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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 4

Scientific Cutting Tools PortTool, 1-5/16"-12, 2-1/4in, Straight MS33649-16R
Scientific Cutting Tools

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

Zoro # G7963611
Mfr # MS33649-16R
product price: 
$406.99
/ea
Scientific Cutting Tools Port Tool, MS16142, Solid, 3/8-24 UNF MS16142-3S
Scientific Cutting Tools

Port Tool, MS16142, Solid, 3/8-24 UNF

Zoro # G8237117
Mfr # MS16142-3S
product price: 
$233.99
/ea
Scientific Cutting Tools PortTool, 1-3/16"-12, 2-1/4in, Straight MS16142-14R
Scientific Cutting Tools

PortTool, 1-3/16"-12, 2-1/4in, Straight

Zoro # G8099795
Mfr # MS16142-14R
product price: 
$350.99
/ea
Scientific Cutting Tools Port Tool, MS33649, Solid, 1/2-20 UNJF MS33649-5S
Scientific Cutting Tools

Port Tool, MS33649, Solid, 1/2-20 UNJF

Zoro # G8037906
Mfr # MS33649-5S
product price: 
$231.99
/ea
Garant Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 8X3.3 mm 156220 8X3,3
Garant

Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 8X3.3 mm

Zoro # G014376389
Mfr # 156220 8X3,3
product price: 
$24.29
/ea
Garant Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 6.5X2.5 mm 156220 6,5X2,5
Garant

Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 6.5X2.5 mm

Zoro # G714375965
Mfr # 156220 6,5X2,5
product price: 
$26.99
/ea
Keo Counterbore Set, Metric, 6 pcs., 3F, Medium 902-000-069
Keo

Counterbore Set, Metric, 6 pcs., 3F, Medium

Zoro # G8925472
Mfr # 902-000-069
product price: 
$426.99
/ea
Drill America 1/4" HSS Solid Counterbore DEWCBRSOL1/4
Drill America

1/4" HSS Solid Counterbore

Zoro # G1744839
Mfr # DEWCBRSOL1/4
product price: 
$24.15
/ea
Drill America 5/16" HSS Solid Counterbore DEWCBRSOL5/16
Drill America

5/16" HSS Solid Counterbore

Zoro # G1741174
Mfr # DEWCBRSOL5/16
product price: 
$19.55
/ea
Scientific Cutting Tools Port Tool, MS33649, Reamer, 7/16-20 UNJF MS33649-4R
Scientific Cutting Tools

Port Tool, MS33649, Reamer, 7/16-20 UNJF

Zoro # G8406955
Mfr # MS33649-4R
product price: 
$261.99
/ea
Drill America 3/4" 13/16" Continuous Pilot Capscrew Counterbore DEWCSCBR3/4
Drill America

3/4" 13/16" Continuous Pilot Capscrew Counterbore

Zoro # G1745295
Mfr # DEWCSCBR3/4
product price: 
$81.79
/ea
Scientific Cutting Tools Port Tool, RPT, Reamer, 9/16-18 UNJF RPT-8
Scientific Cutting Tools

Port Tool, RPT, Reamer, 9/16-18 UNJF

Zoro # G8147063
Mfr # RPT-8
product price: 
$282.99
/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: 
$349.99
/ea
Scientific Cutting Tools Port Tool, 3/4"-16, 2-1/8 in, Straight MS16142-8S
Scientific Cutting Tools

Port Tool, 3/4"-16, 2-1/8 in, Straight

Zoro # G8209966
Mfr # MS16142-8S
product price: 
$269.99
/ea
Harvey Tool 0.0394 in. 1 mm Cutter dia. x 0.1560 in. 5/32 Carbide Flat Bottom Counterbore, 4 Flutes 2331M-C8
Harvey Tool

0.0394 in. 1 mm Cutter dia. x 0.1560 in. 5/32 Carbide Flat Bottom Counterbore, 4 Flutes

Zoro # G311326391
Mfr # 2331M-C8
product price: 
$58.79
/ea
Drill America 3/4" X 1/2" Pilots for Counterbore DEWPIL3/4X1/2
Drill America

3/4" X 1/2" Pilots for Counterbore

Zoro # G1741576
Mfr # DEWPIL3/4X1/2
product price: 
$11.45
/ea
Garant Counterbore with Interchangeable Pilot Pins, 36 mm 156520 36
Garant

Counterbore with Interchangeable Pilot Pins, 36 mm

Zoro # G614389840
Mfr # 156520 36
product price: 
$224.99
/ea
Harvey Tool 0.1875 in. 3/16 Cutter dia x 0.75in. 3/4 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes 731612
Harvey Tool

0.1875 in. 3/16 Cutter dia x 0.75in. 3/4 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes

Zoro # G111325082
Mfr # 731612
product price: 
$52.39
/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
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 8X4.5 mm 156020 8X4,5
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 8X4.5 mm

Zoro # G114389470
Mfr # 156020 8X4,5
product price: 
$19.79
/ea
Drill America 1/2" HSS Solid Counterbore DEWCBRSOL1/2
Drill America

1/2" HSS Solid Counterbore

Zoro # G1742154
Mfr # DEWCBRSOL1/2
product price: 
$26.15
/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: 
$26.99
/ea
Harvey Tool 1/16 Cutter dia. x 1/4 in. Flute Length Carbide Flat Bottom Counterbore, 4 Flutes, TiB2 Coated 23362-C8
Harvey Tool

1/16 Cutter dia. x 1/4 in. Flute Length Carbide Flat Bottom Counterbore, 4 Flutes, TiB2 Coated

Zoro # G711326380
Mfr # 23362-C8
product price: 
$58.79
/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
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: 
$41.95
/ea
Harvey Tool 0.4220'', 27/64 Cutter DIA x 1.0000'', 1 Flute Length - 4 FL - AlTiN Coated 23427-C3
Harvey Tool

0.4220'', 27/64 Cutter DIA x 1.0000'', 1 Flute Length - 4 FL - AlTiN Coated

Zoro # G413081587
Mfr # 23427-C3
product price: 
$138.99
/ea
Harvey Tool Counterbores - Flat Bottom 23350
Harvey Tool

Counterbores - Flat Bottom

Zoro # G201019020
Mfr # 23350
product price: 
$51.25
/ea
Garant Mini Counterbore for Through Holes, 180 Deg, Uncoated, 2.8X1.5 mm 155700 2,8X1,5
Garant

Mini Counterbore for Through Holes, 180 Deg, Uncoated, 2.8X1.5 mm

Zoro # G514389629
Mfr # 155700 2,8X1,5
product price: 
$32.15
/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
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 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
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2362" 2556M
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.2362"

Zoro # G7164799
Mfr # 2556M
product price: 
$106.99
/ea
Harvey Tool 1/4 in. Cutter dia. x7/8 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated 731616-C3
Harvey Tool

1/4 in. Cutter dia. x7/8 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated

Zoro # G111325242
Mfr # 731616-C3
product price: 
$79.89
/ea
Garant Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 10X4.2 mm 156220 10X4,2
Garant

Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 10X4.2 mm

Zoro # G514375578
Mfr # 156220 10X4,2
product price: 
$23.65
/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
Porting Tools & Counterbores (993 items) - Page 4
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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.

Related Categories

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counter bore pilotmetric counterbore set5/8 counterborepilot counterboreinterchangeable pilot counterbore
high speed steelscientific cutting toolsmetric shcs1-1/4 in counterboremetric counterbore

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