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  1. Home
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  5. Cutting Tools
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  7. Porting Tools & Counterbores

Porting Tools & Counterbores (993 items) - Page 8

Cleveland Port Tool, 2.813" L, 0.250" dia., Bright C46898
Cleveland

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

Zoro # G4821113
Mfr # C46898
product price: 
$141.99
/ea
Cleveland Port Tool, 2.813" L, 0.250" dia., Bright C46902
Cleveland

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

Zoro # G4832368
Mfr # C46902
product price: 
$152.99
/ea
Scientific Cutting Tools Port Tool, MS33649, Reamer, 7/8-14 UNJF MS33649-10R
Scientific Cutting Tools

Port Tool, MS33649, Reamer, 7/8-14 UNJF

Zoro # G8281987
Mfr # MS33649-10R
product price: 
$301.99
/ea
Scientific Cutting Tools Port Tool, MS33649, Solid, 3/8-24 UNJF MS33649-3S
Scientific Cutting Tools

Port Tool, MS33649, Solid, 3/8-24 UNJF

Zoro # G8216835
Mfr # MS33649-3S
product price: 
$227.99
/ea
Keo Counterbore, Close Fit, Size 3/8, Cobalt 902-000-022
Keo

Counterbore, Close Fit, Size 3/8, Cobalt

Zoro # G2453586
Mfr # 902-000-022
product price: 
$91.89
/ea
Scientific Cutting Tools Port Tool, MS33649, Solid, 5/16-24 UNJF MS33649-2S
Scientific Cutting Tools

Port Tool, MS33649, Solid, 5/16-24 UNJF

Zoro # G8099305
Mfr # MS33649-2S
product price: 
$227.99
/ea
Cleveland Counterbore, 6.000" L, 0.438" dia., Bright C92707
Cleveland

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

Zoro # G4791409
Mfr # C92707
product price: 
$159.99
/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
Harvey Tool Counterbores - Flat Bottom, 0.6250" (5/8) 23440
Harvey Tool

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

Zoro # G7158964
Mfr # 23440
product price: 
$252.99
/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
Keo Counterbore, Metric, 71 mm 902-000-201
Keo

Counterbore, Metric, 71 mm

Zoro # G121727661
Mfr # 902-000-201
product price: 
$52.19
/ea
Keo Counterbore, Metric, 80 mm 902-000-231
Keo

Counterbore, Metric, 80 mm

Zoro # G321725443
Mfr # 902-000-231
product price: 
$72.89
/ea
Keo Counterbore, Metric, 71 mm 902-000-198
Keo

Counterbore, Metric, 71 mm

Zoro # G721725548
Mfr # 902-000-198
product price: 
$53.79
/ea
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, 0.0781" (5/64) 23378
Harvey Tool

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

Zoro # G7154868
Mfr # 23378
product price: 
$51.29
/ea
Harvey Tool Counterbores - Flat Bottom, 0.2969" (19/64) 23419
Harvey Tool

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

Zoro # G7154448
Mfr # 23419
product price: 
$86.15
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 15X8.4 mm 156020 15X8,4
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 15X8.4 mm

Zoro # G914389663
Mfr # 156020 15X8,4
product price: 
$38.39
/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, Metric, 80 mm 902-000-225
Keo

Counterbore, Metric, 80 mm

Zoro # G321727430
Mfr # 902-000-225
product price: 
$72.89
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.0937" (3/32) 25493-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.0937" (3/32)

Zoro # G7254618
Mfr # 25493-C3
product price: 
$71.89
/ea
Keo Counterbore, Metric, 100 mm 902-000-264
Keo

Counterbore, Metric, 100 mm

Zoro # G921727458
Mfr # 902-000-264
product price: 
$112.99
/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: 
$59.99
/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
Harvey Tool Counterbores - Flat Bottom, 0.1575" 2344M-C3
Harvey Tool

Counterbores - Flat Bottom, 0.1575"

Zoro # G7242928
Mfr # 2344M-C3
product price: 
$58.29
/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
Drill America No 3 .098mm Machine Screw Solid Counterbore DEWCBRSOL3
Drill America

No 3 .098mm Machine Screw Solid Counterbore

Zoro # G1739756
Mfr # DEWCBRSOL3
product price: 
$10.59
/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: 
$158.99
/ea
Keo Counterbore, Decimal Inch, 7 in 902-000-186
Keo

Counterbore, Decimal Inch, 7 in

Zoro # G421727217
Mfr # 902-000-186
product price: 
$518.99
/ea
Drill America No 10 13/64" Continuous Pilot Capscrew Counterbore DEWCSCBR10
Drill America

No 10 13/64" Continuous Pilot Capscrew Counterbore

Zoro # G1741950
Mfr # DEWCSCBR10
product price: 
$26.35
/ea
Harvey Tool 0.3320'' Cutter DIA x 1.0000'', 1 Flute Length - 4 FL 23731
Harvey Tool

0.3320'' Cutter DIA x 1.0000'', 1 Flute Length - 4 FL

Zoro # G113082129
Mfr # 23731
product price: 
$97.89
/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
Keo Counterbore, Decimal Inch, 5 in 902-000-141
Keo

Counterbore, Decimal Inch, 5 in

Zoro # G521725823
Mfr # 902-000-141
product price: 
$93.39
/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: 
$25.55
/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: 
$97.15
/ea
Harvey Tool Counterbores - Flat Bottom, 0.4062" (13/32) 23426
Harvey Tool

Counterbores - Flat Bottom, 0.4062" (13/32)

Zoro # G7156730
Mfr # 23426
product price: 
$117.99
/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: 
$206.99
/ea
Porting Tools & Counterbores (993 items) - Page 8
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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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