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  1. Home
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  3. Tools & Machining
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  5. Cutting Tools
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  7. Porting Tools & Counterbores
  8. /
  9. Counterbores

Counterbores (929 items) - Page 25

No Product Image Available
Keo

Counterbore, Decimal Inch, 5 in

Zoro # G221726717
Mfr # 902-000-311
product price:  $100.99
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 5 in

Zoro # G521725823
Mfr # 902-000-141
product price:  $85.89
/ea
Harvey Tool Counterbores-Flat Bottom, 676716, Uncoated, 1/4" Cutter Diameter, 1-5/16" Flute Length 676716
Harvey Tool

Counterbores-Flat Bottom, 676716, Uncoated, 1/4" Cutter Diameter, 1-5/16" Flute Length

Zoro # G722920553
Mfr # 676716
product price:  $68.65
/ea
Internal Tool A Nc-531-562 N/C Counterbore 85-5311
Internal Tool

A Nc-531-562 N/C Counterbore

Zoro # G400402524
Mfr # 85-5311
product price:  $217.99
/ea
Link 1/4" Co 3Fl 0.281 Pilot X 0.414 Cbore 5/16" Shank X 4" Oal 50-CO-184
Link

1/4" Co 3Fl 0.281 Pilot X 0.414 Cbore 5/16" Shank X 4" Oal

Zoro # G7637317
Mfr # 50-CO-184
product price:  $78.85
/ea
No Product Image Available
Keo

Counterbore, Metric, 100 mm

Zoro # G521726073
Mfr # 902-000-255
product price:  $90.89
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G721727269
Mfr # 902-000-117
product price:  $67.39
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 6 in

Zoro # G921726390
Mfr # 902-000-153
product price:  $115.99
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 5 in

Zoro # G321727607
Mfr # 902-000-310
product price:  $100.99
/ea
Internal Tool A Nc-203-250 N/C Counterbore 85-2031
Internal Tool

A Nc-203-250 N/C Counterbore

Zoro # G800402360
Mfr # 85-2031
product price:  $54.05
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G121725711
Mfr # 902-000-331
product price:  $55.29
/ea
Morse Cap Screw Counterbore, Straight Shank, Series 1766, 12 mm Screw, 06496 Bore Dia, 712 Overall L 25752
Morse

Cap Screw Counterbore, Straight Shank, Series 1766, 12 mm Screw, 06496 Bore Dia, 712 Overall L

Zoro # G908029070
Mfr # 25752
product price:  $125.99
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G321726648
Mfr # 902-000-327
product price:  $60.49
/ea
Internal Tool A Nc-421-437 N/C Counterbore 85-4211
Internal Tool

A Nc-421-437 N/C Counterbore

Zoro # G600402362
Mfr # 85-4211
product price:  $132.99
/ea
Super Tool Reduced Shank Counterbore, 1-15/16" D 52262
Super Tool

Reduced Shank Counterbore, 1-15/16" D

Zoro # G0331453
Mfr # 52262
product price:  $263.99
/ea
Link 14MM HSS Se 14.68 X 16.67 Drill 21.82 Cbore 15.87 Shank 66.67 Oal 75-L2-527
Link

14MM HSS Se 14.68 X 16.67 Drill 21.82 Cbore 15.87 Shank 66.67 Oal

Zoro # G7637335
Mfr # 75-L2-527
product price:  $46.99
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G221725055
Mfr # 902-000-102
product price:  $58.59
/ea
Super Tool Counterbore, 7/8" D, Carbide Tipped 59811
Super Tool

Counterbore, 7/8" D, Carbide Tipped

Zoro # G0329968
Mfr # 59811
product price:  $149.99
/ea
Qualtech Counterbore, Round Shank, Series DEWCBR, 278 Bore, 978 Overall Length, 134 Shank Diameter,  DEWCBR2-7/8
Qualtech

Counterbore, Round Shank, Series DEWCBR, 278 Bore, 978 Overall Length, 134 Shank Diameter,

Zoro # G108029122
Mfr # DEWCBR2-7/8
product price:  $512.99
/ea
Link Ua7-7/16 English Shcs HSS Counterbore 60-L2-300
Link

Ua7-7/16 English Shcs HSS Counterbore

Zoro # G7641316
Mfr # 60-L2-300
product price:  $44.25
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G321727119
Mfr # 902-000-111
product price:  $62.19
/ea
Super Tool Reduced Shank Counterbore, 5/8" D 52220
Super Tool

Reduced Shank Counterbore, 5/8" D

Zoro # G0331130
Mfr # 52220
product price:  $108.99
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G021726566
Mfr # 902-000-129
product price:  $70.59
/ea
Link 5/16" Co 3Fl 0.343 Pilot X 0.507 Cbore 3/8" Shank X 5" Oal 50-CO-185
Link

5/16" Co 3Fl 0.343 Pilot X 0.507 Cbore 3/8" Shank X 5" Oal

Zoro # G7638866
Mfr # 50-CO-185
product price:  $85.65
/ea
Super Tool Counterbore, 13/16" D, Carbide Tipped 56410
Super Tool

Counterbore, 13/16" D, Carbide Tipped

Zoro # G0330141
Mfr # 56410
product price:  $114.99
/ea
Kodiak Cutting Tools No. 6 Counterbores 1/64 Oversize Capscrew Style 5495831
Kodiak Cutting Tools

No. 6 Counterbores 1/64 Oversize Capscrew Style

Zoro # G8614824
Mfr # 5495831
product price:  $43.69
/ea
Internal Tool A Nc-515-562 N/C Counterbore 85-5151
Internal Tool

A Nc-515-562 N/C Counterbore

Zoro # G100402497
Mfr # 85-5151
product price:  $227.99
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 6 in

Zoro # G921726284
Mfr # 902-000-162
product price:  $162.99
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G721726408
Mfr # 902-000-324
product price:  $65.39
/ea
Super Tool Counterbore, 19/32" D, Carbide Tipped 5775938
Super Tool

Counterbore, 19/32" D, Carbide Tipped

Zoro # G0330360
Mfr # 5775938
product price:  $130.99
/ea
Link Ua3-3MM Metric Shcs HSS Counterbore 72-L2-510
Link

Ua3-3MM Metric Shcs HSS Counterbore

Zoro # G7636075
Mfr # 72-L2-510
product price:  $23.49
/ea
Link 5/16" HSS Se .340 X .375 Drill .490 Cbore 1/2 Shank 1-15/16 Oal 50-L2-185
Link

5/16" HSS Se .340 X .375 Drill .490 Cbore 1/2 Shank 1-15/16 Oal

Zoro # G7635996
Mfr # 50-L2-185
product price:  $23.45
/ea
Super Tool Reduced Shank Counterbore, 5/16" D 52210
Super Tool

Reduced Shank Counterbore, 5/16" D

Zoro # G0331313
Mfr # 52210
product price:  $67.89
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G121725889
Mfr # 902-000-105
product price:  $59.29
/ea
Super Tool Reduced Shank Counterbore, 31/32" D 52231
Super Tool

Reduced Shank Counterbore, 31/32" D

Zoro # G0331243
Mfr # 52231
product price:  $131.99
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 6 in

Zoro # G421726128
Mfr # 902-000-159
product price:  $115.99
/ea
Counterbores (929 items) - Page 25
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About Counterbores

Counterbores are specialized tools utilized in creating enlarged, flat-bottomed holes in various materials, primarily metal. They're essential when a fastener's head needs to be level with or beneath the surface of the worked material. Available in an array of sizes and shapes, these tools can accommodate diverse types of fasteners and feature different tip configurations like straight flute or spiral flute based on their intended use. Counterboring speeds differ according to the material being processed. These durable tools are typically crafted from high-speed steel (HSS) or cobalt steel for enhanced cutting performance, sometimes coated with titanium nitride (TiN) for superior wear resistance and lubricity when dealing with tougher materials such as stainless steel or aluminum. Industries ranging from automotive manufacturing and aerospace engineering to medical device production widely employ counterbores for precise hole creation necessary for mounting screws and other fasteners.

Related Categories

CountersinksReduced Shank Drill BitsHole SawsSquare End MillsJobber Length Drill Bits
Center DrillsSpiral Flute 3-Flute TapsCarbide End MillsAuger Drill BitsDrill Bit Sets
pilot counterborecleveland counterborecounterbores - flat bottom1-1/4 in counterbore5/8 counterbore
counter bore pilotinterchangeable pilot counterbore6-piece damask jacquard/solidhigh speed steelmetric shcs

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