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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

Counterbores (927 items) - Page 11

Harvey Tool 0.0937 in. 3/32 Cutter dia. x 3/8 in. Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated 731593-C3
Harvey Tool

0.0937 in. 3/32 Cutter dia. x 3/8 in. Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated

Zoro # G411325058
Mfr # 731593-C3
product price: 
$63.29
/ea
Harvey Tool Counterbores-Flat Bottom, 676716-C3, AlTiN, 1/4" Cutter Diameter, 1-5/16" Flute Length 676716-C3
Harvey Tool

Counterbores-Flat Bottom, 676716-C3, AlTiN, 1/4" Cutter Diameter, 1-5/16" Flute Length

Zoro # G522920609
Mfr # 676716-C3
product price: 
$80.35
/ea
Keo Counterbore, Decimal Inch, 4-1/2 in 902-000-321
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G621724955
Mfr # 902-000-321
product price: 
$74.89
/ea
Keo Counterbore Set, 7, Fractional Inch 902-000-292
Keo

Counterbore Set, 7, Fractional Inch

Zoro # G621726478
Mfr # 902-000-292
product price: 
$647.99
/ea
Internal Tool A Nc-547-562 N/C Counterbore 85-5471
Internal Tool

A Nc-547-562 N/C Counterbore

Zoro # G000402504
Mfr # 85-5471
product price: 
$232.99
/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
Kodiak Cutting Tools No. 3/4 Counterbores On Size Capscrew Style 5495776
Kodiak Cutting Tools

No. 3/4 Counterbores On Size Capscrew Style

Zoro # G8619855
Mfr # 5495776
product price: 
$190.99
/ea
Harvey Tool Counterbores - Flat Bottom 23432-C6
Harvey Tool

Counterbores - Flat Bottom

Zoro # G504195384
Mfr # 23432-C6
product price: 
$182.99
/ea
Garant Interchangeable Pilot Pin for Counterbore 156520 18-20, 11 mm 156620 5X11
Garant

Interchangeable Pilot Pin for Counterbore 156520 18-20, 11 mm

Zoro # G614389628
Mfr # 156620 5X11
product price: 
$33.15
/ea
Kodiak Cutting Tools 7/16 Counterbore 1/64 Oversize Capscrew Style 5495897
Kodiak Cutting Tools

7/16 Counterbore 1/64 Oversize Capscrew Style

Zoro # G8630109
Mfr # 5495897
product price: 
$84.55
/ea
Tungaloy Solid End Mill Head, VGC120L10.0R04-, PK2 6859334
Tungaloy

Solid End Mill Head, VGC120L10.0R04-, PK2

Zoro # G401779090
Mfr # 6859334
product price: 
$197.99
/pk 2, $99.00/ea
Keo Counterbore Set, 7, Fractional Inch 902-000-189
Keo

Counterbore Set, 7, Fractional Inch

Zoro # G321726334
Mfr # 902-000-189
product price: 
$573.99
/ea
Harvey Tool Counterbores - Flat Bottom 23411-C6
Harvey Tool

Counterbores - Flat Bottom

Zoro # G804195398
Mfr # 23411-C6
product price: 
$61.49
/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
Garant Counterbore with Interchangeable Pilot Pins, 20 mm 156520 20
Garant

Counterbore with Interchangeable Pilot Pins, 20 mm

Zoro # G014389853
Mfr # 156520 20
product price: 
$112.99
/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
Super Tool Counterbore, 21/32" D, Carbide Tipped 5776562
Super Tool

Counterbore, 21/32" D, Carbide Tipped

Zoro # G0330342
Mfr # 5776562
product price: 
$128.99
/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: 
$444.99
/ea
Tungaloy Solid End Mill Head, VGC080L08.0R04-, PK2 6859503
Tungaloy

Solid End Mill Head, VGC080L08.0R04-, PK2

Zoro # G101779024
Mfr # 6859503
product price: 
$139.99
/pk 2, $70.00/ea
Internal Tool A Nc-500-500 N/C Counterbore 85-5001
Internal Tool

A Nc-500-500 N/C Counterbore

Zoro # G900402536
Mfr # 85-5001
product price: 
$165.99
/ea
Link 4MM Co 3Fl 4.8 Pilot X 7.8 Cbore 6.35 Shank X 100 Oal 75-CO-521
Link

4MM Co 3Fl 4.8 Pilot X 7.8 Cbore 6.35 Shank X 100 Oal

Zoro # G7638839
Mfr # 75-CO-521
product price: 
$66.95
/ea
Internal Tool A Nc-187-187 N/C Counterbore 85-1871
Internal Tool

A Nc-187-187 N/C Counterbore

Zoro # G300402365
Mfr # 85-1871
product price: 
$50.39
/ea
Internal Tool A Nc-594-625 N/C Counterbore 85-5941
Internal Tool

A Nc-594-625 N/C Counterbore

Zoro # G900402505
Mfr # 85-5941
product price: 
$331.99
/ea
Kodiak Cutting Tools No. 4 Counterbores 1/64 Oversize Capscrew Style 5495809
Kodiak Cutting Tools

No. 4 Counterbores 1/64 Oversize Capscrew Style

Zoro # G8615585
Mfr # 5495809
product price: 
$46.19
/ea
Link Ua4 #10 English Shcs HSS Counterbore 60-L2-296
Link

Ua4 #10 English Shcs HSS Counterbore

Zoro # G7643784
Mfr # 60-L2-296
product price: 
$24.15
/ea
Super Tool Counterbore, 1-5/16" D, Carbide Tipped 56418
Super Tool

Counterbore, 1-5/16" D, Carbide Tipped

Zoro # G0329767
Mfr # 56418
product price: 
$166.99
/ea
Tungaloy Solid End Mill Head, VGC080L08.0R20-, PK2 6859504
Tungaloy

Solid End Mill Head, VGC080L08.0R20-, PK2

Zoro # G401779045
Mfr # 6859504
product price: 
$139.99
/pk 2, $70.00/ea
Internal Tool A Nc-250-250 N/C Counterbore 85-2501
Internal Tool

A Nc-250-250 N/C Counterbore

Zoro # G600402430
Mfr # 85-2501
product price: 
$57.99
/ea
Tungaloy Solid End Mill Head, VGC098L09.0R03-, PK2 6859366
Tungaloy

Solid End Mill Head, VGC098L09.0R03-, PK2

Zoro # G001779070
Mfr # 6859366
product price: 
$159.99
/pk 2, $80.00/ea
Link No 10 Co 3Fl 0.221 Pilot X 0.346 Cbore 5/16" Shank X 4" Oal 50-CO-183
Link

No 10 Co 3Fl 0.221 Pilot X 0.346 Cbore 5/16" Shank X 4" Oal

Zoro # G7637308
Mfr # 50-CO-183
product price: 
$75.75
/ea
Super Tool Counterbore, 9/16" D, Carbide Tipped 56406
Super Tool

Counterbore, 9/16" D, Carbide Tipped

Zoro # G0330351
Mfr # 56406
product price: 
$108.99
/ea
Garant Interchangeable Pilot Pin for Counterbore 156520 18-20, 8.5 mm 156620 5X8,5
Garant

Interchangeable Pilot Pin for Counterbore 156520 18-20, 8.5 mm

Zoro # G614389543
Mfr # 156620 5X8,5
product price: 
$33.15
/ea
Link 2.5MM Co 3Fl 3.0 Pilot X 5.4 Cbore 6.35 Shank X 100 Oal 75-CO-519
Link

2.5MM Co 3Fl 3.0 Pilot X 5.4 Cbore 6.35 Shank X 100 Oal

Zoro # G7639977
Mfr # 75-CO-519
product price: 
$80.15
/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-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 Counterbore, 13/16" D, Carbide Tipped 56410
Super Tool

Counterbore, 13/16" D, Carbide Tipped

Zoro # G0330141
Mfr # 56410
product price: 
$120.99
/ea
Counterbores (927 items) - Page 11
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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

Hole SawsJobber Length Drill BitsDrill Bit SetsHammer Drill BitsReduced Shank Drill Bits
Center DrillsCountersinksTap SetsAuger Drill BitsHex Dies
pilot counterbore6-piece damask jacquard/solidinterchangeable pilot counterbore5/8 counterborecounter bore pilot
1-1/4 in counterborehigh speed steelcounterbores - flat bottommetric shcscounter bore set

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