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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

Drill America No 8 .163mm Machine Screw Solid Counterbore DEWCBRSOL8
Drill America

No 8 .163mm Machine Screw Solid Counterbore

Zoro # G1739695
Mfr # DEWCBRSOL8
product price: 
$13.29
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.4375" (7/16) 25528
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.4375" (7/16)

Zoro # G7262756
Mfr # 25528
product price: 
$170.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.3750" (3/8), Number of Flutes: 4 25524
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.3750" (3/8), Number of Flutes: 4

Zoro # G7260297
Mfr # 25524
product price: 
$144.99
/ea
Drill America 5/8" X 5/16" Pilots for Counterbore DEWPIL5/8X5/16
Drill America

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

Zoro # G1745496
Mfr # DEWPIL5/8X5/16
product price: 
$12.75
/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, Reamer, 9/16-18 UNJF MS33649-6R
Scientific Cutting Tools

Port Tool, MS33649, Reamer, 9/16-18 UNJF

Zoro # G7834565
Mfr # MS33649-6R
product price: 
$248.99
/ea
Scientific Cutting Tools Port Tool, MS33649, Reamer, 3/8-24 UNJF MS33649-3R
Scientific Cutting Tools

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

Zoro # G8163811
Mfr # MS33649-3R
product price: 
$194.99
/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: 
$230.99
/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: 
$223.99
/ea
Scientific Cutting Tools Port Tool, MS16142, Reamer, 3/4-16 UNF MS16142-8R
Scientific Cutting Tools

Port Tool, MS16142, Reamer, 3/4-16 UNF

Zoro # G7807396
Mfr # MS16142-8R
product price: 
$289.99
/ea
Keo Counterbore, 1/32 Clearance, Size No 6, Co 902-000-009
Keo

Counterbore, 1/32 Clearance, Size No 6, Co

Zoro # G1198321
Mfr # 902-000-009
product price: 
$66.15
/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: 
$199.99
/ea
Scientific Cutting Tools Port Tool, MS16142, Reamer, 3/8-24 UNF MS16142-3R
Scientific Cutting Tools

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

Zoro # G8362462
Mfr # MS16142-3R
product price: 
$215.99
/ea
Keo Counterbore, 1/64 Clearance, Size 5/8, Co 902-000-032
Keo

Counterbore, 1/64 Clearance, Size 5/8, Co

Zoro # G3372582
Mfr # 902-000-032
product price: 
$142.99
/ea
Keo Counterbore, 1/32 Clearance, Size 5/8, Co 902-000-033
Keo

Counterbore, 1/32 Clearance, Size 5/8, Co

Zoro # G1975653
Mfr # 902-000-033
product price: 
$177.99
/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: 
$299.99
/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: 
$197.99
/ea
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: 
$347.99
/ea
Scientific Cutting Tools Port Tool, MS16142, Solid, 5/16-24 UNF MS16142-2S
Scientific Cutting Tools

Port Tool, MS16142, Solid, 5/16-24 UNF

Zoro # G7922397
Mfr # MS16142-2S
product price: 
$185.99
/ea
Super Tool Counterbore, 15/16" D, Carbide Tipped 56412
Super Tool

Counterbore, 15/16" D, Carbide Tipped

Zoro # G0329959
Mfr # 56412
product price: 
$158.99
/ea
Super Tool Counterbore, 1-1/8" D, Carbide Tipped 56415
Super Tool

Counterbore, 1-1/8" D, Carbide Tipped

Zoro # G0329940
Mfr # 56415
product price: 
$144.99
/ea
Super Tool Counterbore, 1-11/16" D, Carbide Tipped 56429
Super Tool

Counterbore, 1-11/16" D, Carbide Tipped

Zoro # G0329931
Mfr # 56429
product price: 
$333.99
/ea
Super Tool Counterbore, 5/8" D, Carbide Tipped 56407
Super Tool

Counterbore, 5/8" D, Carbide Tipped

Zoro # G0330010
Mfr # 56407
product price: 
$112.99
/ea
Super Tool Counterbore, 15/16" D, Carbide Tipped 59812
Super Tool

Counterbore, 15/16" D, Carbide Tipped

Zoro # G0330220
Mfr # 59812
product price: 
$153.99
/ea
Hhip No 10 X 13/64" High Speed Steel 3 Flute Solid Pilot Counterbore 2007-0010
Hhip

No 10 X 13/64" High Speed Steel 3 Flute Solid Pilot Counterbore

Zoro # G2467947
Mfr # 2007-0010
product price: 
$13.65
/ea
Link Ua7-16MM Metric Shcs HSS Counterbore 72-L2-518
Link

Ua7-16MM Metric Shcs HSS Counterbore

Zoro # G7645884
Mfr # 72-L2-518
product price: 
$58.99
/ea
Super Tool Counterbore, 1-1/4" D, Carbide Tipped 56417
Super Tool

Counterbore, 1-1/4" D, Carbide Tipped

Zoro # G0330108
Mfr # 56417
product price: 
$163.99
/ea
Super Tool Reduced Shank Counterbore, 1-3/4" D 52256
Super Tool

Reduced Shank Counterbore, 1-3/4" D

Zoro # G0331569
Mfr # 52256
product price: 
$233.99
/ea
Super Tool Counterbore, 1-15/16" D, Carbide Tipped 56427
Super Tool

Counterbore, 1-15/16" D, Carbide Tipped

Zoro # G0330038
Mfr # 56427
product price: 
$445.99
/ea
Super Tool Counterbore, 3/4" D, Carbide Tipped 56409
Super Tool

Counterbore, 3/4" D, Carbide Tipped

Zoro # G0330080
Mfr # 56409
product price: 
$127.99
/ea
Link Ua5-1/4 English Shcs HSS Counterbore 60-L2-297
Link

Ua5-1/4 English Shcs HSS Counterbore

Zoro # G7644859
Mfr # 60-L2-297
product price: 
$29.29
/ea
Super Tool Reduced Shank Counterbore, 1-1/2" D 52248
Super Tool

Reduced Shank Counterbore, 1-1/2" D

Zoro # G0331578
Mfr # 52248
product price: 
$215.99
/ea
Hhip No 6 X .150" High Speed Steel 3 Flute Solid Pilot Counterbore 2007-0006
Hhip

No 6 X .150" High Speed Steel 3 Flute Solid Pilot Counterbore

Zoro # G2467983
Mfr # 2007-0006
product price: 
$10.19
/ea
Internal Tool A Nc-469-500 N/C Counterbore 85-4691
Internal Tool

A Nc-469-500 N/C Counterbore

Zoro # G800402407
Mfr # 85-4691
product price: 
$170.99
/ea
Harvey Tool 0.1968 in. Cutter dia. x .75 in. 3/4 Carbide Flat Bottom Counterbore, 4 Flutes, TiB2 Coated 2345M-C8
Harvey Tool

0.1968 in. Cutter dia. x .75 in. 3/4 Carbide Flat Bottom Counterbore, 4 Flutes, TiB2 Coated

Zoro # G311324779
Mfr # 2345M-C8
product price: 
$78.59
/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
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.

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