COUNTERBORES — CARBIDE TIPPED

THREE/FOUR FLUTES — STRAIGHT SHANK

TYPE 2514 — THREE/FOUR FLUTES — STRAIGHT SHANK

For machining cast iron, non ferrous materials, composites, plastics and non-metals.
Right spiral polished flutes.
Carbide tips brazed to hardened alloy steel bodies.
Cutting diameter tolerance — plus .001", minus .000".
Shank diameter tolerance — plus .0000", minus .0005".

OPTIONS

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


Below are the critical dimensions of our Three/four Flutes - Straight Shank Counterbores. Please choose the Counterbores that meets your tooling needs.
Tool
Diameter		 Dimensions Type 2514
EDP NO.		 Price Finished To Modified Tool Diameter
Diameter No. of Flutes Overall Length Modified Diameter Range Price Each - Based on Quantity Ordered
Frac. Dec. Min. Cut Pilot Hole Shank Low High 1 2 3 4 5-7 8-14*
   1/4   .2500  .1140  .0938   15/64 3 3 13/16 251408 $77.25  .2381  .2530 $120.90 $99.10 $91.85 $88.20 $84.50 $81.50
   9/32  .2813  .1140  .0938   17/64 3 3 13/16 251409 94.45  .2531  .2840 137.95 116.30 109.00 105.40 101.75 98.70
   5/16  .3125  .1140  .0938   19/64 3 3 13/16 251410 80.60  .2841  .3150 121.50 101.10 94.30 90.90 87.45 84.60
  11/32  .3438  .1140  .0938    5/16 3 3 13/16 251411 102.05  .3151  .3470 142.90 122.40 115.60 112.25 108.80 105.90
   3/8   .3750  .1820  .1563    5/16 3 4  1/16 251412 85.45  .3471  .3780 123.25 104.35 98.05 94.95 91.75 89.20
  13/32  .4063  .1820  .1563    3/8  3 4  1/16 251413 96.35  .3781  .4090 134.10 115.30 108.95 105.85 102.65 100.10
   7/16  .4375  .1820  .1563    3/8  3 4  1/16 251414 87.70  .4091  .4410 125.45 106.55 100.25 97.25 93.95 91.40
  15/32  .4688  .2280  .1875    7/16 3 4  5/16 251415 107.05  .4411  .4720 144.80 125.90 119.70 116.60 113.30 110.75
   1/2   .5000  .2280  .1875    7/16 3 4  5/16 251416 97.35  .4721  .5030 135.05 116.10 109.95 106.75 103.60 101.05
  17/32  .5313  .2280  .1875    1/2  3 4  5/16 251417 110.15  .5031  .5340 147.90 129.10 122.80 119.70 116.45 113.85
   9/16  .5625  .2280  .1875    1/2  3 4  5/16 251418 100.20  .5341  .5660 137.95 119.05 112.80 109.60 106.50 103.80
  19/32  .5938  .2280  .1875    1/2  3 5  1/8  251419 111.35  .5661  .5970 149.05 130.20 123.95 120.80 117.55 115.00
   5/8   .6250  .2280  .1875    1/2  3 5  1/8  251420 101.20  .5971  .6280 138.90 119.95 113.70 110.65 107.40 104.85
  21/32  .6563  .2280  .1875    1/2  3 5  1/8  251421 117.80  .6281  .6590 155.50 136.70 130.35 127.25 124.10 121.50
  11/16  .6875  .2280  .1875    1/2  3 5  1/8  251422 107.15  .6591  .6910 144.90 126.00 119.75 116.65 113.50 110.80
  23/32  .7188  .2900  .2500    1/2  3 5  3/8  251423 120.60  .6911  .7220 158.25 139.45 133.15 130.15 126.85 124.30
   3/4   .7500  .2900  .2500    1/2  3 5  3/8  251424 109.55  .7221  .7530 147.35 128.45 122.15 119.05 115.90 113.20
  25/32  .7813  .2900  .2500    5/8  3 5  3/8  251425 123.20  .7531  .7840 160.85 141.95 135.75 132.60 129.35 126.80
  13/16  .8125  .2900  .2500    5/8  3 5  3/8  251426 111.85  .7841  .8160 149.60 130.70 124.45 121.25 118.20 115.60
  27/32  .8438  .2900  .2500    3/4  3 5  3/8  251427 130.40  .8161  .8470 168.20 149.25 143.05 139.90 136.75 134.10
   7/8   .8750  .2900  .2500    3/4  3 5  3/8  251428 118.60  .8471  .8780 156.35 137.50 131.25 128.05 124.90 122.25
  29/32  .9063  .2900  .2500    3/4  3 6  1/8  251429 133.05  .8781  .9090 170.85 151.95 145.65 142.60 139.40 136.80
  15/16  .9375  .2900  .2500    3/4  3 6  1/8  251430 121.05  .9091  .9410 158.85 139.90 133.65 130.50 127.30 124.70
  31/32  .9688  .3530  .3125    3/4  3 6  3/8  251431 136.95  .9411  .9720 174.65 155.75 149.50 146.40 143.25 140.65
1         1.0000  .3530  .3125    3/4  3 6  3/8  251432 124.50  .9721 1.0030 162.30 143.35 137.05 133.95 130.80 128.15
1  1/16 1.0625  .3530  .3125    3/4  3 6  3/8  251434 125.80 1.0031 1.0660 163.60 144.65 138.35 135.35 132.10 129.50
1  1/8  1.1250  .3530  .3125 1         3 6  3/8  251436 129.10 1.0661 1.1280 166.75 147.90 141.70 138.45 135.35 132.75
1  3/16 1.1875  .3530  .3125 1         3 6  3/8  251438 134.75 1.1281 1.1905 172.45 153.70 147.40 144.25 141.05 138.45
1  1/4  1.2500  .4260  .3750 1         4 6  5/8  251440 150.10 1.1906 1.2530 190.95 170.60 163.75 160.40 156.85 154.20
1  5/16 1.3125  .4260  .3750 1         4 6  5/8  251442 162.00 1.2531 1.3155 203.00 182.55 175.65 172.30 168.85 166.05
1  3/8  1.3750  .4260  .3750 1         4 6  5/8  251444 170.50 1.3156 1.3780 211.35 190.85 184.00 180.60 177.25 174.40
1  7/16 1.4375  .4260  .3750 1  1/4  4 7  7/8  251446 186.85 1.3781 1.4405 231.25 209.05 201.60 197.90 194.25 191.15
1  1/2  1.5000  .4260  .3750 1  1/4  4 7  7/8  251448 216.00 1.4406 1.5030 262.15 239.00 231.35 227.65 223.70 220.50
1  9/16 1.5625  .4890  .4375 1  1/4  4 8  1/8  251450 222.35 1.5031 1.5660 268.55 245.40 237.70 233.90 230.05 226.90
1  5/8  1.6250  .4890  .4375 1  1/4  4 8  1/8  251452 227.00 1.5661 1.6280 273.20 250.10 242.50 238.65 234.75 231.60
1 11/16 1.6875  .4890  .4375 1  1/4  4 8  1/8  251454 271.65 1.6281 1.6910 321.40 296.55 288.20 284.05 279.90 276.45
1  3/4  1.7500  .4890  .4375 1  1/4  4 8  1/8  251456 271.65 1.6911 1.7530 321.40 296.55 288.20 284.05 279.90 276.45
1 13/16 1.8125  .4890  .4375 1  1/2  4 8  1/8  251458 321.55 1.7531 1.8160 371.35 346.50 338.20 334.10 329.75 326.45
1  7/8  1.8750  .4890  .4375 1  1/2  4 8  1/8  251460 321.55 1.8161 1.8780 371.35 346.50 338.20 334.10 329.75 326.45
1 15/16 1.9375  .4890  .4375 1  1/2  4 8  1/8  251462 351.40 1.8781 1.9410 401.30 376.40 368.05 363.85 359.70 356.30
2         2.0000  .5510  .5000 1  1/2  4 8  3/8  251464 351.40 1.9411 2.0030 401.30 376.40 368.05 363.85 359.70 356.30
* Quantities of 15 or more - price of fractional size in same size range
Don't see the Three/four Flutes - Straight Shank Counterbores you need?
If the above dimensions do not meet your specific Three/four Flutes - Straight Shank Counterbores needs we may be able to make modifications to one of the above Three/four Flutes - Straight 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 Three/four Flutes - Straight Shank Counterbores you requested.
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