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 Customer Service
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 4

Super Tool Reduced Shank Counterbore, 7/16" D 52214
Super Tool

Reduced Shank Counterbore, 7/16" D

Zoro # G0331471
Mfr # 52214
product price:  $97.69
/ea
Super Tool Counterbore, 11/16" D, Carbide Tipped 56408
Super Tool

Counterbore, 11/16" D, Carbide Tipped

Zoro # G0330047
Mfr # 56408
product price:  $113.99
/ea
Link 8MM HSS Se 8.73 X 11.11 Drill 13.49 Cbore 11.11 Shank 46.04 Oal 75-L2-524
Link

8MM HSS Se 8.73 X 11.11 Drill 13.49 Cbore 11.11 Shank 46.04 Oal

Zoro # G7643809
Mfr # 75-L2-524
product price:  $29.75
/ea
Super Tool Counterbore, 5/16" D, Carbide Tipped 56402
Super Tool

Counterbore, 5/16" D, Carbide Tipped

Zoro # G0330412
Mfr # 56402
product price:  $90.59
/ea
Super Tool Counterbore, 3/8" D, Carbide Tipped 56403
Super Tool

Counterbore, 3/8" D, Carbide Tipped

Zoro # G0330379
Mfr # 56403
product price:  $105.99
/ea
Hhip No 8 X 11/64" High Speed Steel 3 Flute Solid Pilot Counterbore 2007-0008
Hhip

No 8 X 11/64" High Speed Steel 3 Flute Solid Pilot Counterbore

Zoro # G2468053
Mfr # 2007-0008
product price:  $14.79
/ea
Kodiak Cutting Tools No. 3/4 Counterbores 1/64 Oversize Capscrew Style 5495930
Kodiak Cutting Tools

No. 3/4 Counterbores 1/64 Oversize Capscrew Style

Zoro # G8627047
Mfr # 5495930
product price:  $158.99
/ea
Super Tool Counterbore, 7/16" D, Carbide Tipped 56404
Super Tool

Counterbore, 7/16" D, Carbide Tipped

Zoro # G0330123
Mfr # 56404
product price:  $108.99
/ea
Hhip 5/16 X 11/32 High Speed Steel 3 Flute Solid  Pilot Counterbore 2007-0020
Hhip

5/16 X 11/32 High Speed Steel 3 Flute Solid Pilot Counterbore

Zoro # G2467904
Mfr # 2007-0020
product price:  $18.29
/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
Link 1/2" Co 3Fl 0.531 Pilot X 0.789 Cbore 1/2" Shank X 6" Oal 50-CO-188
Link

1/2" Co 3Fl 0.531 Pilot X 0.789 Cbore 1/2" Shank X 6" Oal

Zoro # G7638909
Mfr # 50-CO-188
product price:  $115.99
/ea
Link 3/8" HSS Se .406 X .468 Drill .593 Cbore 5/8 Shank 2-11/32 Oal 50-L2-186
Link

3/8" HSS Se .406 X .468 Drill .593 Cbore 5/8 Shank 2-11/32 Oal

Zoro # G7645017
Mfr # 50-L2-186
product price:  $30.15
/ea
Super Tool Counterbore, 25/32" D, Carbide Tipped 5777812
Super Tool

Counterbore, 25/32" D, Carbide Tipped

Zoro # G0330281
Mfr # 5777812
product price:  $133.99
/ea
Super Tool Reduced Shank Counterbore, 1-3/16" D 52238
Super Tool

Reduced Shank Counterbore, 1-3/16" D

Zoro # G0331499
Mfr # 52238
product price:  $192.99
/ea
Super Tool Reduced Shank Counterbore, 3/8" D 52212
Super Tool

Reduced Shank Counterbore, 3/8" D

Zoro # G0331410
Mfr # 52212
product price:  $82.89
/ea
Super Tool Counterbore, 1-1/2" D, Carbide Tipped 56421
Super Tool

Counterbore, 1-1/2" D, Carbide Tipped

Zoro # G0329852
Mfr # 56421
product price:  $236.99
/ea
No Product Image Available
Super Tool

Counterbore Pilot, 1/2 X 3/16

Zoro # G007386043
Mfr # 56226
product price:  $39.49
/ea
Link 10MM HSS Se 10.32 X 14.29 Drill 16.66 Cbore 12.70 Shank 52.39 Oal 75-L2-525
Link

10MM HSS Se 10.32 X 14.29 Drill 16.66 Cbore 12.70 Shank 52.39 Oal

Zoro # G7637326
Mfr # 75-L2-525
product price:  $32.59
/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
Harvey Tool 1/16 Cutter dia. x 1/4 in. Flute Length Carbide Flat Bottom Counterbore, 4 Flutes, TiB2 Coated 23362-C8
Harvey Tool

1/16 Cutter dia. x 1/4 in. Flute Length Carbide Flat Bottom Counterbore, 4 Flutes, TiB2 Coated

Zoro # G711326380
Mfr # 23362-C8
product price:  $58.79
/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
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
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
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
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
Link 5/16" 3Xd HSS Se .340 X 1.020 Drill .490 Cbore 1/2 Shank 3 Oal 50-L2-385
Link

5/16" 3Xd HSS Se .340 X 1.020 Drill .490 Cbore 1/2 Shank 3 Oal

Zoro # G7637344
Mfr # 50-L2-385
product price:  $57.45
/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, 1-1/8" 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, 3/4" D, Carbide Tipped 56409
Super Tool

Counterbore, 3/4" D, Carbide Tipped

Zoro # G0330080
Mfr # 56409
product price:  $127.99
/ea
Super Tool Counterbore, 1" D, Carbide Tipped 59813
Super Tool

Counterbore, 1" D, Carbide Tipped

Zoro # G0330309
Mfr # 59813
product price:  $134.99
/ea
Scientific Cutting Tools Port Tool, MS16142, Reamer, 7/16-20 UNF MS16142-4R
Scientific Cutting Tools

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

Zoro # G7550295
Mfr # MS16142-4R
product price:  $229.99
/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:  $194.99
/ea
Keo Counterbore Set, Metric, 6 pcs., 3F, Medium 902-000-069
Keo

Counterbore Set, Metric, 6 pcs., 3F, Medium

Zoro # G8925472
Mfr # 902-000-069
product price:  $426.99
/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, 0.2031" (13/64) 23413-C3
Harvey Tool

Counterbores - Flat Bottom, 0.2031" (13/64)

Zoro # G7153276
Mfr # 23413-C3
product price:  $78.59
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2031" (13/64), Overall Length: 4" 25513-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.2031" (13/64), Overall Length: 4"

Zoro # G7262607
Mfr # 25513-C3
product price:  $114.99
/ea
Porting Tools & Counterbores (993 items) - Page 4
  • First
  • Previous
  • 4
    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 BitsTapsEnd MillsCountersinks, Center Drills & Spotting DrillsWrenches
Precision Measuring ToolsMeasuring and Layout ToolsKnives, Cutters & SnipsPower Saw BladesHammers and Striking Tools
counter bore setmetric shcsmetric counterbore setmetric counterboreinterchangeable pilot counterbore
1-1/4 in counterborescientific cutting toolscounterbores - flat bottompilot counterborecounter bore pilot

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