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  1. Home
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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 5

Keo Counterbore, 1/64 Clearance, Size 5/16, Co 902-000-020
Keo

Counterbore, 1/64 Clearance, Size 5/16, Co

Zoro # G0742113
Mfr # 902-000-020
product price:  $74.69
/ea
Harvey Tool 0.4375 in. 7/16 Cutter dia. x 1 in. 1 Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated 731628-C3
Harvey Tool

0.4375 in. 7/16 Cutter dia. x 1 in. 1 Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated

Zoro # G511325422
Mfr # 731628-C3
product price:  $111.99
/ea
Cleveland Counterbore, 8.813" L, 1.000" dia., Bright C91835
Cleveland

Counterbore, 8.813" L, 1.000" dia., Bright

Zoro # G4844907
Mfr # C91835
product price:  $339.99
/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:  $45.45
/ea
Cleveland Counterbore, 8.250" L, 0.750" dia., Bright C91726
Cleveland

Counterbore, 8.250" L, 0.750" dia., Bright

Zoro # G4836653
Mfr # C91726
product price:  $209.99
/ea
Cleveland Counterbore, 7.000" L, 0.500" dia., Bright C91717
Cleveland

Counterbore, 7.000" L, 0.500" dia., Bright

Zoro # G4756217
Mfr # C91717
product price:  $182.99
/ea
Drill America No 8 11/64" Continuous Pilot Capscrew Counterbore DEWCSCBR8
Drill America

No 8 11/64" Continuous Pilot Capscrew Counterbore

Zoro # G1741278
Mfr # DEWCSCBR8
product price:  $23.19
/ea
Cleveland Counterbore, 2.187" L, 0.250" dia., Bright C46687
Cleveland

Counterbore, 2.187" L, 0.250" dia., Bright

Zoro # G4818867
Mfr # C46687
product price:  $68.99
/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, 0.0312" (1/32) 23331-C3
Harvey Tool

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

Zoro # G7153985
Mfr # 23331-C3
product price:  $47.95
/ea
Drill America 3/4" X 7/16" Pilots for Counterbore DEWPIL3/4X7/16
Drill America

3/4" X 7/16" Pilots for Counterbore

Zoro # G1741567
Mfr # DEWPIL3/4X7/16
product price:  $11.45
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0550" 23355
Harvey Tool

Counterbores - Flat Bottom, 0.0550"

Zoro # G7157564
Mfr # 23355
product price:  $40.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.4375" (7/16), Flute Length: 1" 23428
Harvey Tool

Counterbores - Flat Bottom, 0.4375" (7/16), Flute Length: 1"

Zoro # G7157485
Mfr # 23428
product price:  $97.85
/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:  $297.99
/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 - 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, 0.2656" (17/64) 23417-C3
Harvey Tool

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

Zoro # G7149575
Mfr # 23417-C3
product price:  $78.15
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2031" (13/64) 25513
Harvey Tool

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

Zoro # G7242946
Mfr # 25513
product price:  $83.65
/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:  $308.99
/ea
Cleveland Counterbore, 1.375" L, 0.156" dia., Bright C46578
Cleveland

Counterbore, 1.375" L, 0.156" dia., Bright

Zoro # G4783508
Mfr # C46578
product price:  $29.99
/ea
Keo Counterbore, Close Fit, Size 5/8, Cobalt 902-000-031
Keo

Counterbore, Close Fit, Size 5/8, Cobalt

Zoro # G2981903
Mfr # 902-000-031
product price:  $144.99
/ea
Cleveland Counterbore, 1.375" L, 0.156" dia., Bright C46597
Cleveland

Counterbore, 1.375" L, 0.156" dia., Bright

Zoro # G4853657
Mfr # C46597
product price:  $34.19
/ea
Drill America 1/2" X 1/4" Pilots for Counterbore DEWPIL1/2X1/4
Drill America

1/2" X 1/4" Pilots for Counterbore

Zoro # G1742879
Mfr # DEWPIL1/2X1/4
product price:  $8.45
/ea
Harvey Tool Counterbores - Flat Bottom, 0.6250" (5/8) 23440-C3
Harvey Tool

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

Zoro # G7240155
Mfr # 23440-C3
product price:  $224.99
/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:  $95.59
/ea
Cleveland Counterbore, 2.062" L, 0.188" dia., Bright C46592
Cleveland

Counterbore, 2.062" L, 0.188" dia., Bright

Zoro # G4783937
Mfr # C46592
product price:  $34.19
/ea
Garant Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 6.5X2.9 mm 156220 6,5X2,9
Garant

Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 6.5X2.9 mm

Zoro # G814376060
Mfr # 156220 6,5X2,9
product price:  $25.99
/ea
Harvey Tool Counterbores - Flat Bottom 23320
Harvey Tool

Counterbores - Flat Bottom

Zoro # G601022507
Mfr # 23320
product price:  $42.19
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 6.5X3.9 mm 156020 6,5X3,9
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 6.5X3.9 mm

Zoro # G614389512
Mfr # 156020 6,5X3,9
product price:  $24.55
/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:  $39.15
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.0469" (3/64) 25447-C3
Harvey Tool

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

Zoro # G7255887
Mfr # 25447-C3
product price:  $59.99
/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:  $88.15
/ea
Harvey Tool Counterbores - Flat Bottom, 0.2187" (7/32) 23414-C3
Harvey Tool

Counterbores - Flat Bottom, 0.2187" (7/32)

Zoro # G7259204
Mfr # 23414-C3
product price:  $63.85
/ea
Harvey Tool Counterbores - Flat Bottom, 0.4687" (15/32) 23430
Harvey Tool

Counterbores - Flat Bottom, 0.4687" (15/32)

Zoro # G7162105
Mfr # 23430
product price:  $125.99
/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:  $326.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1575", Overall Length: 3" 2554M
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.1575", Overall Length: 3"

Zoro # G7164808
Mfr # 2554M
product price:  $61.15
/ea
Counterbores (929 items) - Page 5
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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

Port ToolsJobber Length Drill BitsCountersinksHole SawsSpiral Point 2-Flute Taps
Square End MillsHammer Drill BitsExtra Long Drill BitsRound DiesSpiral Flute 3-Flute Taps
cobalt 1/2cleveland counterbore6-piece damask jacquard/solid1-1/4 in counterbore5/16 counterbore
5/16 cobalt50 chain link#50 master link5/8 counterbore1/4 counterbore

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