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  1. Home
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  5. Cutting Tools
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  7. Porting Tools & Counterbores

Porting Tools & Counterbores (993 items) - Page 11

Internal Tool A Nc-390-437 N/C Counterbore 85-3901
Internal Tool

A Nc-390-437 N/C Counterbore

Zoro # G100402466
Mfr # 85-3901
product price: 
$127.99
/ea
Garant Interchangeable Pilot Pin for Counterbore 156520 18-20, 8.4 mm 156620 5X8,4
Garant

Interchangeable Pilot Pin for Counterbore 156520 18-20, 8.4 mm

Zoro # G214389592
Mfr # 156620 5X8,4
product price: 
$33.15
/ea
Super Tool Counterbore, 27/32" D, Carbide Tipped 5778438
Super Tool

Counterbore, 27/32" D, Carbide Tipped

Zoro # G0330290
Mfr # 5778438
product price: 
$145.99
/ea
Morse Cap Screw Counterbore, Straight Shank, Series 1766, 6 mm Screw, 04134 Bore Dia, 618 Overall Le 25749
Morse

Cap Screw Counterbore, Straight Shank, Series 1766, 6 mm Screw, 04134 Bore Dia, 618 Overall Le

Zoro # G808029064
Mfr # 25749
product price: 
$82.25
/ea
Internal Tool A Nc-343-375 N/C Counterbore 85-3431
Internal Tool

A Nc-343-375 N/C Counterbore

Zoro # G600402379
Mfr # 85-3431
product price: 
$108.99
/ea
Internal Tool A Nc-250-250 N/C Counterbore 85-2501
Internal Tool

A Nc-250-250 N/C Counterbore

Zoro # G600402430
Mfr # 85-2501
product price: 
$57.99
/ea
Link 3/8" Co 3Fl 0.406 Pilot X 0.604 Cbore 3/8" Shank X 5" Oal 50-CO-186
Link

3/8" Co 3Fl 0.406 Pilot X 0.604 Cbore 3/8" Shank X 5" Oal

Zoro # G7641270
Mfr # 50-CO-186
product price: 
$96.55
/ea
Super Tool Counterbore, 29/32" D, Carbide Tipped 5799062
Super Tool

Counterbore, 29/32" D, Carbide Tipped

Zoro # G0330239
Mfr # 5799062
product price: 
$170.99
/ea
Link Ua6-10MM Metric Shcs HSS Counterbore 72-L2-515
Link

Ua6-10MM Metric Shcs HSS Counterbore

Zoro # G7643967
Mfr # 72-L2-515
product price: 
$37.79
/ea
Tungaloy Solid End Mill Head, VGC120L10.0R20-, PK2 6859335
Tungaloy

Solid End Mill Head, VGC120L10.0R20-, PK2

Zoro # G901779019
Mfr # 6859335
product price: 
$201.99
/pk 2, $101.00/ea
Internal Tool A Nc-641-750 N/C Counterbore 85-6411
Internal Tool

A Nc-641-750 N/C Counterbore

Zoro # G400402531
Mfr # 85-6411
product price: 
$444.99
/ea
Super Tool Reduced Shank Counterbore, 5/16" D 52210
Super Tool

Reduced Shank Counterbore, 5/16" D

Zoro # G0331313
Mfr # 52210
product price: 
$74.69
/ea
Internal Tool A Nc-140-187 N/C Counterbore 85-1401
Internal Tool

A Nc-140-187 N/C Counterbore

Zoro # G600402416
Mfr # 85-1401
product price: 
$50.39
/ea
Internal Tool A Nc-297-312 N/C Counterbore 85-2971
Internal Tool

A Nc-297-312 N/C Counterbore

Zoro # G200402403
Mfr # 85-2971
product price: 
$80.49
/ea
Link Ua3 #5 English Shcs HSS Counterbore 60-L2-293
Link

Ua3 #5 English Shcs HSS Counterbore

Zoro # G7636118
Mfr # 60-L2-293
product price: 
$21.75
/ea
Link No 10 Co 3Fl 0.221 Pilot X 0.346 Cbore 5/16" Shank X 4" Oal 50-CO-183
Link

No 10 Co 3Fl 0.221 Pilot X 0.346 Cbore 5/16" Shank X 4" Oal

Zoro # G7637308
Mfr # 50-CO-183
product price: 
$75.75
/ea
Link 10MM Co 3Fl 10.8 Pilot X 16.8 Cbore 9.53 Shank X 125 Oal 75-CO-525
Link

10MM Co 3Fl 10.8 Pilot X 16.8 Cbore 9.53 Shank X 125 Oal

Zoro # G7642506
Mfr # 75-CO-525
product price: 
$109.99
/ea
Super Tool Counterbore, 27/32" D, Carbide Tipped 5798438
Super Tool

Counterbore, 27/32" D, Carbide Tipped

Zoro # G0330187
Mfr # 5798438
product price: 
$158.99
/ea
Morse Cap Screw Counterbore, Straight Shank, Series 1766, 12 mm Screw, 06496 Bore Dia, 712 Overall L 25752
Morse

Cap Screw Counterbore, Straight Shank, Series 1766, 12 mm Screw, 06496 Bore Dia, 712 Overall L

Zoro # G908029070
Mfr # 25752
product price: 
$125.99
/ea
Hhip 5/16 X 7/16" High Speed Steel 2 Flute Solid  Cap Screw Counterbore 2007-0106
Hhip

5/16 X 7/16" High Speed Steel 2 Flute Solid Cap Screw Counterbore

Zoro # G2467895
Mfr # 2007-0106
product price: 
$17.99
/ea
Garant Interchangeable Pilot Pin for Counterbore 156520 26-30, 14 mm 156620 8X14
Garant

Interchangeable Pilot Pin for Counterbore 156520 26-30, 14 mm

Zoro # G614389598
Mfr # 156620 8X14
product price: 
$39.75
/ea
Super Tool Counterbore, 29/32" D, Carbide Tipped 5779062
Super Tool

Counterbore, 29/32" D, Carbide Tipped

Zoro # G0330001
Mfr # 5779062
product price: 
$166.99
/ea
Super Tool Reduced Shank Counterbore, 25/32" D 52225
Super Tool

Reduced Shank Counterbore, 25/32" D

Zoro # G0331508
Mfr # 52225
product price: 
$132.99
/ea
Garant Interchangeable Pilot Pin for Counterbore 156520 26-30, 17 mm 156620 8X17
Garant

Interchangeable Pilot Pin for Counterbore 156520 26-30, 17 mm

Zoro # G214389547
Mfr # 156620 8X17
product price: 
$39.75
/ea
Internal Tool A Nc-469-500 N/C Counterbore 85-4691
Internal Tool

A Nc-469-500 N/C Counterbore

Zoro # G800402407
Mfr # 85-4691
product price: 
$170.99
/ea
Hhip M4 X 4.5mm HSS 3 Flute Straight Shank Solid Pilot Counterbore 2007-0055
Hhip

M4 X 4.5mm HSS 3 Flute Straight Shank Solid Pilot Counterbore

Zoro # G2468105
Mfr # 2007-0055
product price: 
$14.39
/ea
Harvey Tool Counterbores-Flat Bottom, 676708-C3, AlTiN, 1/8" Cutter Diameter, 3/4" Flute Length 676708-C3
Harvey Tool

Counterbores-Flat Bottom, 676708-C3, AlTiN, 1/8" Cutter Diameter, 3/4" Flute Length

Zoro # G722920706
Mfr # 676708-C3
product price: 
$59.39
/ea
Tungaloy Solid End Mill Head, VGC120L10.0R04-, PK2 6859334
Tungaloy

Solid End Mill Head, VGC120L10.0R04-, PK2

Zoro # G401779090
Mfr # 6859334
product price: 
$197.99
/pk 2, $99.00/ea
Kodiak Cutting Tools No. 1 Counterbores 1/32 Oversize Capscrew Style 5496106
Kodiak Cutting Tools

No. 1 Counterbores 1/32 Oversize Capscrew Style

Zoro # G8615357
Mfr # 5496106
product price: 
$250.99
/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 #10 HSS Se .200 X .312 Drill .332 Cbore 5/16 Shank 1-1/2 Oal 50-L2-183
Link

#10 HSS Se .200 X .312 Drill .332 Cbore 5/16 Shank 1-1/2 Oal

Zoro # G7638875
Mfr # 50-L2-183
product price: 
$20.35
/ea
Link #8 3Xd HSS Se .178 X .534 Drill .290 Cbore 3/8 Shank 2-1/4 Oal 50-L2-382
Link

#8 3Xd HSS Se .178 X .534 Drill .290 Cbore 3/8 Shank 2-1/4 Oal

Zoro # G7642716
Mfr # 50-L2-382
product price: 
$35.15
/ea
Super Tool Reduced Shank Counterbore, 15/32" D 52215
Super Tool

Reduced Shank Counterbore, 15/32" D

Zoro # G0331523
Mfr # 52215
product price: 
$102.99
/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
Link 3/8" 3Xd HSS Se .406 X 1.218 Drill .593 Cbore 1/2 Shank 3-1/2 Oal 50-L2-386
Link

3/8" 3Xd HSS Se .406 X 1.218 Drill .593 Cbore 1/2 Shank 3-1/2 Oal

Zoro # G7638805
Mfr # 50-L2-386
product price: 
$64.29
/ea
Link #4 HSS Se .125 X .220 Drill .197 Cbore 1/4 Shank 1-3/16 Oal 50-L2-179
Link

#4 HSS Se .125 X .220 Drill .197 Cbore 1/4 Shank 1-3/16 Oal

Zoro # G7636109
Mfr # 50-L2-179
product price: 
$21.29
/ea
Porting Tools & Counterbores (993 items) - Page 11
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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.

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