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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 5

Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.3437" (11/32) 25522
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.3437" (11/32)

Zoro # G7263255
Mfr # 25522
product price: 
$144.99
/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
Keo Counterbore, Metric, 71 mm 902-000-213
Keo

Counterbore, Metric, 71 mm

Zoro # G921725638
Mfr # 902-000-213
product price: 
$59.29
/ea
Keo Counterbore, Decimal Inch, 5 in 902-000-150
Keo

Counterbore, Decimal Inch, 5 in

Zoro # G421725626
Mfr # 902-000-150
product price: 
$109.99
/ea
Keo Counterbore, Decimal Inch, 3 in 902-000-099
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G621726720
Mfr # 902-000-099
product price: 
$63.69
/ea
Harvey Tool 0.3320'' Cutter DIA x 1.0000'', 1 Flute Length - 4 FL 23731
Harvey Tool

0.3320'' Cutter DIA x 1.0000'', 1 Flute Length - 4 FL

Zoro # G113082129
Mfr # 23731
product price: 
$97.89
/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
Harvey Tool Counterbores - Flat Bottom, 0.0900" 23390
Harvey Tool

Counterbores - Flat Bottom, 0.0900"

Zoro # G7253954
Mfr # 23390
product price: 
$51.29
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.0937" (3/32) 25493-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.0937" (3/32)

Zoro # G7254618
Mfr # 25493-C3
product price: 
$71.89
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2500" (1/4) 25516
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.2500" (1/4)

Zoro # G7242998
Mfr # 25516
product price: 
$99.99
/ea
Keo Counterbore, Decimal Inch, 3 in 902-000-323
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G621727673
Mfr # 902-000-323
product price: 
$71.15
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0937" (3/32) 23393-C3
Harvey Tool

Counterbores - Flat Bottom, 0.0937" (3/32)

Zoro # G7149590
Mfr # 23393-C3
product price: 
$60.15
/ea
Harvey Tool Counterbores - Flat Bottom, 0.2362" 2346M
Harvey Tool

Counterbores - Flat Bottom, 0.2362"

Zoro # G7252518
Mfr # 2346M
product price: 
$71.29
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.0625" (1/16), Shank Dia.: 1/8" 25462
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.0625" (1/16), Shank Dia.: 1/8"

Zoro # G7253997
Mfr # 25462
product price: 
$61.69
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2031" (13/64) 25513
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.2031" (13/64)

Zoro # G7242946
Mfr # 25513
product price: 
$99.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.0787" 2542M
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.0787"

Zoro # G7160459
Mfr # 2542M
product price: 
$62.69
/ea
Harvey Tool Counterbores - Flat Bottom, 0.1968" 2345M-C3
Harvey Tool

Counterbores - Flat Bottom, 0.1968"

Zoro # G7254067
Mfr # 2345M-C3
product price: 
$79.39
/ea
Harvey Tool 0.3320'' Cutter DIA x 1.0000'', 1 Flute Length - 4 FL - AlTiN Coated 23731-C3
Harvey Tool

0.3320'' Cutter DIA x 1.0000'', 1 Flute Length - 4 FL - AlTiN Coated

Zoro # G813082092
Mfr # 23731-C3
product price: 
$112.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.5625" (9/16), Number of Flutes: 4 23436
Harvey Tool

Counterbores - Flat Bottom, 0.5625" (9/16), Number of Flutes: 4

Zoro # G7155069
Mfr # 23436
product price: 
$224.99
/ea
Keo Counterbore, Decimal Inch, 6 in 902-000-302
Keo

Counterbore, Decimal Inch, 6 in

Zoro # G321727744
Mfr # 902-000-302
product price: 
$202.99
/ea
Keo Counterbore, Metric, 71 mm 902-000-207
Keo

Counterbore, Metric, 71 mm

Zoro # G821727039
Mfr # 902-000-207
product price: 
$59.29
/ea
Keo Counterbore, Metric, 80 mm 902-000-225
Keo

Counterbore, Metric, 80 mm

Zoro # G321727430
Mfr # 902-000-225
product price: 
$72.89
/ea
Drill America 1" X 7/16" Pilots for Counterbore DEWPIL1X7/16
Drill America

1" X 7/16" Pilots for Counterbore

Zoro # G1746135
Mfr # DEWPIL1X7/16
product price: 
$21.79
/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, 0.7500" (3/4) 23448
Harvey Tool

Counterbores - Flat Bottom, 0.7500" (3/4)

Zoro # G7245466
Mfr # 23448
product price: 
$347.99
/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
Harvey Tool Counterbores - Flat Bottom, 0.0394" 2331M-C3
Harvey Tool

Counterbores - Flat Bottom, 0.0394"

Zoro # G7148586
Mfr # 2331M-C3
product price: 
$60.15
/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
Harvey Tool Counterbores - Flat Bottom, 0.1575", Shank Dia.: 3/16" 2344M
Harvey Tool

Counterbores - Flat Bottom, 0.1575", Shank Dia.: 3/16"

Zoro # G7243025
Mfr # 2344M
product price: 
$49.15
/ea
Keo Counterbore, Decimal Inch, 6 in 902-000-168
Keo

Counterbore, Decimal Inch, 6 in

Zoro # G821725295
Mfr # 902-000-168
product price: 
$177.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.1181", Number of Flutes: 4 2343M-C3
Harvey Tool

Counterbores - Flat Bottom, 0.1181", Number of Flutes: 4

Zoro # G7164765
Mfr # 2343M-C3
product price: 
$60.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0787" 2332M-C3
Harvey Tool

Counterbores - Flat Bottom, 0.0787"

Zoro # G7257856
Mfr # 2332M-C3
product price: 
$59.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.1250" (1/8) 23408-C6
Harvey Tool

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

Zoro # G7154186
Mfr # 23408-C6
product price: 
$61.39
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.5000" (1/2) 25532-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.5000" (1/2)

Zoro # G7167048
Mfr # 25532-C3
product price: 
$237.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0312" (1/32) 23331
Harvey Tool

Counterbores - Flat Bottom, 0.0312" (1/32)

Zoro # G7256018
Mfr # 23331
product price: 
$51.29
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.0781" (5/64) 25478
Harvey Tool

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

Zoro # G7256438
Mfr # 25478
product price: 
$66.39
/ea
Counterbores (927 items) - Page 5
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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
metric shcsinterchangeable pilot counterborehigh speed steelcounter bore pilotpilot counterbore
cleveland counterbore1-1/4 in counterborecounterbores - flat bottom6-piece damask jacquard/solid5/8 counterbore

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