Featured Categories

  • Tools & Machining
  • Shipping, Packaging & Office Supplies
  • Plumbing
  • Safety

Shop Categories

  • Abrasives & Polishers
  • Adhesives & Tapes
  • Electrical Supplies
  • Electronics
  • Fasteners
  • Food Service & Restaurant Supplies
  • Furniture, Linens & Decor
  • Grounds & Outdoor
  • Hardware & Building Materials
  • Heating & Cooling
  • Janitorial & Cleaning Supplies
  • Lab Equipment & Supplies
  • Lighting
  • Material Handling
  • Medical & Personal Care
  • Paint, Coatings & Supplies
  • Plumbing
  • Power Transmission
  • Pumps
  • Raw Materials
  • Safety
  • Shipping, Packaging & Office Supplies
  • Storage & Workspace
  • Test Instruments & Gauges
  • Tools & Machining
  • Vehicle Maintenance
  • Welding, Soldering & Brazing
  • About Us
  • Deals
  • Contact Us

Added to Cart

Skip to Main Content Accessibility Statement
FREE SHIPPING on orders over $50 after you . Restrictions Apply
Zoro Homepage
Clipboard Icon Clipboard Icon Quick Order
User Headset Icon User Headset Icon Support
0
0
Cart

  • Low prices on everyday needs. Shop Zoro Select
  • Don't miss these limited time offers. Shop All Deals
  • Get 30 days to pay with Net 30. Apply Now
  1. Home
  2. /
  3. Tools & Machining
  4. /
  5. Cutting Tools
  6. /
  7. Porting Tools & Counterbores

Porting Tools & Counterbores (993 items) - Page 21

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, MS33649, Reamer, 1/4-28 UNJF MS33649-1R
Scientific Cutting Tools

Port Tool, MS33649, Reamer, 1/4-28 UNJF

Zoro # G8170136
Mfr # MS33649-1R
product price: 
$307.99
/ea
Scientific Cutting Tools PortTool, 1-3/16"-12, 2-1/4in, Straight MS33649-14S
Scientific Cutting Tools

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

Zoro # G8128251
Mfr # MS33649-14S
product price: 
$315.99
/ea
Scientific Cutting Tools Port Tool, MS33649, Solid, 3/4-16 UNJF MS33649-8S
Scientific Cutting Tools

Port Tool, MS33649, Solid, 3/4-16 UNJF

Zoro # G8174135
Mfr # MS33649-8S
product price: 
$256.99
/ea
Scientific Cutting Tools Port Tool, RPT, Reamer, 7/16-20 UNJF RPT-6
Scientific Cutting Tools

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

Zoro # G7999293
Mfr # RPT-6
product price: 
$301.99
/ea
Scientific Cutting Tools Port Tool, RPT, Reamer, 13/16-20 UNJEF RPT-12
Scientific Cutting Tools

Port Tool, RPT, Reamer, 13/16-20 UNJEF

Zoro # G7965054
Mfr # RPT-12
product price: 
$287.99
/ea
Scientific Cutting Tools PortTool, 1-5/16"-12, 2-1/4in, Straight MS33649-16S
Scientific Cutting Tools

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

Zoro # G8153957
Mfr # MS33649-16S
product price: 
$348.99
/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, MS16142, Reamer, 5/16-24 UNF MS16142-2R
Scientific Cutting Tools

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

Zoro # G7922056
Mfr # MS16142-2R
product price: 
$230.99
/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: 
$151.99
/ea
Keo Counterbore, 1/32 Clearance, Size No 5, Co 902-000-006
Keo

Counterbore, 1/32 Clearance, Size No 5, Co

Zoro # G0495774
Mfr # 902-000-006
product price: 
$57.65
/ea
Keo Counterbore, 1/32 Clearance, Size 7/16, Co 902-000-027
Keo

Counterbore, 1/32 Clearance, Size 7/16, Co

Zoro # G3237306
Mfr # 902-000-027
product price: 
$97.55
/ea
Keo Counterbore, 1/64 Clearance, Size 7/16, Co 902-000-026
Keo

Counterbore, 1/64 Clearance, Size 7/16, Co

Zoro # G2216444
Mfr # 902-000-026
product price: 
$98.15
/ea
Scientific Cutting Tools Port Tool, RPT, Reamer, 3/8-24 UNJF RPT-5
Scientific Cutting Tools

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

Zoro # G8145006
Mfr # RPT-5
product price: 
$282.99
/ea
Keo Counterbore, 1/32 Clearance, Size No 8, Co 902-000-012
Keo

Counterbore, 1/32 Clearance, Size No 8, Co

Zoro # G2999105
Mfr # 902-000-012
product price: 
$65.25
/ea
Scientific Cutting Tools PortTool, 1-3/16"-12, 2-1/4in, Straight MS16142-14S
Scientific Cutting Tools

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

Zoro # G8051522
Mfr # MS16142-14S
product price: 
$308.99
/ea
Scientific Cutting Tools PortTool, 1-1/16"-12, 2-1/8in, Straight MS33649-12S
Scientific Cutting Tools

PortTool, 1-1/16"-12, 2-1/8in, Straight

Zoro # G7855041
Mfr # MS33649-12S
product price: 
$338.99
/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: 
$54.25
/ea
Scientific Cutting Tools Port Tool, 13/16"-16, 2-1/8 in, Straight MS33649-9S
Scientific Cutting Tools

Port Tool, 13/16"-16, 2-1/8 in, Straight

Zoro # G8212635
Mfr # MS33649-9S
product price: 
$261.99
/ea
Keo Counterbore, Close Fit, Size No 4, Cobalt 902-000-001
Keo

Counterbore, Close Fit, Size No 4, Cobalt

Zoro # G1364081
Mfr # 902-000-001
product price: 
$55.29
/ea
Drill America 7/16" 15/32" Continuous Pilot Capscrew Counterbore DEWCSCBR7/16
Drill America

7/16" 15/32" Continuous Pilot Capscrew Counterbore

Zoro # G1742425
Mfr # DEWCSCBR7/16
product price: 
$37.75
/ea
Scientific Cutting Tools Port Tool, 1-5/8"-12, 2-1/4 in, Straight MS33649-20R
Scientific Cutting Tools

Port Tool, 1-5/8"-12, 2-1/4 in, Straight

Zoro # G8326683
Mfr # MS33649-20R
product price: 
$469.99
/ea
Scientific Cutting Tools Port Tool, MS16142, Reamer, 1/2-20 UNF MS16142-5R
Scientific Cutting Tools

Port Tool, MS16142, Reamer, 1/2-20 UNF

Zoro # G8233766
Mfr # MS16142-5R
product price: 
$259.99
/ea
Scientific Cutting Tools Port Tool, 1-7/8"-12, 2-1/4 in, Straight MS16142-24S
Scientific Cutting Tools

Port Tool, 1-7/8"-12, 2-1/4 in, Straight

Zoro # G8070343
Mfr # MS16142-24S
product price: 
$539.99
/ea
Keo Counterbore, Close Fit, Size 7/16, Cobalt 902-000-025
Keo

Counterbore, Close Fit, Size 7/16, Cobalt

Zoro # G0430981
Mfr # 902-000-025
product price: 
$98.49
/ea
Scientific Cutting Tools Port Tool, RPT, Reamer, 1 5/16-18 UNJF RPT-20
Scientific Cutting Tools

Port Tool, RPT, Reamer, 1 5/16-18 UNJF

Zoro # G8012916
Mfr # RPT-20
product price: 
$435.99
/ea
Scientific Cutting Tools Port Tool, 1-1/2"12, 2-1/4 in, Straight MS33649-18R
Scientific Cutting Tools

Port Tool, 1-1/2"12, 2-1/4 in, Straight

Zoro # G8307257
Mfr # MS33649-18R
product price: 
$415.99
/ea
Scientific Cutting Tools Port Tool, MS33649, Reamer, 13/16-16 UNJ MS33649-9R
Scientific Cutting Tools

Port Tool, MS33649, Reamer, 13/16-16 UNJ

Zoro # G8072136
Mfr # MS33649-9R
product price: 
$307.99
/ea
Keo Counterbore, 1/32 Clearance, Size No 4, Co 902-000-003
Keo

Counterbore, 1/32 Clearance, Size No 4, Co

Zoro # G2246754
Mfr # 902-000-003
product price: 
$54.25
/ea
Keo Counterbore, 1/64 Clearance, Size No 6, Co 902-000-008
Keo

Counterbore, 1/64 Clearance, Size No 6, Co

Zoro # G0394344
Mfr # 902-000-008
product price: 
$63.15
/ea
Keo Counterbore, Close Fit, Size No 8, Cobalt 902-000-010
Keo

Counterbore, Close Fit, Size No 8, Cobalt

Zoro # G2292123
Mfr # 902-000-010
product price: 
$71.65
/ea
Scientific Cutting Tools Port Tool, MS33649, Reamer, 1/2-20 UNJF MS33649-5R
Scientific Cutting Tools

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

Zoro # G7974556
Mfr # MS33649-5R
product price: 
$278.99
/ea
Scientific Cutting Tools PortTool, 1-3/16"-12, 2-1/4in, Straight MS33649-14R
Scientific Cutting Tools

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

Zoro # G7921663
Mfr # MS33649-14R
product price: 
$342.99
/ea
Drill America 3/8" 13/32" Continuous Pilot Capscrew Counterbore DEWCSCBR3/8
Drill America

3/8" 13/32" Continuous Pilot Capscrew Counterbore

Zoro # G1741418
Mfr # DEWCSCBR3/8
product price: 
$30.85
/ea
Scientific Cutting Tools Port Tool, RPT, Reamer, 1 1/8-18 UNJEF RPT-16
Scientific Cutting Tools

Port Tool, RPT, Reamer, 1 1/8-18 UNJEF

Zoro # G7876495
Mfr # RPT-16
product price: 
$318.99
/ea
Porting Tools & Counterbores (993 items) - Page 21
  • First
  • Previous
  • 21
    of 28 pages
  • Next
  • Last
How was your search?

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

Drill BitsTapsHole Saws & CuttersReamersWrenches
Sockets & RatchetsMeasuring and Layout ToolsKnives, Cutters & SnipsPrecision Measuring ToolsScrewdrivers and Nutdrivers
pilot counterboremetric counterboreinterchangeable pilot counterbore5/8 counterborecounter bore pilot
1-1/4 in counterborehigh speed steelcounterbores - flat bottommetric shcscounter bore set

Sign up and save

Take 10% off your next order when you sign up for Zoro emails. Subscribe now to receive your promo code via email.

Follow us

  • Facebook
  • YouTube
  • LinkedIn
  • Instagram
Every part plays a part

Information

  • About Us
  • Accessibility
  • Careers
  • Inclusion
  • Giving Back
  • Resource Hub
  • Returns
  • Shipping

Shopping

  • Brands
  • Collections
  • My Account
  • Payments
  • Deals
  • Sitemap
  • Track My Order

Services

  • Customer Service
  • FAQs
  • Net 30 Terms
  • Reseller Program
  • Sell on Zoro
  • Participate in Research
  • Tax Exemption

Zoro, Inc

Connect

Customer service from real people

  • Phone: (855) 289-9676
  • Contact Us

© 2011-2026 Zoro Tools, Inc. All rights reserved.
  • Terms & Conditions
  • Terms of Access
  • Privacy Policy
Zoro, Inc