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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

Keo Counterbore, Decimal Inch, 4-1/2 in 902-000-111
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G321727119
Mfr # 902-000-111
product price:  $67.69
/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
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
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 6.5X3.2 mm 156020 6,5X3,2
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 6.5X3.2 mm

Zoro # G514389612
Mfr # 156020 6,5X3,2
product price:  $24.55
/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, 0.1575", 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
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
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
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.3150" 2558M
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.3150"

Zoro # G7261329
Mfr # 2558M
product price:  $155.99
/ea
Keo Counterbore, Decimal Inch, 4-1/2 in 902-000-132
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G521726745
Mfr # 902-000-132
product price:  $76.79
/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
Harvey Tool 1/2  in. Cutter dia. x 1  in. 1 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes 731632-C3
Harvey Tool

1/2 in. Cutter dia. x 1 in. 1 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes

Zoro # G811325351
Mfr # 731632-C3
product price:  $186.99
/ea
Harvey Tool Counterbores - Flat Bottom 23320-C3
Harvey Tool

Counterbores - Flat Bottom

Zoro # G601020039
Mfr # 23320-C3
product price:  $59.59
/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
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2344" (15/64) 25515
Harvey Tool

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

Zoro # G7252606
Mfr # 25515
product price:  $101.99
/ea
Keo Counterbore, Metric, 71 mm 902-000-222
Keo

Counterbore, Metric, 71 mm

Zoro # G321724835
Mfr # 902-000-222
product price:  $64.39
/ea
Harvey Tool 0.0937 in. 3/32 Cutter dia x 3/8 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes 731593
Harvey Tool

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

Zoro # G511325064
Mfr # 731593
product price:  $54.79
/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 0.5000 in. 1/2 Cutter dia x 1.0000 in. 1 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes 731632
Harvey Tool

0.5000 in. 1/2 Cutter dia x 1.0000 in. 1 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes

Zoro # G011325441
Mfr # 731632
product price:  $164.99
/ea
Harvey Tool 0.2900'' Cutter DIA x 0.8750'', 7/8 Flute Length - 4 FL 23689
Harvey Tool

0.2900'' Cutter DIA x 0.8750'', 7/8 Flute Length - 4 FL

Zoro # G913082206
Mfr # 23689
product price:  $80.29
/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, 0.1406" (9/64) 23409
Harvey Tool

Counterbores - Flat Bottom, 0.1406" (9/64)

Zoro # G7149338
Mfr # 23409
product price:  $49.15
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 6.5X3.4 mm 156020 6,5X3,4
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 6.5X3.4 mm

Zoro # G214389462
Mfr # 156020 6,5X3,4
product price:  $24.55
/ea
Harvey Tool Counterbores - Flat Bottom 23380-C3
Harvey Tool

Counterbores - Flat Bottom

Zoro # G201018894
Mfr # 23380-C3
product price:  $60.15
/ea
Keo Counterbore, Decimal Inch, 4-1/2 in 902-000-315
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G621725426
Mfr # 902-000-315
product price:  $86.15
/ea
Keo Counterbore, Decimal Inch, 5 in 902-000-308
Keo

Counterbore, Decimal Inch, 5 in

Zoro # G721725975
Mfr # 902-000-308
product price:  $127.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0312" (1/32) 23331-C3
Harvey Tool

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

Zoro # G7153985
Mfr # 23331-C3
product price:  $60.15
/ea
Keo Counterbore, Decimal Inch, 5 in 902-000-310
Keo

Counterbore, Decimal Inch, 5 in

Zoro # G321727607
Mfr # 902-000-310
product price:  $110.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.2344" (15/64) 23415
Harvey Tool

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

Zoro # G7154019
Mfr # 23415
product price:  $67.29
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.0312" (1/32), Shank Dia.: 1/8" 25431
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.0312" (1/32), Shank Dia.: 1/8"

Zoro # G7257244
Mfr # 25431
product price:  $64.19
/ea
Keo Counterbore, Decimal Inch, 4-1/2 in 902-000-117
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G721727269
Mfr # 902-000-117
product price:  $73.39
/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, Decimal Inch, 3 in 902-000-087
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G321727355
Mfr # 902-000-087
product price:  $59.39
/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
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
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.3150" 2558M-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.3150"

Zoro # G7247006
Mfr # 2558M-C3
product price:  $171.99
/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 BitsReduced Shank Drill BitsCountersinksSquare End Mills
Drill Bit SetsCenter DrillsTap SetsTap WrenchesAuger 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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