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 $70.55  .2381  .2530 $110.40 $90.50 $83.90 $80.55 $77.15 $74.45
   9/32  .2813  .1140  .0938   17/64 3 3 13/16 251409 86.25  .2531  .2840 126.00 106.20 99.55 96.25 92.90 90.15
   5/16  .3125  .1140  .0938   19/64 3 3 13/16 251410 73.60  .2841  .3150 110.95 92.35 86.10 83.00 79.85 77.25
  11/32  .3438  .1140  .0938    5/16 3 3 13/16 251411 93.20  .3151  .3470 130.50 111.80 105.55 102.50 99.35 96.70
   3/8   .3750  .1820  .1563    5/16 3 4  1/16 251412 78.05  .3471  .3780 112.55 95.30 89.55 86.70 83.80 81.45
  13/32  .4063  .1820  .1563    3/8  3 4  1/16 251413 88.00  .3781  .4090 122.45 105.30 99.50 96.65 93.75 91.40
   7/16  .4375  .1820  .1563    3/8  3 4  1/16 251414 80.10  .4091  .4410 114.55 97.30 91.55 88.80 85.80 83.45
  15/32  .4688  .2280  .1875    7/16 3 4  5/16 251415 97.75  .4411  .4720 132.25 115.00 109.30 106.50 103.45 101.15
   1/2   .5000  .2280  .1875    7/16 3 4  5/16 251416 88.90  .4721  .5030 123.35 106.05 100.40 97.50 94.60 92.30
  17/32  .5313  .2280  .1875    1/2  3 4  5/16 251417 100.60  .5031  .5340 135.05 117.90 112.15 109.30 106.35 103.95
   9/16  .5625  .2280  .1875    1/2  3 4  5/16 251418 91.50  .5341  .5660 126.00 108.70 103.00 100.10 97.25 94.80
  19/32  .5938  .2280  .1875    1/2  3 5  1/8  251419 101.70  .5661  .5970 136.10 118.90 113.20 110.30 107.35 105.00
   5/8   .6250  .2280  .1875    1/2  3 5  1/8  251420 92.40  .5971  .6280 126.85 109.55 103.85 101.05 98.10 95.75
  21/32  .6563  .2280  .1875    1/2  3 5  1/8  251421 107.60  .6281  .6590 142.00 124.85 119.05 116.20 113.35 110.95
  11/16  .6875  .2280  .1875    1/2  3 5  1/8  251422 97.85  .6591  .6910 132.35 115.05 109.35 106.55 103.65 101.20
  23/32  .7188  .2900  .2500    1/2  3 5  3/8  251423 110.15  .6911  .7220 144.50 127.35 121.60 118.85 115.85 113.50
   3/4   .7500  .2900  .2500    1/2  3 5  3/8  251424 100.05  .7221  .7530 134.55 117.30 111.55 108.70 105.85 103.40
  25/32  .7813  .2900  .2500    5/8  3 5  3/8  251425 112.50  .7531  .7840 146.90 129.65 123.95 121.10 118.15 115.80
  13/16  .8125  .2900  .2500    5/8  3 5  3/8  251426 102.15  .7841  .8160 136.60 119.35 113.65 110.75 107.95 105.55
  27/32  .8438  .2900  .2500    3/4  3 5  3/8  251427 119.10  .8161  .8470 153.60 136.30 130.65 127.75 124.90 122.45
   7/8   .8750  .2900  .2500    3/4  3 5  3/8  251428 108.30  .8471  .8780 142.80 125.55 119.85 116.95 114.05 111.65
  29/32  .9063  .2900  .2500    3/4  3 6  1/8  251429 121.50  .8781  .9090 156.05 138.75 133.00 130.25 127.30 124.95
  15/16  .9375  .2900  .2500    3/4  3 6  1/8  251430 110.55  .9091  .9410 145.05 127.75 122.05 119.20 116.25 113.90
  31/32  .9688  .3530  .3125    3/4  3 6  3/8  251431 125.05  .9411  .9720 159.50 142.25 136.55 133.70 130.80 128.45
1         1.0000  .3530  .3125    3/4  3 6  3/8  251432 113.70  .9721 1.0030 148.20 130.90 125.15 122.35 119.45 117.05
1  1/16 1.0625  .3530  .3125    3/4  3 6  3/8  251434 114.90 1.0031 1.0660 149.40 132.10 126.35 123.60 120.65 118.25
1  1/8  1.1250  .3530  .3125 1         3 6  3/8  251436 117.90 1.0661 1.1280 152.30 135.05 129.40 126.45 123.60 121.25
1  3/16 1.1875  .3530  .3125 1         3 6  3/8  251438 123.05 1.1281 1.1905 157.50 140.35 134.60 131.75 128.80 126.45
1  1/4  1.2500  .4260  .3750 1         4 6  5/8  251440 137.10 1.1906 1.2530 174.40 155.80 149.55 146.50 143.25 140.80
1  5/16 1.3125  .4260  .3750 1         4 6  5/8  251442 147.95 1.2531 1.3155 185.40 166.70 160.40 157.35 154.20 151.65
1  3/8  1.3750  .4260  .3750 1         4 6  5/8  251444 155.70 1.3156 1.3780 193.00 174.30 168.05 164.95 161.85 159.25
1  7/16 1.4375  .4260  .3750 1  1/4  4 7  7/8  251446 170.65 1.3781 1.4405 211.20 190.90 184.10 180.75 177.40 174.55
1  1/2  1.5000  .4260  .3750 1  1/4  4 7  7/8  251448 197.25 1.4406 1.5030 239.40 218.25 211.30 207.90 204.30 201.35
1  9/16 1.5625  .4890  .4375 1  1/4  4 8  1/8  251450 203.05 1.5031 1.5660 245.25 224.10 217.10 213.60 210.10 207.20
1  5/8  1.6250  .4890  .4375 1  1/4  4 8  1/8  251452 207.30 1.5661 1.6280 249.50 228.40 221.45 217.95 214.40 211.50
1 11/16 1.6875  .4890  .4375 1  1/4  4 8  1/8  251454 248.10 1.6281 1.6910 293.50 270.80 263.20 259.40 255.60 252.45
1  3/4  1.7500  .4890  .4375 1  1/4  4 8  1/8  251456 248.10 1.6911 1.7530 293.50 270.80 263.20 259.40 255.60 252.45
1 13/16 1.8125  .4890  .4375 1  1/2  4 8  1/8  251458 293.65 1.7531 1.8160 339.15 316.45 308.85 305.10 301.15 298.15
1  7/8  1.8750  .4890  .4375 1  1/2  4 8  1/8  251460 293.65 1.8161 1.8780 339.15 316.45 308.85 305.10 301.15 298.15
1 15/16 1.9375  .4890  .4375 1  1/2  4 8  1/8  251462 320.90 1.8781 1.9410 366.50 343.75 336.10 332.30 328.50 325.40
2         2.0000  .5510  .5000 1  1/2  4 8  3/8  251464 320.90 1.9411 2.0030 366.50 343.75 336.10 332.30 328.50 325.40
* 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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