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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
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Counterbores (929 items) - Page 8

Cleveland Counterbore, 1.625" L, 0.188" dia., Bright C46598
Cleveland

Counterbore, 1.625" L, 0.188" dia., Bright

Zoro # G4842061
Mfr # C46598
product price:  $34.19
/ea
Cleveland Counterbore, 2.218" L, 0.313" dia., Bright C46622
Cleveland

Counterbore, 2.218" L, 0.313" dia., Bright

Zoro # G4851469
Mfr # C46622
product price:  $49.69
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0625" (1/16) 23362-C6
Harvey Tool

Counterbores - Flat Bottom, 0.0625" (1/16)

Zoro # G7154527
Mfr # 23362-C6
product price:  $51.19
/ea
Cleveland Counterbore, 1.750" L, 0.250" dia., Bright C46557
Cleveland

Counterbore, 1.750" L, 0.250" dia., Bright

Zoro # G4803187
Mfr # C46557
product price:  $31.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.0781" (5/64) 25478-C3
Harvey Tool

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

Zoro # G7242919
Mfr # 25478-C3
product price:  $59.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.1406" (9/64) 23409-C3
Harvey Tool

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

Zoro # G7258985
Mfr # 23409-C3
product price:  $47.55
/ea
Harvey Tool Counterbores - Flat Bottom, 0.1968" 2345M-C3
Harvey Tool

Counterbores - Flat Bottom, 0.1968"

Zoro # G7254067
Mfr # 2345M-C3
product price:  $63.85
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.3750" (3/8), Flute Length: 1" 25524-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.3750" (3/8), Flute Length: 1"

Zoro # G7262126
Mfr # 25524-C3
product price:  $138.99
/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:  $122.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.1181" 2343M-C6
Harvey Tool

Counterbores - Flat Bottom, 0.1181"

Zoro # G7161387
Mfr # 2343M-C6
product price:  $51.65
/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:  $135.99
/ea
Cleveland Counterbore, 1.375" L, 0.125" dia., Bright C46547
Cleveland

Counterbore, 1.375" L, 0.125" dia., Bright

Zoro # G4778538
Mfr # C46547
product price:  $26.39
/ea
Keo Counterbore, Nominal Fit, Size 1, Cobalt 902-000-038
Keo

Counterbore, Nominal Fit, Size 1, Cobalt

Zoro # G1932016
Mfr # 902-000-038
product price:  $450.99
/ea
Keo Counterbore, 1/32 Clearance, Size 3/4, Co 902-000-035
Keo

Counterbore, 1/32 Clearance, Size 3/4, Co

Zoro # G3346673
Mfr # 902-000-035
product price:  $233.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.1719" (11/64), Shank Dia.: 3/16" 23411
Harvey Tool

Counterbores - Flat Bottom, 0.1719" (11/64), Shank Dia.: 3/16"

Zoro # G7149329
Mfr # 23411
product price:  $40.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0900", Finish - Machining: AlTiN 23390-C3
Harvey Tool

Counterbores - Flat Bottom, 0.0900", Finish - Machining: AlTiN

Zoro # G7154439
Mfr # 23390-C3
product price:  $46.76
/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:  $47.95
/ea
Harvey Tool Counterbores - Flat Bottom 23420-C6
Harvey Tool

Counterbores - Flat Bottom

Zoro # G804195442
Mfr # 23420-C6
product price:  $72.59
/ea
Cleveland Counterbore, 1.812" L, 0.250" dia., Bright C46586
Cleveland

Counterbore, 1.812" L, 0.250" dia., Bright

Zoro # G4775710
Mfr # C46586
product price:  $33.79
/ea
Cleveland Counterbore, 1.375" L, 0.094" dia., Bright C46554
Cleveland

Counterbore, 1.375" L, 0.094" dia., Bright

Zoro # G4827897
Mfr # C46554
product price:  $28.79
/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:  $50.65
/ea
Harvey Tool Counterbores - Flat Bottom, 0.2969" (19/64) 23419-C3
Harvey Tool

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

Zoro # G7151395
Mfr # 23419-C3
product price:  $78.15
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0781" (5/64) 23378
Harvey Tool

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

Zoro # G7154868
Mfr # 23378
product price:  $40.99
/ea
Keo Counterbore, 1/32 Clearance, Size 7/8, Co 902-000-036
Keo

Counterbore, 1/32 Clearance, Size 7/8, Co

Zoro # G2787671
Mfr # 902-000-036
product price:  $308.99
/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:  $40.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1094" (7/64) 25507
Harvey Tool

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

Zoro # G7245204
Mfr # 25507
product price:  $48.99
/ea
Drill America 7/16" X 1/4" Pilots for Counterbore DEWPIL7/16X1/4
Drill America

7/16" X 1/4" Pilots for Counterbore

Zoro # G1741180
Mfr # DEWPIL7/16X1/4
product price:  $10.09
/ea
Harvey Tool Counterbores - Flat Bottom 23432-C6
Harvey Tool

Counterbores - Flat Bottom

Zoro # G504195384
Mfr # 23432-C6
product price:  $152.99
/ea
Cleveland Counterbore, 1.625" L, 0.156" dia., Bright C46550
Cleveland

Counterbore, 1.625" L, 0.156" dia., Bright

Zoro # G4759732
Mfr # C46550
product price:  $28.79
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0469" (3/64) 23347-C3
Harvey Tool

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

Zoro # G7151359
Mfr # 23347-C3
product price:  $47.95
/ea
Cleveland Counterbore, 2.062" L, 0.250" dia., Bright C46657
Cleveland

Counterbore, 2.062" L, 0.250" dia., Bright

Zoro # G4795353
Mfr # C46657
product price:  $55.59
/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:  $276.99
/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:  $53.65
/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:  $47.45
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2187" (7/32), Number of Flutes: 4 25514
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.2187" (7/32), Number of Flutes: 4

Zoro # G7261444
Mfr # 25514
product price:  $80.45
/ea
Harvey Tool Counterbores - Flat Bottom, 0.2362" 2346M-C3
Harvey Tool

Counterbores - Flat Bottom, 0.2362"

Zoro # G7259037
Mfr # 2346M-C3
product price:  $63.85
/ea
Counterbores (929 items) - Page 8
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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

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Square End MillsHammer Drill BitsExtra Long Drill BitsRound DiesSpiral Flute 3-Flute Taps
#50 master linkcleveland counterbore5/8 counterborecounter bore pilot5/16 counterbore
counter bore5/16 cobalt6-piece damask jacquard/solid1/4 counterbore50 chain link

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