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
Close icon
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 5

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
Harvey Tool Counterbores - Flat Bottom 23350-C3
Harvey Tool

Counterbores - Flat Bottom

Zoro # G401019455
Mfr # 23350-C3
product price:  $59.59
/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
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:  $241.99
/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
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 5/16" HSS Solid Counterbore DEWCBRSOL5/16
Drill America

5/16" HSS Solid Counterbore

Zoro # G1741174
Mfr # DEWCBRSOL5/16
product price:  $19.55
/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
Harvey Tool Counterbores - Flat Bottom, 0.3281" (21/64) 23421
Harvey Tool

Counterbores - Flat Bottom, 0.3281" (21/64)

Zoro # G7148604
Mfr # 23421
product price:  $94.39
/ea
Keo Counterbore, 1/32 Clearance, Size 3/4, Co 902-000-035
Keo

Counterbore, 1/32 Clearance, Size 3/4, Co

Zoro # G3346673
Mfr # 902-000-035
product price:  $244.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.3125" (5/16) 23420-C3
Harvey Tool

Counterbores - Flat Bottom, 0.3125" (5/16)

Zoro # G7155096
Mfr # 23420-C3
product price:  $95.69
/ea
Harvey Tool Counterbores - Flat Bottom, 0.3437" (11/32) 23422-C3
Harvey Tool

Counterbores - Flat Bottom, 0.3437" (11/32)

Zoro # G7157135
Mfr # 23422-C3
product price:  $115.99
/ea
Scientific Cutting Tools Port Tool, MS16142, Solid, 7/16-20 UNF MS16142-4S
Scientific Cutting Tools

Port Tool, MS16142, Solid, 7/16-20 UNF

Zoro # G8129712
Mfr # MS16142-4S
product price:  $195.99
/ea
Scientific Cutting Tools Port Tool, 1-7/8"-12, 2-1/4 in, Straight MS16142-24R
Scientific Cutting Tools

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

Zoro # G7885936
Mfr # MS16142-24R
product price:  $508.99
/ea
Scientific Cutting Tools Port Tool, MS33649, Solid, 7/8-14 UNJF MS33649-10S
Scientific Cutting Tools

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

Zoro # G8321677
Mfr # MS33649-10S
product price:  $264.99
/ea
Scientific Cutting Tools Port Tool, MS16142, Solid, 1/2-20 UNF SAEJ1926-05S
Scientific Cutting Tools

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

Zoro # G8276685
Mfr # SAEJ1926-05S
product price:  $241.99
/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, 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
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, MS33649, Reamer, 5/16-24 UNJF MS33649-2R
Scientific Cutting Tools

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

Zoro # G8208864
Mfr # MS33649-2R
product price:  $182.99
/ea
Scientific Cutting Tools Port Tool, 2-1/2"-12, 2-1/2 in, Straight MS16142-32R
Scientific Cutting Tools

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

Zoro # G8077185
Mfr # MS16142-32R
product price:  $539.99
/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, Solid, 7/16-20 UNJF MS33649-4S
Scientific Cutting Tools

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

Zoro # G7850857
Mfr # MS33649-4S
product price:  $204.99
/ea
Scientific Cutting Tools Port Tool, 2-1/2"-12, 2-1/2 in, Straight MS16142-32S
Scientific Cutting Tools

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

Zoro # G8167844
Mfr # MS16142-32S
product price:  $499.99
/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
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, 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 5 .141 Continuous Pilot Capscrew Counterbore DEWCSCBR5
Drill America

No 5 .141 Continuous Pilot Capscrew Counterbore

Zoro # G1739640
Mfr # DEWCSCBR5
product price:  $25.15
/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
Keo Metric Counterbore Set DIN373 - Before Thread 902-000-067
Keo

Metric Counterbore Set DIN373 - Before Thread

Zoro # G8925454
Mfr # 902-000-067
product price:  $457.99
/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:  $257.99
/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:  $226.99
/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:  $257.99
/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:  $219.99
/ea
Scientific Cutting Tools Port Tool, RPT, Reamer, 5/16-24 UNJF RPT-4
Scientific Cutting Tools

Port Tool, RPT, Reamer, 5/16-24 UNJF

Zoro # G8154501
Mfr # RPT-4
product price:  $251.99
/ea
Porting Tools & Counterbores (993 items) - Page 5
  • First
  • Previous
  • 5
    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 & CuttersEnd MillsWrenches
Precision Measuring ToolsMeasuring and Layout ToolsKnives, Cutters & SnipsSockets & RatchetsPower Saw Blades
counter bore pilotmetric counterbore set5/8 counterborepilot counterboreinterchangeable pilot counterbore
high speed steelscientific cutting toolsmetric shcs1-1/4 in counterboremetric counterbore

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