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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
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  9. Counterbores
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Counterbores (929 items) - Page 24

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
No Product Image Available
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G021726566
Mfr # 902-000-129
product price:  $70.59
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 6 in

Zoro # G321726266
Mfr # 902-000-165
product price:  $162.99
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G621726720
Mfr # 902-000-099
product price:  $58.59
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 5 in

Zoro # G821725165
Mfr # 902-000-144
product price:  $99.79
/ea
Link No 8 Co 3Fl 0.195 Pilot X 0.304 Cbore 1/4" Shank X 4" Oal 50-CO-182
Link

No 8 Co 3Fl 0.195 Pilot X 0.304 Cbore 1/4" Shank X 4" Oal

Zoro # G7639959
Mfr # 50-CO-182
product price:  $64.95
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 7 in

Zoro # G121727029
Mfr # 902-000-177
product price:  $351.99
/ea
Super Tool Reduced Shank Counterbore, 5/8" D 52220
Super Tool

Reduced Shank Counterbore, 5/8" D

Zoro # G0331130
Mfr # 52220
product price:  $99.69
/ea
Melin Tool Co Countersink, Cobalt, 90 deg., 1/2 HSP3-1/2-90T
Melin Tool Co

Countersink, Cobalt, 90 deg., 1/2

Zoro # G4558710
Mfr # HSP3-1/2-90T
product price:  $36.75
/ea
Link 4MM HSS Se 4.36 X 7.54 Drill 7.54 Cbore 6.35 Shank 34.92 Oal 75-L2-521
Link

4MM HSS Se 4.36 X 7.54 Drill 7.54 Cbore 6.35 Shank 34.92 Oal

Zoro # G7643775
Mfr # 75-L2-521
product price:  $20.89
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G821726896
Mfr # 902-000-114
product price:  $64.99
/ea
Link 3/8" Co 3Fl 0.406 Pilot X 0.604 Cbore 3/8" Shank X 5" Oal 50-CO-186
Link

3/8" Co 3Fl 0.406 Pilot X 0.604 Cbore 3/8" Shank X 5" Oal

Zoro # G7641270
Mfr # 50-CO-186
product price:  $96.55
/ea
Link 3MM Co 3Fl 3.8 Pilot X 6.3 Cbore 6.35 Shank X 100 Oal 75-CO-520
Link

3MM Co 3Fl 3.8 Pilot X 6.3 Cbore 6.35 Shank X 100 Oal

Zoro # G7644956
Mfr # 75-CO-520
product price:  $62.49
/ea
Super Tool Counterbore, 9/16" D, Carbide Tipped 56406
Super Tool

Counterbore, 9/16" D, Carbide Tipped

Zoro # G0330351
Mfr # 56406
product price:  $102.99
/ea
Link 3/8" HSS Se .406 X .468 Drill .593 Cbore 5/8 Shank 2-11/32 Oal 50-L2-186
Link

3/8" HSS Se .406 X .468 Drill .593 Cbore 5/8 Shank 2-11/32 Oal

Zoro # G7645017
Mfr # 50-L2-186
product price:  $30.15
/ea
Link 7/16" HSS Se .468 X .500 Drill .687 Cbore 5/8 Shank 2-1/2 Oal 50-L2-187
Link

7/16" HSS Se .468 X .500 Drill .687 Cbore 5/8 Shank 2-1/2 Oal

Zoro # G7642689
Mfr # 50-L2-187
product price:  $35.65
/ea
Internal Tool A Nc-437-437 N/C Counterbore 85-4371
Internal Tool

A Nc-437-437 N/C Counterbore

Zoro # G900402451
Mfr # 85-4371
product price:  $124.99
/ea
Qualtech Counterbore, Morse Taper Shank, Series DEWCBR, 238 Bore, 978 Overall Length, 5 Shank Diamete DEWCBRTS2-3/8
Qualtech

Counterbore, Morse Taper Shank, Series DEWCBR, 238 Bore, 978 Overall Length, 5 Shank Diamete

Zoro # G708029089
Mfr # DEWCBRTS2-3/8
product price:  $404.99
/ea
Super Tool Counterbore, 9/16" D, Carbide Tipped 59806
Super Tool

Counterbore, 9/16" D, Carbide Tipped

Zoro # G0329913
Mfr # 59806
product price:  $111.99
/ea
No Product Image Available
Keo

Counterbore, Metric, 100 mm

Zoro # G221727196
Mfr # 902-000-246
product price:  $73.69
/ea
No Product Image Available
Keo

Counterbore, Metric, 100 mm

Zoro # G621725938
Mfr # 902-000-243
product price:  $78.89
/ea
No Product Image Available
Keo

Counterbore Set, 7, Fractional Inch

Zoro # G621726478
Mfr # 902-000-292
product price:  $595.99
/ea
Internal Tool A Nc-734-750 N/C Counterbore 85-7341
Internal Tool

A Nc-734-750 N/C Counterbore

Zoro # G700402552
Mfr # 85-7341
product price:  $470.99
/ea
Internal Tool A Nc-359-375 N/C Counterbore 85-3591
Internal Tool

A Nc-359-375 N/C Counterbore

Zoro # G500402424
Mfr # 85-3591
product price:  $99.25
/ea
Internal Tool A Nc-641-750 N/C Counterbore 85-6411
Internal Tool

A Nc-641-750 N/C Counterbore

Zoro # G400402531
Mfr # 85-6411
product price:  $426.99
/ea
Internal Tool A Nc-125-125 N/C Counterbore 85-1251
Internal Tool

A Nc-125-125 N/C Counterbore

Zoro # G700402361
Mfr # 85-1251
product price:  $35.29
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G621724955
Mfr # 902-000-321
product price:  $68.89
/ea
Link #3 HSS Se .110 X .220 Drill .175 Cbore 3/16 Shank 1-1/16 Oal 50-L2-178
Link

#3 HSS Se .110 X .220 Drill .175 Cbore 3/16 Shank 1-1/16 Oal

Zoro # G7641289
Mfr # 50-L2-178
product price:  $19.39
/ea
Kodiak Cutting Tools No. 1 Counterbores 1/32 Oversize Capscrew Style 5496106
Kodiak Cutting Tools

No. 1 Counterbores 1/32 Oversize Capscrew Style

Zoro # G8615357
Mfr # 5496106
product price:  $229.99
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 5 in

Zoro # G221725109
Mfr # 902-000-309
product price:  $116.99
/ea
Super Tool Counterbore, 21/32" D, Carbide Tipped 5776562
Super Tool

Counterbore, 21/32" D, Carbide Tipped

Zoro # G0330342
Mfr # 5776562
product price:  $122.99
/ea
Super Tool Counterbore, 1" D, Carbide Tipped 56413
Super Tool

Counterbore, 1" D, Carbide Tipped

Zoro # G0329870
Mfr # 56413
product price:  $127.99
/ea
No Product Image Available
Keo

Counterbore, Metric, 80 mm

Zoro # G421726678
Mfr # 902-000-240
product price:  $69.29
/ea
Qualtech Counterbore, Morse Taper Shank, Series DEWCBR, 3 Bore, 978 Overall Length, 5 Shank Diameter, 1 DEWCBRTS3INCH
Qualtech

Counterbore, Morse Taper Shank, Series DEWCBR, 3 Bore, 978 Overall Length, 5 Shank Diameter, 1

Zoro # G008028997
Mfr # DEWCBRTS3INCH
product price:  $611.99
/ea
Internal Tool A Nc-484-500 N/C Counterbore 85-4841
Internal Tool

A Nc-484-500 N/C Counterbore

Zoro # G200402397
Mfr # 85-4841
product price:  $166.99
/ea
Morse Cap Screw Counterbore, Straight Shank, Series 1766, 6 mm Screw, 04134 Bore Dia, 618 Overall Le 25749
Morse

Cap Screw Counterbore, Straight Shank, Series 1766, 6 mm Screw, 04134 Bore Dia, 618 Overall Le

Zoro # G808029064
Mfr # 25749
product price:  $82.25
/ea
Counterbores (929 items) - Page 24
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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

Port ToolsJobber Length Drill BitsHole SawsSquare End MillsHammer Drill Bits
CountersinksSpiral Flute 3-Flute TapsExtra Long Drill BitsReduced Shank Drill BitsHigh Speed Steel Chucking Reamers
counter bore6-piece damask jacquard/solidinterchangeable pilot counterborepilot counterbore5/8 counterbore
metric shcscounterbores - flat bottom1-1/4 in counterborecleveland counterborecounter bore set

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