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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 12

Internal Tool A Nc-343-375 N/C Counterbore 85-3431
Internal Tool

A Nc-343-375 N/C Counterbore

Zoro # G600402379
Mfr # 85-3431
product price: 
$108.99
/ea
Kodiak Cutting Tools 1/2 Counterbore 1/64 Oversize Capscrew Style 5495908
Kodiak Cutting Tools

1/2 Counterbore 1/64 Oversize Capscrew Style

Zoro # G8624274
Mfr # 5495908
product price: 
$108.99
/ea
Super Tool Reduced Shank Counterbore, 27/32" D 52227
Super Tool

Reduced Shank Counterbore, 27/32" D

Zoro # G0331480
Mfr # 52227
product price: 
$133.99
/ea
Garant Counterbore Set in a Case, 6 Pieces, Type: K 156420 K
Garant

Counterbore Set in a Case, 6 Pieces, Type: K

Zoro # G714389849
Mfr # 156420 K
product price: 
$212.99
/ea
Garant Interchangeable Pilot Pin for Counterbore 156520 18-20, 6.8 mm 156620 5X6,8
Garant

Interchangeable Pilot Pin for Counterbore 156520 18-20, 6.8 mm

Zoro # G814389701
Mfr # 156620 5X6,8
product price: 
$33.15
/ea
Super Tool Reduced Shank Counterbore, 21/32" D 52221
Super Tool

Reduced Shank Counterbore, 21/32" D

Zoro # G0331173
Mfr # 52221
product price: 
$117.99
/ea
Internal Tool A Nc-156-187 N/C Counterbore 85-1561
Internal Tool

A Nc-156-187 N/C Counterbore

Zoro # G500402448
Mfr # 85-1561
product price: 
$50.39
/ea
Keen Sleeve Height & Counterbore Gage KE278657
Keen

Sleeve Height & Counterbore Gage

Zoro # G909923957
Mfr # KE278657
product price: 
$337.99
/ea
Harvey Tool 0.0625 in. 1/16 Cutter dia x 0.25in. 1/4 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes 731562
Harvey Tool

0.0625 in. 1/16 Cutter dia x 0.25in. 1/4 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes

Zoro # G811325023
Mfr # 731562
product price: 
$54.79
/ea
Link 1/4" 3Xd HSS Se .280 X .840 Drill .406 Cbore 3/8 Shank 2-3/4 Oal 50-L2-384
Link

1/4" 3Xd HSS Se .280 X .840 Drill .406 Cbore 3/8 Shank 2-3/4 Oal

Zoro # G7636084
Mfr # 50-L2-384
product price: 
$40.25
/ea
Super Tool Counterbore, 1-9/16" D, Carbide Tipped 56422
Super Tool

Counterbore, 1-9/16" D, Carbide Tipped

Zoro # G0329618
Mfr # 56422
product price: 
$251.99
/ea
Harvey Tool 3/8 in. Cutter dia. x 1 in. 1 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes, TiB2 Coated 23424-C8
Harvey Tool

3/8 in. Cutter dia. x 1 in. 1 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes, TiB2 Coated

Zoro # G211324640
Mfr # 23424-C8
product price: 
$115.99
/ea
Super Tool Counterbore, 25/32" D, Carbide Tipped 5797812
Super Tool

Counterbore, 25/32" D, Carbide Tipped

Zoro # G0330263
Mfr # 5797812
product price: 
$125.99
/ea
Keo Counterbore, Decimal Inch, 4-1/2 in 902-000-114
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G821726896
Mfr # 902-000-114
product price: 
$70.69
/ea
Keo Counterbore Set, 7, Fractional Inch 902-000-294
Keo

Counterbore Set, 7, Fractional Inch

Zoro # G021724876
Mfr # 902-000-294
product price: 
$647.99
/ea
Super Tool Reduced Shank Counterbore, 1-7/8" D 52260
Super Tool

Reduced Shank Counterbore, 1-7/8" D

Zoro # G0331517
Mfr # 52260
product price: 
$232.99
/ea
Garant Interchangeable Pilot Pin for Counterbore 156520 18-20, 10.2 mm 156620 5X10,2
Garant

Interchangeable Pilot Pin for Counterbore 156520 18-20, 10.2 mm

Zoro # G714389665
Mfr # 156620 5X10,2
product price: 
$33.15
/ea
Garant Counterbore with Interchangeable Pilot Pins, 40 mm 156520 40
Garant

Counterbore with Interchangeable Pilot Pins, 40 mm

Zoro # G314389799
Mfr # 156520 40
product price: 
$260.99
/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: 
$103.99
/ea
Super Tool Counterbore, 13/32" D, Carbide Tipped 5794062
Super Tool

Counterbore, 13/32" D, Carbide Tipped

Zoro # G0330053
Mfr # 5794062
product price: 
$114.99
/ea
Keo Counterbore, Decimal Inch, 4-1/2 in 902-000-320
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G321725061
Mfr # 902-000-320
product price: 
$74.89
/ea
Garant Counterbore with Interchangeable Pilot Pins, 33 mm 156520 33
Garant

Counterbore with Interchangeable Pilot Pins, 33 mm

Zoro # G414389828
Mfr # 156520 33
product price: 
$199.99
/ea
Link Ua7-14MM Metric Shcs HSS Counterbore 72-L2-517
Link

Ua7-14MM Metric Shcs HSS Counterbore

Zoro # G7646898
Mfr # 72-L2-517
product price: 
$49.75
/ea
Kodiak Cutting Tools No. 8 Counterbores On Size Capscrew Style 5495688
Kodiak Cutting Tools

No. 8 Counterbores On Size Capscrew Style

Zoro # G8653120
Mfr # 5495688
product price: 
$49.65
/ea
Harvey Tool 0.3125 in. 5/16 Cutter dia x 1.00in. 1 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes 731620
Harvey Tool

0.3125 in. 5/16 Cutter dia x 1.00in. 1 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes

Zoro # G011325267
Mfr # 731620
product price: 
$86.29
/ea
Tungaloy Solid End Mill Head, VGC078L08.0R02-, PK2 6859332
Tungaloy

Solid End Mill Head, VGC078L08.0R02-, PK2

Zoro # G401778987
Mfr # 6859332
product price: 
$139.99
/pk of 2, $70.00/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
Garant Interchangeable Pilot Pin for Counterbore 156520 18-20, 9 mm 156620 5X9
Garant

Interchangeable Pilot Pin for Counterbore 156520 18-20, 9 mm

Zoro # G014389655
Mfr # 156620 5X9
product price: 
$33.15
/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
Internal Tool A Nc-625-625 N/C Counterbore 85-6251
Internal Tool

A Nc-625-625 N/C Counterbore

Zoro # G500402530
Mfr # 85-6251
product price: 
$333.99
/ea
Keo Counterbore, Decimal Inch, 4-1/2 in 902-000-313
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G921726406
Mfr # 902-000-313
product price: 
$92.89
/ea
Harvey Tool Counterbores - Flat Bottom 23380-C3
Harvey Tool

Counterbores - Flat Bottom

Zoro # G201018894
Mfr # 23380-C3
product price: 
$60.15
/ea
Super Tool Reduced Shank Counterbore, 29/32" D 52229
Super Tool

Reduced Shank Counterbore, 29/32" D

Zoro # G0331228
Mfr # 52229
product price: 
$135.99
/ea
Keo Counterbore Set, 7, Fractional Inch 902-000-192
Keo

Counterbore Set, 7, Fractional Inch

Zoro # G421725862
Mfr # 902-000-192
product price: 
$573.99
/ea
Link Ua4-5MM Metric Shcs HSS Counterbore 72-L2-512
Link

Ua4-5MM Metric Shcs HSS Counterbore

Zoro # G7643976
Mfr # 72-L2-512
product price: 
$26.65
/ea
Qualtech Counterbore, Morse Taper Shank, Series DEWCBR, 158 Bore, 818 Overall Length, 4 Shank Diamete DEWCBRTS1-5/8
Qualtech

Counterbore, Morse Taper Shank, Series DEWCBR, 158 Bore, 818 Overall Length, 4 Shank Diamete

Zoro # G008029123
Mfr # DEWCBRTS1-5/8
product price: 
$193.99
/ea
Counterbores (927 items) - Page 12
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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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