4405 237.20 216.15 209.05 205.65 202.05 199.15
 1/ 1.5000  .4260  .3750 4 4  7/ 251148 224.40 1.4406 1.5030 268.15 246.30 239.00 235.40 231.75 228.70
 9/16 1.5625  .4890  .4375 4 4  1/ 251150 241.10 1.5031 1.5660 286.90 264.05 256.50 252.60 248.80 245.70
 5/ 1.6250  .4890  .4375 4 4  1/ 251152 245.45 1.5661 1.6280 291.20 268.40 260.75 256.95 253.05 250.00
11/16 1.6875  .4890  .4375 4 4  1/ 251154 293.65 1.6281 1.6910 343.15 318.45 310.25 306.15 301.90 298.55
 3/ 1.7500  .4890  .4375 4 4  1/ 251156 293.65 1.6911 1.7530 343.15 318.45 310.25 306.15 301.90 298.55
13/16 1.8125  .4890  .4375 4 4  1/ 251158 347.60 1.7531 1.8160 397.00 372.35 364.05 359.95 355.80 352.35
 7/ 1.8750  .4890  .4375 4 4  1/ 251160 347.60 1.8161 1.8780 397.00 372.35 364.05 359.95 355.80 352.35
15/16 1.9375  .4890  .4375 4 4  1/ 251162 379.75 1.8781 1.9410 429.25 404.50 396.20 392.20 388.05 384.60
        2.0000  .5510  .5000 4 4  3/ 251164 379.75 1.9411 2.0030 429.25 404.50 396.20 392.20 388.05 384.60
* 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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