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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 8

Drill America 5/8" X 7/16" Pilots for Counterbore DEWPIL5/8X7/16
Drill America

5/8" X 7/16" Pilots for Counterbore

Zoro # G1739765
Mfr # DEWPIL5/8X7/16
product price:  $13.29
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.3937" 2550M-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.3937"

Zoro # G7247338
Mfr # 2550M-C3
product price:  $199.99
/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, 3 in 902-000-326
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G621727291
Mfr # 902-000-326
product price:  $65.79
/ea
Keo Counterbore, Decimal Inch, 3 in 902-000-072
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G121727616
Mfr # 902-000-072
product price:  $53.49
/ea
Keo Counterbore, Decimal Inch, 4-1/2 in 902-000-108
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G221726663
Mfr # 902-000-108
product price:  $67.69
/ea
Harvey Tool 5/32 Cutter dia. x 0.6250 in. 5/8 Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated 731610-C3
Harvey Tool

5/32 Cutter dia. x 0.6250 in. 5/8 Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated

Zoro # G411325119
Mfr # 731610-C3
product price:  $61.15
/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
Keo Counterbore, Decimal Inch, 5 in 902-000-307
Keo

Counterbore, Decimal Inch, 5 in

Zoro # G821726605
Mfr # 902-000-307
product price:  $127.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1875" (3/16) 25512-C3
Harvey Tool

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

Zoro # G7260190
Mfr # 25512-C3
product price:  $85.15
/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, Decimal Inch, 6 in 902-000-165
Keo

Counterbore, Decimal Inch, 6 in

Zoro # G321726266
Mfr # 902-000-165
product price:  $177.99
/ea
Harvey Tool 1/2 in. Cutter dia. x 1 in. 1 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes, TiB2 Coated 23432-C8
Harvey Tool

1/2 in. Cutter dia. x 1 in. 1 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes, TiB2 Coated

Zoro # G811324668
Mfr # 23432-C8
product price:  $176.99
/ea
Keo Counterbore, Decimal Inch, 4-1/2 in 902-000-320
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G321725061
Mfr # 902-000-320
product price:  $74.89
/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:  $322.99
/ea
Harvey Tool 0.4375 in. 7/16 Cutter dia x 1.00in. 1 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes 731628
Harvey Tool

0.4375 in. 7/16 Cutter dia x 1.00in. 1 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes

Zoro # G911325404
Mfr # 731628
product price:  $114.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1250" (1/8) 25508-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.1250" (1/8)

Zoro # G7242894
Mfr # 25508-C3
product price:  $71.89
/ea
Drill America 3/8" 13/32" Continuous Pilot Capscrew Counterbore DEWCSCBR3/8
Drill America

3/8" 13/32" Continuous Pilot Capscrew Counterbore

Zoro # G1741418
Mfr # DEWCSCBR3/8
product price:  $34.15
/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 - Long Reach, 0.2812" (9/32) 25518
Harvey Tool

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

Zoro # G7263176
Mfr # 25518
product price:  $117.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.4687" (15/32) 23430-C3
Harvey Tool

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

Zoro # G7159208
Mfr # 23430-C3
product price:  $178.99
/ea
Keo Counterbore, Decimal Inch, 4-1/2 in 902-000-129
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G021726566
Mfr # 902-000-129
product price:  $76.79
/ea
Keo Counterbore, Metric, 100 mm 902-000-246
Keo

Counterbore, Metric, 100 mm

Zoro # G221727196
Mfr # 902-000-246
product price:  $80.19
/ea
Harvey Tool 5/16 Cutter dia. x 1 in. 1 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated 731620-C3
Harvey Tool

5/16 Cutter dia. x 1 in. 1 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated

Zoro # G911325350
Mfr # 731620-C3
product price:  $90.99
/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
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
Harvey Tool Counterbores - Flat Bottom, 0.1562" (5/32) 23410
Harvey Tool

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

Zoro # G7153775
Mfr # 23410
product price:  $49.15
/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:  $282.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0394" 2331M-C3
Harvey Tool

Counterbores - Flat Bottom, 0.0394"

Zoro # G7148586
Mfr # 2331M-C3
product price:  $60.15
/ea
Harvey Tool Counterbores - Flat Bottom, 0.1250" (1/8) 23408-C6
Harvey Tool

Counterbores - Flat Bottom, 0.1250" (1/8)

Zoro # G7154186
Mfr # 23408-C6
product price:  $61.39
/ea
Drill America No 6 .137mm Machine Screw Solid Counterbore DEWCBRSOL6
Drill America

No 6 .137mm Machine Screw Solid Counterbore

Zoro # G1741357
Mfr # DEWCBRSOL6
product price:  $14.49
/ea
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 0.25in. 1/4 Cutter dia x 0.8750 in. 7/8 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes 731616
Harvey Tool

0.25in. 1/4 Cutter dia x 0.8750 in. 7/8 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes

Zoro # G911325251
Mfr # 731616
product price:  $70.69
/ea
Keo Counterbore, Decimal Inch, 5 in 902-000-144
Keo

Counterbore, Decimal Inch, 5 in

Zoro # G821725165
Mfr # 902-000-144
product price:  $109.99
/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, 5 in 902-000-150
Keo

Counterbore, Decimal Inch, 5 in

Zoro # G421725626
Mfr # 902-000-150
product price:  $109.99
/ea
Counterbores (927 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

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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