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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 21

Harvey Tool Counterbores - Flat Bottom, 0.1094" (7/64), Shank Dia.: 1/8" 23407
Harvey Tool

Counterbores - Flat Bottom, 0.1094" (7/64), Shank Dia.: 1/8"

Zoro # G7154615
Mfr # 23407
product price: 
$51.29
/ea
Keo Counterbore, Decimal Inch, 3 in 902-000-331
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G121725711
Mfr # 902-000-331
product price: 
$60.19
/ea
Harvey Tool Counterbores - Flat Bottom, 0.6250" (5/8) 23440-C3
Harvey Tool

Counterbores - Flat Bottom, 0.6250" (5/8)

Zoro # G7240155
Mfr # 23440-C3
product price: 
$282.99
/ea
Keo Counterbore, Decimal Inch, 6 in 902-000-159
Keo

Counterbore, Decimal Inch, 6 in

Zoro # G421726128
Mfr # 902-000-159
product price: 
$125.99
/ea
Harvey Tool 0.1750'' Cutter DIA x 0.6250'', 5/8 Flute Length - 4 FL 23574
Harvey Tool

0.1750'' Cutter DIA x 0.6250'', 5/8 Flute Length - 4 FL

Zoro # G413081570
Mfr # 23574
product price: 
$48.49
/ea
Keo Counterbore, Decimal Inch, 3 in 902-000-325
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G921726086
Mfr # 902-000-325
product price: 
$69.59
/ea
Keo Counterbore, Decimal Inch, 7 in 902-000-183
Keo

Counterbore, Decimal Inch, 7 in

Zoro # G521725250
Mfr # 902-000-183
product price: 
$518.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0781" (5/64) 23378
Harvey Tool

Counterbores - Flat Bottom, 0.0781" (5/64)

Zoro # G7154868
Mfr # 23378
product price: 
$51.29
/ea
Keo Counterbore, Metric, 100 mm 902-000-258
Keo

Counterbore, Metric, 100 mm

Zoro # G421725374
Mfr # 902-000-258
product price: 
$92.19
/ea
Harvey Tool Counterbores - Flat Bottom, 0.2969" (19/64) 23419
Harvey Tool

Counterbores - Flat Bottom, 0.2969" (19/64)

Zoro # G7154448
Mfr # 23419
product price: 
$86.15
/ea
Keo Counterbore, Metric, 80 mm 902-000-231
Keo

Counterbore, Metric, 80 mm

Zoro # G321725443
Mfr # 902-000-231
product price: 
$72.89
/ea
Keo Counterbore, Decimal Inch, 3 in 902-000-084
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G321727010
Mfr # 902-000-084
product price: 
$59.39
/ea
Harvey Tool Counterbores - Flat Bottom, 0.1181" 2343M
Harvey Tool

Counterbores - Flat Bottom, 0.1181"

Zoro # G7161420
Mfr # 2343M
product price: 
$51.29
/ea
Drill America 1/2" 17/32" Continuous Pilot Capscrew Counterbore DEWCSCBR1/2
Drill America

1/2" 17/32" Continuous Pilot Capscrew Counterbore

Zoro # G1739406
Mfr # DEWCSCBR1/2
product price: 
$44.79
/ea
Keo Counterbore, Decimal Inch, 3 in 902-000-075
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G221726151
Mfr # 902-000-075
product price: 
$54.15
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.0394" 2541M
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.0394"

Zoro # G7161807
Mfr # 2541M
product price: 
$61.69
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 11X6.6 mm 156020 11X6,6
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 11X6.6 mm

Zoro # G814389626
Mfr # 156020 11X6,6
product price: 
$23.15
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 18X11 mm 156020 18X11
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 18X11 mm

Zoro # G814389527
Mfr # 156020 18X11
product price: 
$44.15
/ea
Drill America 7/8" 15/16" Continuous Pilot Capscrew Counterbore DEWCSCBR7/8
Drill America

7/8" 15/16" Continuous Pilot Capscrew Counterbore

Zoro # G1739178
Mfr # DEWCSCBR7/8
product price: 
$120.99
/ea
Keo Counterbore, Decimal Inch, 3 in 902-000-090
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G421725336
Mfr # 902-000-090
product price: 
$61.89
/ea
Keo Counterbore, Metric, 71 mm 902-000-201
Keo

Counterbore, Metric, 71 mm

Zoro # G121727661
Mfr # 902-000-201
product price: 
$52.19
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1250" (1/8) 25508-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.1250" (1/8)

Zoro # G7242894
Mfr # 25508-C3
product price: 
$71.89
/ea
Harvey Tool Counterbores - Flat Bottom, 0.4687" (15/32) 23430-C3
Harvey Tool

Counterbores - Flat Bottom, 0.4687" (15/32)

Zoro # G7159208
Mfr # 23430-C3
product price: 
$178.99
/ea
Drill America No 3 .098mm Machine Screw Solid Counterbore DEWCBRSOL3
Drill America

No 3 .098mm Machine Screw Solid Counterbore

Zoro # G1739756
Mfr # DEWCBRSOL3
product price: 
$10.59
/ea
Keo Counterbore, Decimal Inch, 3 in 902-000-332
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G221725291
Mfr # 902-000-332
product price: 
$58.15
/ea
Keo Counterbore, Metric, 100 mm 902-000-243
Keo

Counterbore, Metric, 100 mm

Zoro # G621725938
Mfr # 902-000-243
product price: 
$85.79
/ea
Keo Counterbore, Decimal Inch, 3 in 902-000-328
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G521725038
Mfr # 902-000-328
product price: 
$63.39
/ea
Harvey Tool Counterbores - Flat Bottom, 0.3150", Finish - Machining: AlTiN 2348M-C3
Harvey Tool

Counterbores - Flat Bottom, 0.3150", Finish - Machining: AlTiN

Zoro # G7260674
Mfr # 2348M-C3
product price: 
$116.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1562" (5/32) 25510-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.1562" (5/32)

Zoro # G7255415
Mfr # 25510-C3
product price: 
$85.15
/ea
Drill America 5/8" 21/32" Continuous Pilot Capscrew Counterbore DEWCSCBR5/8
Drill America

5/8" 21/32" Continuous Pilot Capscrew Counterbore

Zoro # G1742644
Mfr # DEWCSCBR5/8
product price: 
$54.45
/ea
Harvey Tool Counterbores - Flat Bottom, 0.1562" (5/32) 23410-C3
Harvey Tool

Counterbores - Flat Bottom, 0.1562" (5/32)

Zoro # G7155306
Mfr # 23410-C3
product price: 
$58.29
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1181", Shank Dia.: 1/8" 2553M
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.1181", Shank Dia.: 1/8"

Zoro # G7263359
Mfr # 2553M
product price: 
$62.69
/ea
Harvey Tool 0.4220'', 27/64 Cutter DIA x 1.0000'', 1 Flute Length - 4 FL 23427
Harvey Tool

0.4220'', 27/64 Cutter DIA x 1.0000'', 1 Flute Length - 4 FL

Zoro # G213081602
Mfr # 23427
product price: 
$120.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0700" 23370-C3
Harvey Tool

Counterbores - Flat Bottom, 0.0700"

Zoro # G7149365
Mfr # 23370-C3
product price: 
$58.49
/ea
Keo Counterbore, Decimal Inch, 3 in 902-000-096
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G721727566
Mfr # 902-000-096
product price: 
$62.19
/ea
Keo Counterbore, Metric, 80 mm 902-000-228
Keo

Counterbore, Metric, 80 mm

Zoro # G721725272
Mfr # 902-000-228
product price: 
$69.29
/ea
Counterbores (927 items) - Page 21
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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 BitsReduced Shank Drill BitsCountersinksTap Sets
Square End MillsAuger Drill BitsDrill Bit SetsCenter DrillsHammer Drill Bits
cleveland counterborecounter bore pilot5/8 counterborepilot counterboreinterchangeable pilot counterbore
high speed steelmetric shcs1-1/4 in counterbore6-piece damask jacquard/solidcounter bore set

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