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

Porting Tools & Counterbores (995 items)

H & H Industrial Products 21 Piece High Speed Steel Interchangeable Pilot Counterbore Set 2007-0023
H & H Industrial Products

21 Piece High Speed Steel Interchangeable Pilot Counterbore Set

Zoro # G7177336
Mfr # 2007-0023
product price:  $124.99
/ea
Hhip 7 Piece High Speed Steel 3 Flute Solid  Pilot Counterbore Set 2007-0002
Hhip

7 Piece High Speed Steel 3 Flute Solid Pilot Counterbore Set

Zoro # G2468175
Mfr # 2007-0002
product price:  $104.99
/ea
Drill America 3/8" X 5/32" Pilot Hole HSS Straight Shank Counterbore DEWCBR3/8
Drill America

3/8" X 5/32" Pilot Hole HSS Straight Shank Counterbore

Zoro # G1742504
Mfr # DEWCBR3/8
product price:  $27.75
/ea
Drill America 7/32" X 5/32" Pilots for Counterbore DEWPIL7/32X5/32
Drill America

7/32" X 5/32" Pilots for Counterbore

Zoro # G1743019
Mfr # DEWPIL7/32X5/32
product price:  $6.79
/ea
Sold in mult. of 2 for $13.58
Super Tool Counterbore, 3/4" D, Carbide Tipped 59809
Super Tool

Counterbore, 3/4" D, Carbide Tipped

Zoro # G0329907
Mfr # 59809
product price:  $111.99
/ea
Scientific Cutting Tools Port Tool, MS16142, Reamer, 9/16-18 UNF MS16142-6R
Scientific Cutting Tools

Port Tool, MS16142, Reamer, 9/16-18 UNF

Zoro # G8381073
Mfr # MS16142-6R
product price:  $251.99
/ea
Scientific Cutting Tools Port Tool, 1-5/8"-12, 2-1/4 in, Straight MS16142-20R
Scientific Cutting Tools

Port Tool, 1-5/8"-12, 2-1/4 in, Straight

Zoro # G8367335
Mfr # MS16142-20R
product price:  $340.99
/ea
Hhip 5/8 X 21/32 High Speed Steel 3 Flute Solid  Pilot Counterbore 2007-0033
Hhip

5/8 X 21/32 High Speed Steel 3 Flute Solid Pilot Counterbore

Zoro # G2468096
Mfr # 2007-0033
product price:  $24.19
/ea
Melin Tool Co Countersink, Cobalt, 82 deg., 1/2 HSP3-1/2-82T
Melin Tool Co

Countersink, Cobalt, 82 deg., 1/2

Zoro # G4558519
Mfr # HSP3-1/2-82T
product price:  $34.15
/ea
Garant Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 11X5 mm 156220 11X5
Garant

Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 11X5 mm

Zoro # G614375614
Mfr # 156220 11X5
product price:  $24.29
/ea
Scientific Cutting Tools PortTool, 1-1/16"-12, 2-1/8in, Straight MS16142-12R
Scientific Cutting Tools

PortTool, 1-1/16"-12, 2-1/8in, Straight

Zoro # G8390681
Mfr # MS16142-12R
product price:  $311.99
/ea
Drill America 9/32" X 3/16" Pilots for Counterbore DEWPIL9/32X3/16
Drill America

9/32" X 3/16" Pilots for Counterbore

Zoro # G1743929
Mfr # DEWPIL9/32X3/16
product price:  $8.19
/ea
Sold in mult. of 2 for $16.38
Drill America 3/4" X 3/16" HSS Aircraft Counterbore 1/4" Shank DEWA/CCBR3/4
Drill America

3/4" X 3/16" HSS Aircraft Counterbore 1/4" Shank

Zoro # G1745049
Mfr # DEWA/CCBR3/4
product price:  $43.85
/ea
H & H Industrial Products 40 Piece 1/4-1" HSS Straight-Shank 3 Flute Counterbore Set 2007-0041
H & H Industrial Products

40 Piece 1/4-1" HSS Straight-Shank 3 Flute Counterbore Set

Zoro # G7177345
Mfr # 2007-0041
product price:  $427.99
/ea
Super Tool Reduced Shank Counterbore, 9/16" D 52218
Super Tool

Reduced Shank Counterbore, 9/16" D

Zoro # G0331167
Mfr # 52218
product price:  $122.56
/ea
Hhip 6 Piece High Speed Steel 3 Flute Solid  Pilot Counterbore Set 2007-0003
Hhip

6 Piece High Speed Steel 3 Flute Solid Pilot Counterbore Set

Zoro # G2468148
Mfr # 2007-0003
product price:  $212.88
/ea
Otc Motorcycle Spring Hook OTC4740
Otc

Motorcycle Spring Hook

Zoro # G408170807
Mfr # OTC4740
product price:  $21.09
/ea
Scientific Cutting Tools PortTool, 1-1/16"-12, 2-1/8in, Straight AS5202-12R
Scientific Cutting Tools

PortTool, 1-1/16"-12, 2-1/8in, Straight

Zoro # G8150274
Mfr # AS5202-12R
product price:  $303.99
/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
Keo Counterbore, 1/32 Clearance, Size 3/4, Co 902-000-035
Keo

Counterbore, 1/32 Clearance, Size 3/4, Co

Zoro # G3346673
Mfr # 902-000-035
product price:  $233.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.3281" (21/64) 23421
Harvey Tool

Counterbores - Flat Bottom, 0.3281" (21/64)

Zoro # G7148604
Mfr # 23421
product price:  $94.39
/ea
Drill America 1/2" X 1/4" Pilots for Counterbore DEWPIL1/2X1/4
Drill America

1/2" X 1/4" Pilots for Counterbore

Zoro # G1742879
Mfr # DEWPIL1/2X1/4
product price:  $8.89
/ea
Drill America 5/16" X 1/8" Pilots for Counterbore DEWPIL5/16X1/8
Drill America

5/16" X 1/8" Pilots for Counterbore

Zoro # G1742556
Mfr # DEWPIL5/16X1/8
product price:  $9.65
/ea
Sold in mult. of 2 for $19.30
Hhip 1/4 X 9/32 High Speed Steel 3 Flute Solid  Pilot Counterbore 2007-0016
Hhip

1/4 X 9/32 High Speed Steel 3 Flute Solid Pilot Counterbore

Zoro # G2467938
Mfr # 2007-0016
product price:  $15.99
/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
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, 3/8" D, Carbide Tipped 56403
Super Tool

Counterbore, 3/8" D, Carbide Tipped

Zoro # G0330379
Mfr # 56403
product price:  $100.18
/ea
Scientific Cutting Tools Port Tool, MS16142, Reamer, 7/8-14 UNF MS16142-10R
Scientific Cutting Tools

Port Tool, MS16142, Reamer, 7/8-14 UNF

Zoro # G8444396
Mfr # MS16142-10R
product price:  $241.99
/ea
Scientific Cutting Tools Port Tool, MS16142, Solid, 7/16-20 UNF MS16142-4S
Scientific Cutting Tools

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

Zoro # G8129712
Mfr # MS16142-4S
product price:  $195.99
/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:  $552.99
/ea
Keo Counterbore, Fractional Inch, 4-1/2 in 902-000-016
Keo

Counterbore, Fractional Inch, 4-1/2 in

Zoro # G1107714
Mfr # 902-000-016
product price:  $71.19
/ea
Link 6MM HSS Se 6.30 X 9.52 Drill 10.71 Cbore 7.94 Shank 39.69 Oal 75-L2-523
Link

6MM HSS Se 6.30 X 9.52 Drill 10.71 Cbore 7.94 Shank 39.69 Oal

Zoro # G7643766
Mfr # 75-L2-523
product price:  $28.35
/ea
Link Ua4-5MM Metric Shcs HSS Counterbore 72-L2-512
Link

Ua4-5MM Metric Shcs HSS Counterbore

Zoro # G7643976
Mfr # 72-L2-512
product price:  $26.65
/ea
Super Tool Reduced Shank Counterbore, 1-7/16" D 52246
Super Tool

Reduced Shank Counterbore, 1-7/16" D

Zoro # G0331392
Mfr # 52246
product price:  $192.99
/ea
No Product Image Available
Keo

Counterbore Set, 7, Fractional Inch

Zoro # G621725273
Mfr # 902-000-293
product price:  $595.99
/ea
Super Tool Reduced Shank Counterbore, 19/32" D 52219
Super Tool

Reduced Shank Counterbore, 19/32" D

Zoro # G0331149
Mfr # 52219
product price:  $97.99
/ea
Porting Tools & Counterbores (995 items)
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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.

Related Categories

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Precision Measuring ToolsMeasuring and Layout ToolsWrenchesCutting and Shaping ToolsSockets & Ratchets
high speed steelmetric shcscounterbores - flat bottom1-1/4 in counterboremetric counterbore
scientific cutting toolspilot counterbore5/8 counterboremetric counterbore setcounter bore pilot

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