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 22

Keo Counterbore, Decimal Inch, 3 in 902-000-090
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G421725336
Mfr # 902-000-090
product price: 
$61.89
/ea
Keo Counterbore, Metric, 71 mm 902-000-201
Keo

Counterbore, Metric, 71 mm

Zoro # G121727661
Mfr # 902-000-201
product price: 
$52.19
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1250" (1/8) 25508-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.1250" (1/8)

Zoro # G7242894
Mfr # 25508-C3
product price: 
$71.89
/ea
Harvey Tool Counterbores - Flat Bottom, 0.4687" (15/32) 23430-C3
Harvey Tool

Counterbores - Flat Bottom, 0.4687" (15/32)

Zoro # G7159208
Mfr # 23430-C3
product price: 
$178.99
/ea
Drill America No 3 .098mm Machine Screw Solid Counterbore DEWCBRSOL3
Drill America

No 3 .098mm Machine Screw Solid Counterbore

Zoro # G1739756
Mfr # DEWCBRSOL3
product price: 
$10.59
/ea
Keo Counterbore, Decimal Inch, 3 in 902-000-332
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G221725291
Mfr # 902-000-332
product price: 
$58.15
/ea
Keo Counterbore, Metric, 100 mm 902-000-243
Keo

Counterbore, Metric, 100 mm

Zoro # G621725938
Mfr # 902-000-243
product price: 
$85.79
/ea
Keo Counterbore, Decimal Inch, 3 in 902-000-328
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G521725038
Mfr # 902-000-328
product price: 
$63.39
/ea
Harvey Tool Counterbores - Flat Bottom, 0.3150", Finish - Machining: AlTiN 2348M-C3
Harvey Tool

Counterbores - Flat Bottom, 0.3150", Finish - Machining: AlTiN

Zoro # G7260674
Mfr # 2348M-C3
product price: 
$116.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1562" (5/32) 25510-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.1562" (5/32)

Zoro # G7255415
Mfr # 25510-C3
product price: 
$85.15
/ea
Drill America 5/8" 21/32" Continuous Pilot Capscrew Counterbore DEWCSCBR5/8
Drill America

5/8" 21/32" Continuous Pilot Capscrew Counterbore

Zoro # G1742644
Mfr # DEWCSCBR5/8
product price: 
$54.45
/ea
Harvey Tool Counterbores - Flat Bottom, 0.1562" (5/32) 23410-C3
Harvey Tool

Counterbores - Flat Bottom, 0.1562" (5/32)

Zoro # G7155306
Mfr # 23410-C3
product price: 
$58.29
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1181", Shank Dia.: 1/8" 2553M
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.1181", Shank Dia.: 1/8"

Zoro # G7263359
Mfr # 2553M
product price: 
$62.69
/ea
Harvey Tool 0.4220'', 27/64 Cutter DIA x 1.0000'', 1 Flute Length - 4 FL 23427
Harvey Tool

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

Zoro # G213081602
Mfr # 23427
product price: 
$120.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0700" 23370-C3
Harvey Tool

Counterbores - Flat Bottom, 0.0700"

Zoro # G7149365
Mfr # 23370-C3
product price: 
$58.49
/ea
Keo Counterbore, Decimal Inch, 3 in 902-000-096
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G721727566
Mfr # 902-000-096
product price: 
$62.19
/ea
Keo Counterbore, Metric, 80 mm 902-000-228
Keo

Counterbore, Metric, 80 mm

Zoro # G721725272
Mfr # 902-000-228
product price: 
$69.29
/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
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.0312" (1/32) 25431-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.0312" (1/32)

Zoro # G7243269
Mfr # 25431-C3
product price: 
$73.19
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.3937" 2550M-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.3937"

Zoro # G7247338
Mfr # 2550M-C3
product price: 
$199.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0787" 2332M
Harvey Tool

Counterbores - Flat Bottom, 0.0787"

Zoro # G7153687
Mfr # 2332M
product price: 
$51.29
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1406" (9/64) 25509
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.1406" (9/64)

Zoro # G7242964
Mfr # 25509
product price: 
$64.15
/ea
Drill America No 5 .124mm Machine Screw Solid Counterbore DEWCBRSOL5
Drill America

No 5 .124mm Machine Screw Solid Counterbore

Zoro # G1744997
Mfr # DEWCBRSOL5
product price: 
$13.59
/ea
Harvey Tool Counterbores - Flat Bottom, 0.3750" (3/8) 23424-C6
Harvey Tool

Counterbores - Flat Bottom, 0.3750" (3/8)

Zoro # G7158885
Mfr # 23424-C6
product price: 
$119.99
/ea
Keo Counterbore, Decimal Inch, 6 in 902-000-153
Keo

Counterbore, Decimal Inch, 6 in

Zoro # G921726390
Mfr # 902-000-153
product price: 
$125.99
/ea
Keo Counterbore, Metric, 100 mm 902-000-261
Keo

Counterbore, Metric, 100 mm

Zoro # G121726640
Mfr # 902-000-261
product price: 
$112.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.1575", Shank Dia.: 3/16" 2344M
Harvey Tool

Counterbores - Flat Bottom, 0.1575", Shank Dia.: 3/16"

Zoro # G7243025
Mfr # 2344M
product price: 
$49.15
/ea
Harvey Tool Counterbores - Flat Bottom, 0.3594" (23/64), Material - Machining: Carbide 23423
Harvey Tool

Counterbores - Flat Bottom, 0.3594" (23/64), Material - Machining: Carbide

Zoro # G7155139
Mfr # 23423
product price: 
$98.29
/ea
Harvey Tool 0.2420'' Cutter DIA x 0.8750'', 7/8 Flute Length - 4 FL 23641
Harvey Tool

0.2420'' Cutter DIA x 0.8750'', 7/8 Flute Length - 4 FL

Zoro # G913081735
Mfr # 23641
product price: 
$66.39
/ea
Keo Counterbore, Decimal Inch, 5 in 902-000-309
Keo

Counterbore, Decimal Inch, 5 in

Zoro # G221725109
Mfr # 902-000-309
product price: 
$127.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.1968", Flute Length: 3/4" 2345M
Harvey Tool

Counterbores - Flat Bottom, 0.1968", Flute Length: 3/4"

Zoro # G7242937
Mfr # 2345M
product price: 
$64.29
/ea
Keo Counterbore, Decimal Inch, 6 in 902-000-168
Keo

Counterbore, Decimal Inch, 6 in

Zoro # G821725295
Mfr # 902-000-168
product price: 
$177.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.3594" (23/64), Number of Flutes: 4 23423-C3
Harvey Tool

Counterbores - Flat Bottom, 0.3594" (23/64), Number of Flutes: 4

Zoro # G7154588
Mfr # 23423-C3
product price: 
$112.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.4375" (7/16) 23428-C3
Harvey Tool

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

Zoro # G7158544
Mfr # 23428-C3
product price: 
$142.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2500" (1/4) 25516-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.2500" (1/4)

Zoro # G7248178
Mfr # 25516-C3
product price: 
$114.99
/ea
Keo Counterbore, Decimal Inch, 6 in 902-000-162
Keo

Counterbore, Decimal Inch, 6 in

Zoro # G921726284
Mfr # 902-000-162
product price: 
$177.99
/ea
Porting Tools & Counterbores (993 items) - Page 22
  • First
  • Previous
  • 22
    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
Sockets & RatchetsMeasuring and Layout ToolsClampsCutting and Shaping ToolsScrewdrivers and Nutdrivers
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