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 6

Kodiak Cutting Tools 7/8 Counterbore On Size Capscrew Style 5495787
Kodiak Cutting Tools

7/8 Counterbore On Size Capscrew Style

Zoro # G8617965
Mfr # 5495787
product price: 
$197.99
/ea
Kodiak Cutting Tools No. 3/8 Counterbores 1/64 Oversize Capscrew Style 5495886
Kodiak Cutting Tools

No. 3/8 Counterbores 1/64 Oversize Capscrew Style

Zoro # G8614830
Mfr # 5495886
product price: 
$71.35
/ea
Garant Interchangeable Pilot Pin for Counterbore 156520 26-30, 12 mm 156620 8X12
Garant

Interchangeable Pilot Pin for Counterbore 156520 26-30, 12 mm

Zoro # G914389564
Mfr # 156620 8X12
product price: 
$39.75
/ea
Harvey Tool 3/16 Cutter dia. x .75 in. 3/4 Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated 731612-C3
Harvey Tool

3/16 Cutter dia. x .75 in. 3/4 Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated

Zoro # G011325069
Mfr # 731612-C3
product price: 
$61.15
/ea
Link 1/4" HSS Se .280 X .375 Drill .406 Cbore 7/16 Shank 1-3/4 Oal 50-L2-184
Link

1/4" HSS Se .280 X .375 Drill .406 Cbore 7/16 Shank 1-3/4 Oal

Zoro # G7636039
Mfr # 50-L2-184
product price: 
$25.49
/ea
Garant Interchangeable Pilot Pin for Counterbore 156520 26-30, 10.2 mm 156620 8X10,2
Garant

Interchangeable Pilot Pin for Counterbore 156520 26-30, 10.2 mm

Zoro # G614389697
Mfr # 156620 8X10,2
product price: 
$39.75
/ea
Garant Counterbore with Interchangeable Pilot Pins, 15 mm 156520 15
Garant

Counterbore with Interchangeable Pilot Pins, 15 mm

Zoro # G414389903
Mfr # 156520 15
product price: 
$103.99
/ea
Garant Counterbore with Interchangeable Pilot Pins, 18 mm 156520 18
Garant

Counterbore with Interchangeable Pilot Pins, 18 mm

Zoro # G314389881
Mfr # 156520 18
product price: 
$106.99
/ea
Super Tool Counterbore, 2" D, Carbide Tipped 56428
Super Tool

Counterbore, 2" D, Carbide Tipped

Zoro # G0330248
Mfr # 56428
product price: 
$414.99
/ea
Super Tool Counterbore, 21/32" D, Carbide Tipped 5776562
Super Tool

Counterbore, 21/32" D, Carbide Tipped

Zoro # G0330342
Mfr # 5776562
product price: 
$128.99
/ea
Super Tool Reduced Shank Counterbore, 17/32" D 52217
Super Tool

Reduced Shank Counterbore, 17/32" D

Zoro # G0331401
Mfr # 52217
product price: 
$91.15
/ea
Super Tool Counterbore, 21/32" D, Carbide Tipped 5796562
Super Tool

Counterbore, 21/32" D, Carbide Tipped

Zoro # G0330150
Mfr # 5796562
product price: 
$127.99
/ea
Super Tool Reduced Shank Counterbore, 11/32" D 52211
Super Tool

Reduced Shank Counterbore, 11/32" D

Zoro # G0331447
Mfr # 52211
product price: 
$75.59
/ea
Kodiak Cutting Tools No. 10 Counterbores 1/32 Oversize Capscrew Style 5496007
Kodiak Cutting Tools

No. 10 Counterbores 1/32 Oversize Capscrew Style

Zoro # G8622795
Mfr # 5496007
product price: 
$49.65
/ea
Super Tool Counterbore, 13/32" D, Carbide Tipped 5794062
Super Tool

Counterbore, 13/32" D, Carbide Tipped

Zoro # G0330053
Mfr # 5794062
product price: 
$114.99
/ea
Morse Cap Screw Counterbore, Straight Shank, Series 1766, 8 mm Screw, 05315 Bore Dia, 612 Overall Le 25750
Morse

Cap Screw Counterbore, Straight Shank, Series 1766, 8 mm Screw, 05315 Bore Dia, 612 Overall Le

Zoro # G608029127
Mfr # 25750
product price: 
$89.95
/ea
Internal Tool A Nc-094-125 N/C Counterbore 85-0941
Internal Tool

A Nc-094-125 N/C Counterbore

Zoro # G500402363
Mfr # 85-0941
product price: 
$36.79
/ea
Harvey Tool Counterbores - Flat Bottom 23320-C3
Harvey Tool

Counterbores - Flat Bottom

Zoro # G601020039
Mfr # 23320-C3
product price: 
$59.59
/ea
Garant Counterbore with Interchangeable Pilot Pins, 33 mm 156520 33
Garant

Counterbore with Interchangeable Pilot Pins, 33 mm

Zoro # G414389828
Mfr # 156520 33
product price: 
$199.99
/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: 
$71.85
/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: 
$213.99
/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, MS33649, Solid, 3/8-24 UNJF MS33649-3S
Scientific Cutting Tools

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

Zoro # G8216835
Mfr # MS33649-3S
product price: 
$227.99
/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: 
$217.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.0312" (1/32), Shank Dia.: 1/8" 25431
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.0312" (1/32), Shank Dia.: 1/8"

Zoro # G7257244
Mfr # 25431
product price: 
$64.19
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.0625" (1/16) 25462-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.0625" (1/16)

Zoro # G7256964
Mfr # 25462-C3
product price: 
$71.19
/ea
Harvey Tool Counterbores - Flat Bottom, 0.1181", Number of Flutes: 4 2343M-C3
Harvey Tool

Counterbores - Flat Bottom, 0.1181", Number of Flutes: 4

Zoro # G7164765
Mfr # 2343M-C3
product price: 
$60.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1181" 2553M-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.1181"

Zoro # G7249620
Mfr # 2553M-C3
product price: 
$71.19
/ea
Harvey Tool Counterbores - Flat Bottom, 0.5000" (1/2) 23432
Harvey Tool

Counterbores - Flat Bottom, 0.5000" (1/2)

Zoro # G7160504
Mfr # 23432
product price: 
$150.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.5000" (1/2) 25532-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.5000" (1/2)

Zoro # G7167048
Mfr # 25532-C3
product price: 
$237.99
/ea
Cleveland Counterbore, 1.375" L, 0.125" dia., Bright C46548
Cleveland

Counterbore, 1.375" L, 0.125" dia., Bright

Zoro # G4869809
Mfr # C46548
product price: 
$34.69
/ea
Garant Interchangeable Pilot Pin for Counterbore 156520 33-40, 22 mm 156620 10X22
Garant

Interchangeable Pilot Pin for Counterbore 156520 33-40, 22 mm

Zoro # G014389815
Mfr # 156620 10X22
product price: 
$47.45
/ea
Link 8MM Co 3Fl 8.8 Pilot X 13.8 Cbore 7.94 Shank X 100 Oal 75-CO-524
Link

8MM Co 3Fl 8.8 Pilot X 13.8 Cbore 7.94 Shank X 100 Oal

Zoro # G7641246
Mfr # 75-CO-524
product price: 
$85.45
/ea
Link Ua7-12MM Metric Shcs HSS Counterbore 72-L2-516
Link

Ua7-12MM Metric Shcs HSS Counterbore

Zoro # G7643985
Mfr # 72-L2-516
product price: 
$51.65
/ea
Link 3MM Co 3Fl 3.8 Pilot X 6.3 Cbore 6.35 Shank X 100 Oal 75-CO-520
Link

3MM Co 3Fl 3.8 Pilot X 6.3 Cbore 6.35 Shank X 100 Oal

Zoro # G7644956
Mfr # 75-CO-520
product price: 
$62.49
/ea
Link #5 HSS Se .138 X .250 Drill .220 Cbore 1/4 Shank 1-7/32 Oal 50-L2-180
Link

#5 HSS Se .138 X .250 Drill .220 Cbore 1/4 Shank 1-7/32 Oal

Zoro # G7642707
Mfr # 50-L2-180
product price: 
$18.15
/ea
Porting Tools & Counterbores (993 items) - Page 6
  • First
  • Previous
  • 6
    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