1.38" Tubing | McMaster-Carr

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Pipe Size

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Stainless Steel

Pipe Schedule

Threading

Threaded on Both Ends

Threaded on One End

OD

ID

1/64" to 11/16"

1/64" to 23/32"

1/64" to 1 1/8"

1/64" to 1 1/4"

1/64" to 1 1/2"

1/64" to 1 3/4"

1/32" to 13/16"

1/32" to 15/16"

1/32" to 1 1/16"

1/32" to 1 3/8"

1/32" to 1 5/8"

1/32" to 1 3/4"

1/32" to 2 1/2"

1/32" to 2 7/8"

5/32" to 13/16"

2 1/2" to 5 1/2"

1 mm to 13.5 mm

Fitting Type

Shape

Fitting Material

Stainless Steel

Wall Thickness

Thread Type

Flange Material

Stainless Steel

System of Measurement

Fitting Connection

Spec Image

For Use With

For Fitting Schedule

Connects To

Gender

Construction

RoHS

Compliant with Exemptions

Export Control Classification Number (ECCN)

DFARS Specialty Metals

REACH

Specifications Met

Fed. Spec. WW-N-351

Flexibility

Continuous Flex

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396 Products

How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

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Pipe and Pipe Fittings

Standard-Wall Stainless Steel
Unthreaded Pipe Nipples and Pipe

Typically used with standard-wall and low-pressure stainless steel unthreaded pipe fittings.

Standard-Wall Stainless Steel
Threaded Pipe Nipples and Pipe

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Typically used with low-pressure stainless steel threaded pipe fittings.

Standard-Wall Stainless Steel Threaded
Pipe Nipple and Pipe Assortments

Keep a variety of lengths of pipe and pipe nipples on hand for areas where corrosion is a concern.

Standard-Wall Stainless Steel Threaded
Pipe Nipples and Pipe with Sealant

Typically used with low-pressure stainless steel threaded pipe fittings.

Standard-Wall Aluminum
Unthreaded Pipe Nipples and Pipe

Typically used with standard-wall aluminum unthreaded pipe fittings.

Standard-Wall Aluminum
Threaded Pipe Nipples and Pipe

Typically used with low-pressure aluminum threaded pipe fittings.

Standard-Wall Steel Threaded
Pipe Nipples and Pipe

Also known as Schedule 40, this steel pipe is designed for low-pressure applications.

Standard-Wall Steel Threaded
Pipe Nipple and Pipe Assortments

Assortments contain threaded pipe in various lengths.

Standard-Wall Galvanized Steel
Threaded Pipe Nipples and Pipe

Made of galvanized steel, this Schedule 40 pipe has fair corrosion resistance and is designed for low-pressure applications.

Standard-Wall Galvanized Steel Threaded
Pipe Nipple and Pipe Assortments

Assortments contain threaded pipe in various lengths.

Standard-Wall Steel Unthreaded
Pipe Nipples and Pipe

Typically used with standard-wall and low-pressure iron and steel unthreaded pipe fittings. Also known as Schedule 40.

Standard-Wall Brass Threaded
Pipe Nipples and Pipe

Typically used with low-pressure brass and bronze threaded pipe fittings.

Standard-Wall Plastic Pipe for Water

Connect this pipe to standard-wall plastic pipe fittings for a variety of residential and commercial low-pressure plumbing and water supply applications.

Clear-View Standard-Wall Plastic Pipe for Water

See inside your line with this clear pipe, which works in a variety of residential and commercial low-pressure plumbing and water supply applications.

Semi-Flexible Plastic Pipe for Water

Semi-Flexible Plastic Pipe for Water

Connect to barbed plastic pipe fittings with a clamp. Pipe isn't as bendable as soft tubing, but can still bend around objects, resulting in fewer connection points in your line. Fewer connection points not only shortens installation time, but also allows for smoother flow through the line.

Aluminum

Architectural 6063 Aluminum Round Tubes

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More corrosion resistant and easier to form than multipurpose 6061 aluminum, 6063 is primarily used for exterior railings, decorative trim, and door frames.

Easy-to-Form Marine-Grade 5086 Aluminum Tubes

5086 aluminum is used on ships, oil rigs, tanks, and pressure vessels because of its excellent saltwater resistance and formability.

Conduit and Fittings

Thin-Wall (EMT) Stainless Steel Conduit

Thin-Wall (EMT) Stainless Steel Conduit

The most corrosion-resistant thin-wall conduit we offer, use this along walls and ceilings in food-processing and chemical plants.

Thin-Wall (EMT) Steel Conduit

Also known as electrical metallic tubing (EMT), this conduit has thin walls that easily bend with a conduit bender and can be cut with a hacksaw.

Rigid PVC Conduit

This is also known as PVC Schedule 40 conduit.

Rigid Stainless Steel Conduit

Use in food-processing and chemical plants—this is the most corrosion resistant thick-wall conduit we offer.

Continuous-Flex Liquid-Tight Plastic Conduit

Continuous-Flex Liquid-Tight Plastic Conduit

Also known as Type A, this conduit meets the demands of continuous motion while sealing out liquid when used with liquid-tight fittings.

Shipping Tubes

Round Cut-to-Length Shipping Tubes

Close these tubes with a cap on each end.

Round Adjustable-Length Shipping Tubes

Adjust these tubes by twisting the two halves. A hexagonal end prevents rolling.

Water- and Steam-Resistant Metal-Detectable
EPDM Gaskets for Quick-Clamp Tube Fittings

Water- and Steam-Resistant Metal-Detectable
EPDM Gaskets for Quick-Clamp Tube Fittings

Water- and Steam-Resistant Metal-Detectable EPDM Gaskets for Quick-Clamp Tube Fittings

To prevent contamination in your line, these gaskets set off metal detectors if a piece as small as 1 mm wears off. They’re EPDM, so the tight seal they form in stainless steel quick-clamp tube fittings withstands moist environments.

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)