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

Porting Tools & Counterbores (993 items) - Page 3

Drill America 5/8" X 5/16" Pilots for Counterbore DEWPIL5/8X5/16
Drill America

5/8" X 5/16" Pilots for Counterbore

Zoro # G1745496
Mfr # DEWPIL5/8X5/16
product price:  $12.75
/ea
Drill America No 10 .189mm Machine Screw Solid Counterbore DEWCBRSOL10
Drill America

No 10 .189mm Machine Screw Solid Counterbore

Zoro # G1743999
Mfr # DEWCBRSOL10
product price:  $13.65
/ea
Drill America 3/16" X 3/32" Pilots for Counterbore DEWPIL3/16X3/32
Drill America

3/16" X 3/32" Pilots for Counterbore

Zoro # G1746780
Mfr # DEWPIL3/16X3/32
product price:  $6.25
/ea
Sold in mult. of 2 for $12.50
Garant Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 8X3.3 mm 156220 8X3,3
Garant

Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 8X3.3 mm

Zoro # G014376389
Mfr # 156220 8X3,3
product price:  $23.39
/ea
Drill America 1/4" HSS Solid Counterbore DEWCBRSOL1/4
Drill America

1/4" HSS Solid Counterbore

Zoro # G1744839
Mfr # DEWCBRSOL1/4
product price:  $24.15
/ea
Harvey Tool 0.2900'' Cutter DIA x 0.8750'', 7/8 Flute Length - 4 FL - AlTiN Coated 23689-C3
Harvey Tool

0.2900'' Cutter DIA x 0.8750'', 7/8 Flute Length - 4 FL - AlTiN Coated

Zoro # G713082161
Mfr # 23689-C3
product price:  $94.15
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 10X5.5 mm 156020 10X5,5
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 10X5.5 mm

Zoro # G114389555
Mfr # 156020 10X5,5
product price:  $21.49
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.3750" (3/8), Number of Flutes: 4 25524
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.3750" (3/8), Number of Flutes: 4

Zoro # G7260297
Mfr # 25524
product price:  $144.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.3750" (3/8), Flute Length: 1" 25524-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.3750" (3/8), Flute Length: 1"

Zoro # G7262126
Mfr # 25524-C3
product price:  $166.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0625" (1/16) 23362
Harvey Tool

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

Zoro # G7242858
Mfr # 23362
product price:  $51.29
/ea
Garant Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 18X8.5 mm 156220 18X8,5
Garant

Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 18X8.5 mm

Zoro # G414375555
Mfr # 156220 18X8,5
product price:  $44.59
/ea
Drill America No 8 .163mm Machine Screw Solid Counterbore DEWCBRSOL8
Drill America

No 8 .163mm Machine Screw Solid Counterbore

Zoro # G1739695
Mfr # DEWCBRSOL8
product price:  $13.29
/ea
Super Tool Reduced Shank Counterbore, 1/4" D 52208
Super Tool

Reduced Shank Counterbore, 1/4" D

Zoro # G0331541
Mfr # 52208
product price:  $72.49
/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, 1" D, Carbide Tipped 59813
Super Tool

Counterbore, 1" D, Carbide Tipped

Zoro # G0330309
Mfr # 59813
product price:  $134.99
/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 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
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
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
Harvey Tool 0.4375 in. 7/16 Cutter dia. x 1 in. 1 Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated 731628-C3
Harvey Tool

0.4375 in. 7/16 Cutter dia. x 1 in. 1 Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated

Zoro # G511325422
Mfr # 731628-C3
product price:  $146.99
/ea
Harvey Tool 3/16 Cutter dia. x .75  in. 3/4 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes 23412-C8
Harvey Tool

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

Zoro # G711326403
Mfr # 23412-C8
product price:  $58.19
/ea
Keo No 6 through 1/2" +1/32 Oversize Kounterbore Set 902-000-042
Keo

No 6 through 1/2" +1/32 Oversize Kounterbore Set

Zoro # G2600656
Mfr # 902-000-042
product price:  $577.99
/ea
Super Tool Reduced Shank Counterbore, 1/2" D 52216
Super Tool

Reduced Shank Counterbore, 1/2" D

Zoro # G0331340
Mfr # 52216
product price:  $103.99
/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 Reduced Shank Counterbore, 1" D 52232
Super Tool

Reduced Shank Counterbore, 1" D

Zoro # G0331289
Mfr # 52232
product price:  $142.13
/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
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
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 6 X .150" High Speed Steel 3 Flute Solid Pilot Counterbore 2007-0006
Hhip

No 6 X .150" High Speed Steel 3 Flute Solid Pilot Counterbore

Zoro # G2467983
Mfr # 2007-0006
product price:  $10.19
/ea
Garant Mini Counterbore for Through Holes, 180 Deg, Uncoated, 11.5X6.4 mm 155600 11,5X6,4
Garant

Mini Counterbore for Through Holes, 180 Deg, Uncoated, 11.5X6.4 mm

Zoro # G814389848
Mfr # 155600 11,5X6,4
product price:  $40.39
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 6.5X3.9 mm 156020 6,5X3,9
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 6.5X3.9 mm

Zoro # G614389512
Mfr # 156020 6,5X3,9
product price:  $24.55
/ea
Garant Mini Counterbore for Through Holes, 180 Deg, Uncoated, 2.8X1.5 mm 155700 2,8X1,5
Garant

Mini Counterbore for Through Holes, 180 Deg, Uncoated, 2.8X1.5 mm

Zoro # G514389629
Mfr # 155700 2,8X1,5
product price:  $30.99
/ea
Harvey Tool 0.4220'', 27/64 Cutter DIA x 1.0000'', 1 Flute Length - 4 FL - AlTiN Coated 23427-C3
Harvey Tool

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

Zoro # G413081587
Mfr # 23427-C3
product price:  $138.99
/ea
Garant Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 6.5X2.9 mm 156220 6,5X2,9
Garant

Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 6.5X2.9 mm

Zoro # G814376060
Mfr # 156220 6,5X2,9
product price:  $25.99
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 8X4.5 mm 156020 8X4,5
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 8X4.5 mm

Zoro # G114389470
Mfr # 156020 8X4,5
product price:  $19.79
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 10X5.3 mm 156020 10X5,3
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 10X5.3 mm

Zoro # G614389642
Mfr # 156020 10X5,3
product price:  $21.49
/ea
Porting Tools & Counterbores (993 items) - Page 3
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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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