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  5. Cutting Tools
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  7. Porting Tools & Counterbores
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Porting Tools & Counterbores (995 items) - Page 17

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
Cleveland Counterbore, 1.437" L, 0.125" dia., Bright C46553
Cleveland

Counterbore, 1.437" L, 0.125" dia., Bright

Zoro # G4803500
Mfr # C46553
product price:  $28.79
/ea
Harvey Tool Counterbores - Flat Bottom, 0.2812" (9/32), Number of Flutes: 4 23418
Harvey Tool

Counterbores - Flat Bottom, 0.2812" (9/32), Number of Flutes: 4

Zoro # G7152460
Mfr # 23418
product price:  $65.59
/ea
Cleveland Port Tool, 2.813" L, 0.250" dia., Bright C46892
Cleveland

Port Tool, 2.813" L, 0.250" dia., Bright

Zoro # G4769578
Mfr # C46892
product price:  $95.99
/ea
Cleveland Pilot for Counterbores, 1/8 in, 1/8 in C46537
Cleveland

Pilot for Counterbores, 1/8 in, 1/8 in

Zoro # G4766942
Mfr # C46537
product price:  $24.15
/ea
Cleveland Port Tool, 3.000" L, 0.234" dia., Bright C46422
Cleveland

Port Tool, 3.000" L, 0.234" dia., Bright

Zoro # G4858432
Mfr # C46422
product price:  $104.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.0469" (3/64), Number of Flutes: 4 25447
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.0469" (3/64), Number of Flutes: 4

Zoro # G7257795
Mfr # 25447
product price:  $47.66
/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:  $141.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.3937" 2550M
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.3937"

Zoro # G7157537
Mfr # 2550M
product price:  $142.99
/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 Pilot for Counterbores, 5/32 in, 5/32 in C46529
Cleveland

Pilot for Counterbores, 5/32 in, 5/32 in

Zoro # G4805433
Mfr # C46529
product price:  $25.89
/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
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:  $65.59
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 6.5X3.2 mm 156020 6,5X3,2
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 6.5X3.2 mm

Zoro # G514389612
Mfr # 156020 6,5X3,2
product price:  $24.55
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 11X6.6 mm 156020 11X6,6
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 11X6.6 mm

Zoro # G814389626
Mfr # 156020 11X6,6
product price:  $23.15
/ea
Keo Counterbore, 1/64 Clearance, Size No 4, Co 902-000-002
Keo

Counterbore, 1/64 Clearance, Size No 4, Co

Zoro # G0903585
Mfr # 902-000-002
product price:  $51.89
/ea
Cleveland Port Tool, 3.813" L, 0.266" dia., Bright C46424
Cleveland

Port Tool, 3.813" L, 0.266" dia., Bright

Zoro # G4789808
Mfr # C46424
product price:  $114.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2362" 2556M-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.2362"

Zoro # G7164817
Mfr # 2556M-C3
product price:  $96.59
/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
Cleveland Counterbore, 6.000" L, 0.438" dia., Bright C91830
Cleveland

Counterbore, 6.000" L, 0.438" dia., Bright

Zoro # G4870201
Mfr # C91830
product price:  $154.99
/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:  $40.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.3594" (23/64), Material - Machining: Carbide 23423
Harvey Tool

Counterbores - Flat Bottom, 0.3594" (23/64), Material - Machining: Carbide

Zoro # G7155139
Mfr # 23423
product price:  $78.45
/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:  $116.99
/ea
Cleveland Counterbore, 1.375" L, 0.156" dia., Bright C46565
Cleveland

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

Zoro # G4848370
Mfr # C46565
product price:  $29.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.5000" (1/2) 25532
Harvey Tool

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

Zoro # G7266089
Mfr # 25532
product price:  $163.99
/ea
Cleveland Counterbore, 1.500" L, 0.094" dia., Bright C46570
Cleveland

Counterbore, 1.500" L, 0.094" dia., Bright

Zoro # G4880132
Mfr # C46570
product price:  $29.99
/ea
Cleveland Counterbore, 1.437" L, 0.250" dia., Bright C46629
Cleveland

Counterbore, 1.437" L, 0.250" dia., Bright

Zoro # G4802030
Mfr # C46629
product price:  $48.39
/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 Port Tool, 3.813" L, 0.312" dia., Bright C46426
Cleveland

Port Tool, 3.813" L, 0.312" dia., Bright

Zoro # G4766933
Mfr # C46426
product price:  $119.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1406" (9/64) 25509
Harvey Tool

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

Zoro # G7242964
Mfr # 25509
product price:  $51.79
/ea
Drill America No 6 .150 Continuous Pilot Capscrew Counterbore DEWCSCBR6
Drill America

No 6 .150 Continuous Pilot Capscrew Counterbore

Zoro # G1742845
Mfr # DEWCSCBR6
product price:  $25.35
/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:  $59.99
/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:  $44.15
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.0394" 2541M
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.0394"

Zoro # G7161807
Mfr # 2541M
product price:  $48.99
/ea
Cleveland Pilot for Counterbores, 1/8 in, 1/8 in C46527
Cleveland

Pilot for Counterbores, 1/8 in, 1/8 in

Zoro # G4814533
Mfr # C46527
product price:  $27.45
/ea
Cleveland Counterbore, 2.187" L, 0.188" dia., Bright C46620
Cleveland

Counterbore, 2.187" L, 0.188" dia., Bright

Zoro # G4866010
Mfr # C46620
product price:  $40.29
/ea
Porting Tools & Counterbores (995 items) - Page 17
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About Porting Tools & Counterbores

Porting Tools & Counterbores are used to improve the flow of air or gas in an engine, turbine, compressor, and more. They are typically used to reduce turbulence in the airflow and increase performance.

Types of Porting Tools & Counterbores

Chainsaw porting tools are commonly used for small engines like lawnmowers, as they can be adjusted easily and quickly. Ported tools are designed for larger engines such as those found in cars and motorcycles. Porting supplies include special cutting tools that allow for precise modifications to be made with minimal effort.

How Porting Tools & Counterbores are Made

Porting tools are usually constructed from hardened steel or aluminum alloy materials that can withstand high temperatures and pressures associated with engine operations. Special compounds may also be applied during the manufacturing process to ensure optimal performance.

Industries that use Porting Tools & Counterbores

Porting Tools & Counterbores can be found in a variety of industries including automotive, aerospace, marine, industrial machinery, and power sports. Professionals such as mechanics, engineers, machinists, technicians often use these tools on the job.

Find the Porting Tools & Counterbores You Need at Zoro

Looking for a specific item? Use our robust search tool to find it by name or keyword, or use our handy filters to narrow down our full assortment. You can also check out our whole selection of Porting Tools & Counterbores along with other tools or equipment to ensure you have all you need to tackle the job, especially if you're taking on a DIY project for the first time.

Plus, when you shop at Zoro, you'll always enjoy competitive prices on tons of great brands you know and trust. We make the shopping experience as fast and seamless as possible with free shipping on orders over $50 for registered users, Net 30 payment terms for qualifying customers, and an unparalleled customer service experience.

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