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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

Harvey Tool Counterbores - Flat Bottom, 0.3125" (5/16), Finish - Machining: Uncoated 23420
Harvey Tool

Counterbores - Flat Bottom, 0.3125" (5/16), Finish - Machining: Uncoated

Zoro # G7149347
Mfr # 23420
product price: 
$82.89
/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
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2500" (1/4) 25516-C3
Harvey Tool

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

Zoro # G7248178
Mfr # 25516-C3
product price: 
$114.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2969" (19/64) 25519-C3
Harvey Tool

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

Zoro # G7167109
Mfr # 25519-C3
product price: 
$142.99
/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
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: 
$45.85
/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
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, 0.1875" (3/16) 23412
Harvey Tool

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

Zoro # G7151149
Mfr # 23412
product price: 
$49.15
/ea
Keo Counterbore, Metric, 71 mm 902-000-219
Keo

Counterbore, Metric, 71 mm

Zoro # G621726607
Mfr # 902-000-219
product price: 
$62.29
/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, 0.2812" (9/32) 23418-C3
Harvey Tool

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

Zoro # G7154116
Mfr # 23418-C3
product price: 
$97.15
/ea
Keo Counterbore, Decimal Inch, 6 in 902-000-301
Keo

Counterbore, Decimal Inch, 6 in

Zoro # G021726115
Mfr # 902-000-301
product price: 
$202.99
/ea
Drill America No 5 .124mm Machine Screw Solid Counterbore DEWCBRSOL5
Drill America

No 5 .124mm Machine Screw Solid Counterbore

Zoro # G1744997
Mfr # DEWCBRSOL5
product price: 
$13.59
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0550" 23355
Harvey Tool

Counterbores - Flat Bottom, 0.0550"

Zoro # G7157564
Mfr # 23355
product price: 
$51.29
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 18X10.5 mm 156020 18X10,5
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 18X10.5 mm

Zoro # G414389545
Mfr # 156020 18X10,5
product price: 
$45.85
/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, 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, 0.2031" (13/64) 23413
Harvey Tool

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

Zoro # G7150948
Mfr # 23413
product price: 
$67.29
/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, 0.0787" 2332M-C3
Harvey Tool

Counterbores - Flat Bottom, 0.0787"

Zoro # G7257856
Mfr # 2332M-C3
product price: 
$59.99
/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 902-000-330
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G621725716
Mfr # 902-000-330
product price: 
$61.49
/ea
Keo Counterbore, Decimal Inch, 7 in 902-000-296
Keo

Counterbore, Decimal Inch, 7 in

Zoro # G121726442
Mfr # 902-000-296
product price: 
$585.99
/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
Keo Counterbore, Decimal Inch, 7 in 902-000-180
Keo

Counterbore, Decimal Inch, 7 in

Zoro # G221726816
Mfr # 902-000-180
product price: 
$382.99
/ea
Drill America No 12 .215mm Machine Screw Solid Counterbore DEWCBRSOL12
Drill America

No 12 .215mm Machine Screw Solid Counterbore

Zoro # G1739564
Mfr # DEWCBRSOL12
product price: 
$16.25
/ea
Harvey Tool Counterbores - Flat Bottom, 0.4375" (7/16) 23428-C3
Harvey Tool

Counterbores - Flat Bottom, 0.4375" (7/16)

Zoro # G7158544
Mfr # 23428-C3
product price: 
$142.99
/ea
Keo Counterbore, Metric, 80 mm 902-000-234
Keo

Counterbore, Metric, 80 mm

Zoro # G821726940
Mfr # 902-000-234
product price: 
$75.39
/ea
Harvey Tool Counterbores - Flat Bottom, 0.3750" (3/8) 23424-C6
Harvey Tool

Counterbores - Flat Bottom, 0.3750" (3/8)

Zoro # G7158885
Mfr # 23424-C6
product price: 
$119.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.2656" (17/64) 23417
Harvey Tool

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

Zoro # G7153215
Mfr # 23417
product price: 
$86.15
/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, 0.1250" (1/8), Neck Dia.: 0.1130" 25508
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.1250" (1/8), Neck Dia.: 0.1130"

Zoro # G7258294
Mfr # 25508
product price: 
$62.69
/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, 0.2344" (15/64) 25515
Harvey Tool

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

Zoro # G7252606
Mfr # 25515
product price: 
$101.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.1094" (7/64) 23407-C3
Harvey Tool

Counterbores - Flat Bottom, 0.1094" (7/64)

Zoro # G7152436
Mfr # 23407-C3
product price: 
$60.15
/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 BitsCountersinksReduced Shank Drill BitsDrill Bit Sets
Hammer Drill BitsCenter DrillsTap SetsAuger Drill BitsTap Wrenches
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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