COUNTERBORES — CARBIDE TIPPED

THREE/FOUR FLUTES — TAPER SHANK

TYPE 2516 — THREE/FOUR FLUTES — TAPER SHANK

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

OPTIONS

Intermediate decimal or metric diameters.
Chamfers or radius end.
Cutting diameter ground down for small step.


Below are the critical dimensions of our Three/four Flutes - Taper Shank Counterbores. Please choose the Counterbores that meets your tooling needs.
Tool
Diameter		 Dimensions Type 2516
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*
   1/4   .2500  .1140  .0938 1 3 3 13/16 251608 $93.75  .2381  .2530 $139.00 $116.40 $108.85 $105.10 $101.30 $98.20
   9/32  .2813  .1140  .0938 1 3 3 13/16 251609 112.85  .2531  .2840 157.95 135.30 127.80 124.10 120.40 117.15
   5/16  .3125  .1140  .0938 1 3 3 13/16 251610 96.35  .2841  .3150 138.80 117.55 110.55 107.05 103.40 100.50
  11/32  .3438  .1140  .0938 1 3 3 13/16 251611 118.75  .3151  .3470 161.20 139.90 132.80 129.35 125.75 122.85
   3/8   .3750  .1820  .1563 1 3 4  1/16 251612 99.50  .3471  .3780 138.50 119.05 112.45 109.30 106.00 103.35
  13/32  .4063  .1820  .1563 1 3 4  1/16 251613 112.35  .3781  .4090 151.50 131.90 125.45 122.15 118.90 116.20
   7/16  .4375  .1820  .1563 1 3 4  1/16 251614 102.15  .4091  .4410 141.20 121.70 115.15 112.00 108.70 106.00
  15/32  .4688  .2280  .1875 1 3 4  5/16 251615 124.05  .4411  .4720 163.15 143.55 137.05 133.85 130.60 127.90
   1/2   .5000  .2280  .1875 1 3 4  5/16 251616 112.80  .4721  .5030 152.00 132.35 125.75 122.70 119.25 116.60
  17/32  .5313  .2280  .1875 1 3 4  5/16 251617 126.30  .5031  .5340 165.40 145.85 139.30 136.10 132.80 130.15
   9/16  .5625  .2280  .1875 1 3 4  5/16 251618 114.85  .5341  .5660 154.00 134.40 127.95 124.65 121.45 118.75
  19/32  .5938  .2280  .1875 2 3 5  1/8  251619 129.75  .5661  .5970 168.95 149.35 142.85 139.60 136.35 133.60
   5/8   .6250  .2280  .1875 2 3 5  1/8  251620 117.95  .5971  .6280 157.00 137.55 130.95 127.85 124.40 121.75
  21/32  .6563  .2280  .1875 2 3 5  1/8  251621 137.00  .6281  .6590 176.15 156.60 150.00 146.90 143.50 140.85
  11/16  .6875  .2280  .1875 2 3 5  1/8  251622 124.40  .6591  .6910 163.65 144.00 137.55 134.25 130.95 128.30
  23/32  .7188  .2900  .2500 2 3 5  3/8  251623 139.25  .6911  .7220 178.40 158.85 152.30 149.15 145.80 143.15
   3/4   .7500  .2900  .2500 2 3 5  3/8  251624 126.60  .7221  .7530 165.65 146.15 139.60 136.45 133.05 130.30
  25/32  .7813  .2900  .2500 2 3 5  3/8  251625 141.65  .7531  .7840 180.70 161.20 154.60 151.40 148.10 145.45
  13/16  .8125  .2900  .2500 2 3 5  3/8  251626 128.75  .7841  .8160 167.85 148.35 141.85 138.50 135.30 132.60
  27/32  .8438  .2900  .2500 2 3 5  3/8  251627 148.85  .8161  .8470 188.05 168.50 162.00 158.80 155.50 152.80
   7/8   .8750  .2900  .2500 2 3 5  3/8  251628 135.35  .8471  .8780 174.50 154.90 148.45 145.15 141.90 139.15
  29/32  .9063  .2900  .2500 3 3 6  1/8  251629 152.95  .8781  .9090 192.05 172.45 166.05 162.70 159.50 156.80
  15/16  .9375  .2900  .2500 3 3 6  1/8  251630 139.05  .9091  .9410 178.15 158.60 152.10 148.80 145.65 142.90
  31/32  .9688  .3530  .3125 3 3 6  3/8  251631 156.55  .9411  .9720 195.60 176.10 169.55 166.35 162.95 160.25
1         1.0000  .3530  .3125 3 3 6  3/8  251632 147.65  .9721 1.0030 188.30 167.95 161.20 157.90 154.35 151.60
1  1/16 1.0625  .3530  .3125 3 3 6  3/8  251634 149.60 1.0031 1.0660 190.10 169.85 163.10 159.75 156.25 153.50
1  1/8  1.1250  .3530  .3125 3 3 6  3/8  251636 154.30 1.0661 1.1280 194.95 174.70 167.80 164.50 161.05 158.30
1  3/16 1.1875  .3530  .3125 3 3 6  3/8  251638 159.55 1.1281 1.1905 200.30 179.90 173.05 169.80 166.35 163.55
1  1/4  1.2500  .4260  .3750 3 4 6  5/8  251640 177.40 1.1906 1.2530 221.40 199.40 192.05 188.45 184.75 181.65
1  5/16 1.3125  .4260  .3750 3 4 6  5/8  251642 190.10 1.2531 1.3155 234.30 212.10 204.85 201.15 197.55 194.45
1  3/8  1.3750  .4260  .3750 3 4 6  5/8  251644 199.25 1.3156 1.3780 243.25 221.25 213.90 210.25 206.65 203.50
1  7/16 1.4375  .4260  .3750 4 4 7  7/8  251646 221.65 1.3781 1.4405 269.55 245.60 237.50 233.60 229.60 226.30
1  1/2  1.5000  .4260  .3750 4 4 7  7/8  251648 245.70 1.4406 1.5030 293.60 269.70 261.70 257.75 253.75 250.45
1  9/16 1.5625  .4890  .4375 4 4 8  1/8  251650 264.00 1.5031 1.5660 314.15 289.15 280.85 276.60 272.45 269.05
1  5/8  1.6250  .4890  .4375 4 4 8  1/8  251652 268.75 1.5661 1.6280 318.85 293.90 285.50 281.35 277.10 273.75
1 11/16 1.6875  .4890  .4375 4 4 8  1/8  251654 321.55 1.6281 1.6910 375.75 348.70 339.70 335.25 330.60 326.90
1  3/4  1.7500  .4890  .4375 4 4 8  1/8  251656 321.55 1.6911 1.7530 375.75 348.70 339.70 335.25 330.60 326.90
1 13/16 1.8125  .4890  .4375 4 4 8  1/8  251658 380.60 1.7531 1.8160 434.70 407.70 398.65 394.15 389.60 385.80
1  7/8  1.8750  .4890  .4375 4 4 8  1/8  251660 380.60 1.8161 1.8780 434.70 407.70 398.65 394.15 389.60 385.80
1 15/16 1.9375  .4890  .4375 4 4 8  1/8  251662 415.85 1.8781 1.9410 470.05 442.95 433.85 429.45 424.90 421.15
2         2.0000  .5510  .5000 4 4 8  3/8  251664 415.85 1.9411 2.0030 470.05 442.95 433.85 429.45 424.90 421.15
* Quantities of 15 or more - price of fractional size in same size range
Don't see the Three/four Flutes - Taper Shank Counterbores you need?
If the above dimensions do not meet your specific Three/four Flutes - Taper Shank Counterbores needs we may be able to make modifications to one of the above Three/four Flutes - 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 Three/four Flutes - Taper Shank Counterbores you requested.
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