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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
  8. /
  9. Counterbores

Counterbores (927 items) - Page 18

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, 0.2812" (9/32), Number of Flutes: 4 23418
Harvey Tool

Counterbores - Flat Bottom, 0.2812" (9/32), Number of Flutes: 4

Zoro # G7152460
Mfr # 23418
product price: 
$82.19
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0937" (3/32) 23393-C6
Harvey Tool

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

Zoro # G7155105
Mfr # 23393-C6
product price: 
$61.89
/ea
Keo Counterbore, Decimal Inch, 5 in 902-000-141
Keo

Counterbore, Decimal Inch, 5 in

Zoro # G521725823
Mfr # 902-000-141
product price: 
$93.39
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2969" (19/64) 25519
Harvey Tool

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

Zoro # G7161536
Mfr # 25519
product price: 
$129.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.4724" 23476-C3
Harvey Tool

Counterbores - Flat Bottom, 0.4724"

Zoro # G7253988
Mfr # 23476-C3
product price: 
$174.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.2656" (17/64) 23417-C3
Harvey Tool

Counterbores - Flat Bottom, 0.2656" (17/64)

Zoro # G7149575
Mfr # 23417-C3
product price: 
$97.15
/ea
Keo Counterbore, Close Fit, Size 7/8, Cobalt 902-000-037
Keo

Counterbore, Close Fit, Size 7/8, Cobalt

Zoro # G1600033
Mfr # 902-000-037
product price: 
$322.99
/ea
Keo Counterbore, Decimal Inch, 3 in 902-000-105
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G121725889
Mfr # 902-000-105
product price: 
$64.49
/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
Keo Counterbore, Decimal Inch, 3 in 902-000-333
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G421725886
Mfr # 902-000-333
product price: 
$57.29
/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, 7 in 902-000-174
Keo

Counterbore, Decimal Inch, 7 in

Zoro # G221725512
Mfr # 902-000-174
product price: 
$258.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.6250" (5/8) 23440
Harvey Tool

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

Zoro # G7158964
Mfr # 23440
product price: 
$252.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.2500" (1/4), Material - Machining: Carbide 23416
Harvey Tool

Counterbores - Flat Bottom, 0.2500" (1/4), Material - Machining: Carbide

Zoro # G7153924
Mfr # 23416
product price: 
$67.29
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2362" 2556M-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.2362"

Zoro # G7164817
Mfr # 2556M-C3
product price: 
$121.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0700", Flute Length: 0.2800" 23370
Harvey Tool

Counterbores - Flat Bottom, 0.0700", Flute Length: 0.2800"

Zoro # G7154280
Mfr # 23370
product price: 
$51.29
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2812" (9/32) 25518
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.2812" (9/32)

Zoro # G7263176
Mfr # 25518
product price: 
$117.99
/ea
Keo Counterbore, Decimal Inch, 5 in 902-000-307
Keo

Counterbore, Decimal Inch, 5 in

Zoro # G821726605
Mfr # 902-000-307
product price: 
$127.99
/ea
Harvey Tool 0.1750'' Cutter DIA x 0.6250'', 5/8 Flute Length - 4 FL - AlTiN Coated 23574-C3
Harvey Tool

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

Zoro # G813081699
Mfr # 23574-C3
product price: 
$52.19
/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, 0.6875" (11/16), Shank Dia.: 3/4" 23444
Harvey Tool

Counterbores - Flat Bottom, 0.6875" (11/16), Shank Dia.: 3/4"

Zoro # G7257637
Mfr # 23444
product price: 
$373.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.0469" (3/64), Number of Flutes: 4 25447
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.0469" (3/64), Number of Flutes: 4

Zoro # G7257795
Mfr # 25447
product price: 
$59.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.6875" (11/16) 23444-C3
Harvey Tool

Counterbores - Flat Bottom, 0.6875" (11/16)

Zoro # G7258714
Mfr # 23444-C3
product price: 
$410.99
/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, 0.1875" (3/16) 23412
Harvey Tool

Counterbores - Flat Bottom, 0.1875" (3/16)

Zoro # G7151149
Mfr # 23412
product price: 
$49.15
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2344" (15/64) 25515-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.2344" (15/64)

Zoro # G7262774
Mfr # 25515-C3
product price: 
$114.99
/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
Drill America No 10 13/64" Continuous Pilot Capscrew Counterbore DEWCSCBR10
Drill America

No 10 13/64" Continuous Pilot Capscrew Counterbore

Zoro # G1741950
Mfr # DEWCSCBR10
product price: 
$26.35
/ea
Keo Counterbore, Metric, 71 mm 902-000-198
Keo

Counterbore, Metric, 71 mm

Zoro # G721725548
Mfr # 902-000-198
product price: 
$53.79
/ea
Keo Counterbore, Metric, 100 mm 902-000-264
Keo

Counterbore, Metric, 100 mm

Zoro # G921727458
Mfr # 902-000-264
product price: 
$112.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.4724" 23476
Harvey Tool

Counterbores - Flat Bottom, 0.4724"

Zoro # G7242989
Mfr # 23476
product price: 
$150.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.3125" (5/16) 25520-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.3125" (5/16)

Zoro # G7166034
Mfr # 25520-C3
product price: 
$137.99
/ea
Keo Counterbore, Decimal Inch, 7 in 902-000-171
Keo

Counterbore, Decimal Inch, 7 in

Zoro # G421724704
Mfr # 902-000-171
product price: 
$258.99
/ea
Keo Counterbore, Decimal Inch, 7 in 902-000-177
Keo

Counterbore, Decimal Inch, 7 in

Zoro # G121727029
Mfr # 902-000-177
product price: 
$382.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1575" 2554M-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.1575"

Zoro # G7164835
Mfr # 2554M-C3
product price: 
$85.89
/ea
Counterbores (927 items) - Page 18
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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 DrillsHex Dies
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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