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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

Porting Tools & Counterbores (993 items) - Page 5

Harvey Tool 0.2187 in. 7/32 Cutter dia x 0.75in. 3/4 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes 731614
Harvey Tool

0.2187 in. 7/32 Cutter dia x 0.75in. 3/4 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes

Zoro # G511325170
Mfr # 731614
product price: 
$70.69
/ea
Harvey Tool Counterbores - Flat Bottom 23330
Harvey Tool

Counterbores - Flat Bottom

Zoro # G301019968
Mfr # 23330
product price: 
$51.59
/ea
Drill America No 4 .111mm Machine Screw Solid Counterbore DEWCBRSOL4
Drill America

No 4 .111mm Machine Screw Solid Counterbore

Zoro # G1746835
Mfr # DEWCBRSOL4
product price: 
$9.29
/ea
Harvey Tool 1/8 in. Cutter dia. x 1/2 in. Flute Length Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated 731608-C3
Harvey Tool

1/8 in. Cutter dia. x 1/2 in. Flute Length Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated

Zoro # G911325152
Mfr # 731608-C3
product price: 
$63.19
/ea
Harvey Tool Counterbores - Flat Bottom 23340-C3
Harvey Tool

Counterbores - Flat Bottom

Zoro # G701019278
Mfr # 23340-C3
product price: 
$60.49
/ea
Harvey Tool 0.2900'' Cutter DIA x 0.8750'', 7/8 Flute Length - 4 FL - AlTiN Coated 23689-C3
Harvey Tool

0.2900'' Cutter DIA x 0.8750'', 7/8 Flute Length - 4 FL - AlTiN Coated

Zoro # G713082161
Mfr # 23689-C3
product price: 
$94.15
/ea
Drill America 3/8" HSS Solid Counterbore DEWCBRSOL3/8
Drill America

3/8" HSS Solid Counterbore

Zoro # G1739500
Mfr # DEWCBRSOL3/8
product price: 
$24.15
/ea
Drill America No 2 .085mm Machine Screw Solid Counterbore DEWCBRSOL2
Drill America

No 2 .085mm Machine Screw Solid Counterbore

Zoro # G1744699
Mfr # DEWCBRSOL2
product price: 
$9.15
/ea
Harvey Tool Counterbores - Flat Bottom, 0.3750" (3/8), Finish - Machining: Uncoated 23424
Harvey Tool

Counterbores - Flat Bottom, 0.3750" (3/8), Finish - Machining: Uncoated

Zoro # G7150920
Mfr # 23424
product price: 
$99.39
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 8X4.3 mm 156020 8X4,3
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 8X4.3 mm

Zoro # G014389464
Mfr # 156020 8X4,3
product price: 
$19.65
/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: 
$122.99
/ea
Garant Mini Counterbore for Through Holes, 180 Deg, Uncoated, 11.5X6.4 mm 155600 11,5X6,4
Garant

Mini Counterbore for Through Holes, 180 Deg, Uncoated, 11.5X6.4 mm

Zoro # G814389848
Mfr # 155600 11,5X6,4
product price: 
$40.39
/ea
Garant Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 15X6.8 mm 156220 15X6,8
Garant

Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 15X6.8 mm

Zoro # G614375508
Mfr # 156220 15X6,8
product price: 
$37.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2031" (13/64), Overall Length: 4" 25513-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.2031" (13/64), Overall Length: 4"

Zoro # G7262607
Mfr # 25513-C3
product price: 
$114.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.2031" (13/64) 23413-C3
Harvey Tool

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

Zoro # G7153276
Mfr # 23413-C3
product price: 
$78.59
/ea
Keo Counterbore, Close Fit, Size 5/16, Cobalt 902-000-019
Keo

Counterbore, Close Fit, Size 5/16, Cobalt

Zoro # G2520061
Mfr # 902-000-019
product price: 
$71.79
/ea
Cleveland Port Tool, 2.813" L, 0.250" dia., Bright C46894
Cleveland

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

Zoro # G4777217
Mfr # C46894
product price: 
$120.99
/ea
Keo No 6 through 1/2" +1/32 Oversize Kounterbore Set 902-000-042
Keo

No 6 through 1/2" +1/32 Oversize Kounterbore Set

Zoro # G2600656
Mfr # 902-000-042
product price: 
$577.99
/ea
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: 
$81.85
/ea
Scientific Cutting Tools PortTool, 1-5/16"-12, 2-1/4in, Straight MS16142-16S
Scientific Cutting Tools

PortTool, 1-5/16"-12, 2-1/4in, Straight

Zoro # G7937352
Mfr # MS16142-16S
product price: 
$298.99
/ea
Keo Counterbore, 1/64 Clearance, Size 1/4, Co 902-000-017
Keo

Counterbore, 1/64 Clearance, Size 1/4, Co

Zoro # G1279327
Mfr # 902-000-017
product price: 
$74.39
/ea
Cleveland Port Tool, 6.375" L, 0.750" dia., Bright C46447
Cleveland

Port Tool, 6.375" L, 0.750" dia., Bright

Zoro # G4797033
Mfr # C46447
product price: 
$261.99
/ea
Keo Counterbore, 1/32 Clearance, Size 1/2, Co 902-000-030
Keo

Counterbore, 1/32 Clearance, Size 1/2, Co

Zoro # G1152356
Mfr # 902-000-030
product price: 
$120.99
/ea
Cleveland Counterbore, 6.500" L, 0.500" dia., Bright C91714
Cleveland

Counterbore, 6.500" L, 0.500" dia., Bright

Zoro # G4854768
Mfr # C91714
product price: 
$184.99
/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: 
$194.99
/ea
Cleveland Port Tool, 4.313" L, 0.500" dia., Bright C46433
Cleveland

Port Tool, 4.313" L, 0.500" dia., Bright

Zoro # G4857452
Mfr # C46433
product price: 
$169.99
/ea
Cleveland Counterbore, 3.000" L, 0.219" dia., Bright C91695
Cleveland

Counterbore, 3.000" L, 0.219" dia., Bright

Zoro # G4834258
Mfr # C91695
product price: 
$109.99
/ea
Cleveland Counterbore, 3.500" L, 0.313" dia., Bright C91700
Cleveland

Counterbore, 3.500" L, 0.313" dia., Bright

Zoro # G4832760
Mfr # C91700
product price: 
$145.99
/ea
Cleveland Port Tool, 3.813" L, 0.296" dia., Bright C46425
Cleveland

Port Tool, 3.813" L, 0.296" dia., Bright

Zoro # G4868521
Mfr # C46425
product price: 
$145.99
/ea
Keo No 6 through 1/2" +1/64 Oversize Kounterbore Set 902-000-041
Keo

No 6 through 1/2" +1/64 Oversize Kounterbore Set

Zoro # G3326023
Mfr # 902-000-041
product price: 
$556.99
/ea
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, 4.063" L, 0.312" dia., Bright C46427
Cleveland

Port Tool, 4.063" L, 0.312" dia., Bright

Zoro # G4854549
Mfr # C46427
product price: 
$139.99
/ea
Keo Counterbore, 1/32 Clearance, Size 5/16, Co 902-000-021
Keo

Counterbore, 1/32 Clearance, Size 5/16, Co

Zoro # G2623661
Mfr # 902-000-021
product price: 
$81.85
/ea
Keo Counterbore, Close Fit, Size No 10, Cobalt 902-000-013
Keo

Counterbore, Close Fit, Size No 10, Cobalt

Zoro # G1865455
Mfr # 902-000-013
product price: 
$78.59
/ea
Cleveland Pilot for Counterbores, 3/32 in, 3/32 in C46523
Cleveland

Pilot for Counterbores, 3/32 in, 3/32 in

Zoro # G4800210
Mfr # C46523
product price: 
$32.39
/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
Porting Tools & Counterbores (993 items) - Page 5
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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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