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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 17

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
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1562" (5/32) 25510
Harvey Tool

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

Zoro # G7245195
Mfr # 25510
product price: 
$73.19
/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, 0.5000" (1/2) 23432-C3
Harvey Tool

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

Zoro # G7162927
Mfr # 23432-C3
product price: 
$174.99
/ea
Keo Counterbore, Decimal Inch, 6 in 902-000-306
Keo

Counterbore, Decimal Inch, 6 in

Zoro # G421727699
Mfr # 902-000-306
product price: 
$146.99
/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
Harvey Tool Counterbores - Flat Bottom, 0.3750" (3/8), Finish - Machining: AlTiN 23424-C3
Harvey Tool

Counterbores - Flat Bottom, 0.3750" (3/8), Finish - Machining: AlTiN

Zoro # G7150966
Mfr # 23424-C3
product price: 
$110.99
/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, 0.2362" 2346M-C6
Harvey Tool

Counterbores - Flat Bottom, 0.2362"

Zoro # G7255850
Mfr # 2346M-C6
product price: 
$81.89
/ea
Drill America 1/2" HSS Solid Counterbore DEWCBRSOL1/2
Drill America

1/2" HSS Solid Counterbore

Zoro # G1742154
Mfr # DEWCBRSOL1/2
product price: 
$26.15
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0394" 2331M
Harvey Tool

Counterbores - Flat Bottom, 0.0394"

Zoro # G7254870
Mfr # 2331M
product price: 
$53.69
/ea
Harvey Tool Counterbores - Flat Bottom, 0.2500" (1/4), Flute Length: 7/8" 23416-C3
Harvey Tool

Counterbores - Flat Bottom, 0.2500" (1/4), Flute Length: 7/8"

Zoro # G7151526
Mfr # 23416-C3
product price: 
$75.25
/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
Harvey Tool Counterbores - Flat Bottom, 0.1875" (3/16), Overall Length: 2" 23412-C6
Harvey Tool

Counterbores - Flat Bottom, 0.1875" (3/16), Overall Length: 2"

Zoro # G7153206
Mfr # 23412-C6
product price: 
$60.49
/ea
Harvey Tool Counterbores - Flat Bottom, 0.3937" 2340M-C3
Harvey Tool

Counterbores - Flat Bottom, 0.3937"

Zoro # G7150975
Mfr # 2340M-C3
product price: 
$138.99
/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
Harvey Tool Counterbores - Flat Bottom, 0.1875" (3/16) 23412-C3
Harvey Tool

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

Zoro # G7259877
Mfr # 23412-C3
product price: 
$58.29
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 15X9 mm 156020 15X9
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 15X9 mm

Zoro # G314389669
Mfr # 156020 15X9
product price: 
$36.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0469" (3/64) 23347
Harvey Tool

Counterbores - Flat Bottom, 0.0469" (3/64)

Zoro # G7151474
Mfr # 23347
product price: 
$51.29
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2656" (17/64) 25517-C3
Harvey Tool

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

Zoro # G7166436
Mfr # 25517-C3
product price: 
$137.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.3281" (21/64), Flute Length: 1" 23421-C3
Harvey Tool

Counterbores - Flat Bottom, 0.3281" (21/64), Flute Length: 1"

Zoro # G7151736
Mfr # 23421-C3
product price: 
$116.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1719" (11/64) 25511-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.1719" (11/64)

Zoro # G7242885
Mfr # 25511-C3
product price: 
$85.79
/ea
Harvey Tool Counterbores - Flat Bottom, 0.2344" (15/64) 23415-C3
Harvey Tool

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

Zoro # G7150957
Mfr # 23415-C3
product price: 
$78.59
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1406" (9/64) 25509-C3
Harvey Tool

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

Zoro # G7248905
Mfr # 25509-C3
product price: 
$85.79
/ea
Harvey Tool Counterbores - Flat Bottom, 0.3150" 2348M
Harvey Tool

Counterbores - Flat Bottom, 0.3150"

Zoro # G7257314
Mfr # 2348M
product price: 
$98.19
/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
Keo Counterbore, Decimal Inch, 6 in 902-000-305
Keo

Counterbore, Decimal Inch, 6 in

Zoro # G121727098
Mfr # 902-000-305
product price: 
$146.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1181" 2553M-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.1181"

Zoro # G7249620
Mfr # 2553M-C3
product price: 
$71.19
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0781" (5/64) 23378-C3
Harvey Tool

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

Zoro # G7151964
Mfr # 23378-C3
product price: 
$59.49
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 11X6.4 mm 156020 11X6,4
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 11X6.4 mm

Zoro # G414389675
Mfr # 156020 11X6,4
product price: 
$23.15
/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
Drill America 7/8" X 7/16" Pilots for Counterbore DEWPIL7/8X7/16
Drill America

7/8" X 7/16" Pilots for Counterbore

Zoro # G1744394
Mfr # DEWPIL7/8X7/16
product price: 
$16.79
/ea
Keo Counterbore, Metric, 100 mm 902-000-255
Keo

Counterbore, Metric, 100 mm

Zoro # G521726073
Mfr # 902-000-255
product price: 
$98.89
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.4375" (7/16) 25528-C3
Harvey Tool

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

Zoro # G7265504
Mfr # 25528-C3
product price: 
$192.99
/ea
Keo Counterbore, Decimal Inch, 3 in 902-000-102
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G221725055
Mfr # 902-000-102
product price: 
$63.69
/ea
Harvey Tool Counterbores - Flat Bottom, 0.7500" (3/4) 23448-C3
Harvey Tool

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

Zoro # G7257804
Mfr # 23448-C3
product price: 
$373.99
/ea
Counterbores (927 items) - Page 17
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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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