1/8 Wyes | McMaster-Carr

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	Shape Shape


Wye	Double Wye

	Pipe Size Pipe Size	Show

1/8

	Pipe Size Pipe Size	Hide

1/16
1/8
1/4
3/8
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
4
6
8

	Thread Type Thread Type

	Connection Style Connection Style

Threaded

Push to Connect

	System of Measurement System of Measurement

Inch

Metric

	For Tube OD For Tube OD

	Material Material

Plastic

Stainless Steel

Brass

	Connection Type Connection Type


Pipe	Tube

	For Use With For Use With

	Type Type


Connector	Adapter

	Gender Gender

Female

Male

	Maximum Pressure Maximum Pressure

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	For Tube Material For Tube Material

Plastic

Rubber

	Specifications Met Specifications Met

	For Pipe Material For Pipe Material

304/304L Stainless Steel

304 Stainless Steel

316/316L Stainless Steel

316 Stainless Steel

	Release Ring Material Release Ring Material

Plastic

Brass

	Maximum Temperature Maximum Temperature

Less than 200° F

200° to 249° F

	Minimum Temperature Minimum Temperature

-49° to 0° F

25° F or greater

	Clarity Clarity

	Opaque

	Release Ring Color Release Ring Color

	Black		Gray
	Blue		Orange
	Green

	Maximum Vacuum Maximum Vacuum

28 in. of Hg @ 72° F

29 in. of Hg @ 72° F

Not Rated

	Push-to-Connect Type Push-to-Connect Type

	Standard

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44 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.

Low-Pressure Stainless Steel Threaded Pipe Fittings

Use these fittings in a low-pressure pipe line.

304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.

For technical drawings and 3-D models, click on a part number.

Wye Connectors

For Use With: Air, Natural Gas, Oil, Steam, Water
Class: 150
Fabrication: Heat Treated
Specifications Met: ASTM A351
Pipe Nipples and Pipe: Use Schedule 40 stainless steel
Flanges: Use Class 150 stainless steel

				304 Stainless Steel		316 Stainless Steel
Pipe Size	Max. Pressure	Max. Steam Pressure	Wye Angle		Each		Each
NPT Female
1/8	150 psi @ 72° F	150 psi @ 360° F	90°	00000000	00000	00000000	00000

High-Pressure Plated Brass Threaded Pipe Fittings

The plating on these brass fittings creates a shiny finish and provides extra protection in corrosive environments. Fittings have the strength to handle high-pressure applications.

Nickel-plated brass fittings provide better corrosion resistance than unplated brass fittings.

For technical drawings and 3-D models, click on a part number.

Wye Connectors

For Use With: Air, Natural Gas, Oil, Water

			Nickel-Plated Brass
Pipe Size	Max. Pressure	Wye Angle		Each
BSPP Female
1/8	2,170 psi @ 72° F	90°	00000000	00000

Wye Adapters

For Use With: Air, Natural Gas, Oil, Water

			Nickel-Plated Brass
Pipe Size	Max. Pressure	Wye Angle		Each
BSPP Male × BSPP Female
1/8	2,170 psi @ 72° F	90°	00000000	00000

Push-to-Connect Tube Fittings for Air

Temperature Range: 0° to 170° F
Tubing: Use with firm (Durometer 95A-45D) polyethylene plastic or polyurethane rubber
Specifications Met: ISO 14743, except polybutylene plastic fittings

Insert tubing into these fittings and an internal gripping ring and O-ring hold the tubing tight. They are also known as instant fittings. To disconnect, push on the release ring and pull the tubing out of the fitting. Fittings have good corrosion resistance.

Identification rings (sold separately) snap over the release ring so you can color-code your lines.

Clips (sold separately) align and organize your tubing and fittings.

Fittings with PTFE thread sealant offer extra protection against leaks.

BSPP and UN/UNF (SAE) male threads have a gasket to protect against leaks. UN/UNF (SAE) threads are also known as O-ring boss threads.

For technical drawings and 3-D models, click on a part number.

Wye Adapters (Intermittent Swivel), Male Threaded Pipe × Tube

Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.

NPT Threads
Pipe Size	For Tube OD	Pipe Connection Material	Tube Connection Material	Gasket Material	Color	Release Ring Color	Max. Pressure		Each
1/8	5/32"	Nickel-Plated Brass	Nylon Plastic	__	Black	Black	290 psi @ 72° F	00000000	00000
1/8	1/4"	Nickel-Plated Brass	Nylon Plastic	__	Black	Black	290 psi @ 72° F	00000000	0000
BSPP Threads
1/8	4mm	Nickel-Plated Brass	Nylon Plastic	Buna-N Rubber	Black	Black	290 psi @ 72° F	00000000	00000
1/8	6mm	Nickel-Plated Brass	Nylon Plastic	Buna-N Rubber	Black	Black	290 psi @ 72° F	00000000	00000
1/8	8mm	Nickel-Plated Brass	Nylon Plastic	Buna-N Rubber	Black	Black	290 psi @ 72° F	00000000	00000
BSPT Threads
1/8	4mm	Nickel-Plated Brass	Nylon Plastic	__	Black	Black	290 psi @ 72° F	00000000	0000
1/8	6mm	Nickel-Plated Brass	Nylon Plastic	__	Black	Black	290 psi @ 72° F	00000000	0000
1/8	8mm	Nickel-Plated Brass	Nylon Plastic	__	Black	Black	290 psi @ 72° F	00000000	0000

Identification Rings

For Tube OD	Material	Choose a Color		Each
5/32"	Nylon Plastic	Blue, Green, Red, White, Yellow	00000000	00000
1/4"	Nylon Plastic	Blue, Green, Red, White, Yellow	00000000	000

Clips

For Tube OD	Material	Color	Number of Clips		Each
5/32", 4mm	Nylon Plastic	Black	8	00000000	00000
3/16", 6mm, 1/4"	Nylon Plastic	Black	8	00000000	0000

Universal-Thread Push-to-Connect Tube Fittings for Air and Water

Male
Threads
with Gasket

Temperature Range: 0° to 175° F
Tubing: Use with firm (Durometer 85A-100A) nylon plastic or polyurethane rubber
Specifications Met: ISO 14743

Make lightweight connections without the hassle of matching the exact thread type—these fittings connect to NPT, NPTF, BSPP, BSPT, and other universal threads. With a nylon body and nickel-plated brass threads, these fittings are lighter than most metal fittings, and withstand corrosion better than plain brass threads. They also have a reusable gasket to guard against leaks. Connect the tube ends to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. To disconnect them, push the release ring and pull the tubing out of the fitting. These fittings are sometimes known as instant fittings. All meet ISO 14743, which is an international standard for push-to-connect fittings for plastic tubing.

For technical drawings and 3-D models, click on a part number.

Wye Adapter (Intermittent Swivel), Male Threaded Pipe × Tube

Wye Adapter
(Intermittent Swivel),
Male Threaded Pipe × Tube

Male
Threads
with Gasket

						Release Ring
Pipe Size	For Tube OD	Pipe Connection Material	Tube Connection Material	Gasket Material	Color	Material	Color	Maximum Pressure	Pkg. Qty.		Pkg.
BSPP, BSPT, NPT, NPTF, Universal Threads
1/8	5/32"	Nickel-Plated Brass	Nylon Plastic	Buna-N Rubber	Black	Plastic	Blue	250 psi @ 72° F	5	0000000	000000
1/8	1/4"	Nickel-Plated Brass	Nylon Plastic	Buna-N Rubber	Black	Plastic	Blue	250 psi @ 72° F	5	0000000	00000
1/8	5/16"	Nickel-Plated Brass	Nylon Plastic	Buna-N Rubber	Black	Plastic	Blue	250 psi @ 72° F	5	0000000	00000
1/8	4mm	Nickel-Plated Brass	Nylon Plastic	Buna-N Rubber	Black	Plastic	Black	250 psi @ 72° F	5	00000000	00000
1/8	6mm	Nickel-Plated Brass	Nylon Plastic	Buna-N Rubber	Black	Plastic	Black	250 psi @ 72° F	5	00000000	00000
1/8	8mm	Nickel-Plated Brass	Nylon Plastic	Buna-N Rubber	Black	Plastic	Black	250 psi @ 72° F	5	00000000	00000

Double Wye Adapter (Intermittent Swivel), Male Threaded Pipe × Tube

Double Wye Adapter
(Intermittent Swivel),
Male Threaded Pipe × Tube

Male
Threads
with Gasket

						Release Ring
Pipe Size	For Tube OD	Pipe Connection Material	Tube Connection Material	Gasket Material	Color	Material	Color	Maximum Pressure	Pkg. Qty.		Pkg.
BSPP, BSPT, NPT, NPTF, Universal Threads
1/8	5/32"	Nickel-Plated Brass	Nylon Plastic	Buna-N Rubber	Black	Plastic	Blue	250 psi @ 72° F	5	0000000	000000

Nickel-Plated Brass Push-to-Connect Tube Fittings for Air

For Use With: Air, Lubricated Air
Temperature Range: 0° to 140° F, except plugs and straight connectors are 32° to 140° F
Tubing: Fittings with Release Ring and Fittings with no Release Type: Use with firm or hard (Durometer 95A-60D) nylon plastic, polyethylene plastic or polyurethane rubber
Fittings with Release Sleeve: Use with firm or hard (Durometer 95A-60D) polyethylene plastic or polyurethane rubber

Made of nickel-plated brass, these fittings have better corrosion resistance than unplated brass fittings. Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. To disconnect, push on the release ring or sleeve and pull the tubing out of the fitting.

For technical drawings and 3-D models, click on a part number.

Wye Adapters, Male Threaded Pipe × Tube

BSPP Threads
Pipe Size	For Tube OD, mm	Material	Gasket Material	Release Type	Max. Pressure		Each
1/8	4	Nickel-Plated Brass	Buna-N Rubber	Ring	250 psi @ 72° F	00000000	000000
1/8	6	Nickel-Plated Brass	Buna-N Rubber	Ring	250 psi @ 72° F	00000000	00000

Moisture-Resistant Push-to-Connect Tube Fittings for Air and Water

For Use With: Air, Lubricated Air, Water,
except Manifolds with Swivel: Air, Water
Temperature Range: 32° to 100° F
Tubing: Use with firm (Durometer 90A-95A) nylon plastic or polyurethane rubber

These fittings won’t absorb moisture, so they’re good for water and high-humidity air applications. Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. To disconnect, push on the release ring and pull the tubing out of the fitting. They have good corrosion resistance.

Nickel-plated brass fittings have better corrosion resistance than unfinished brass fittings.

Fittings with thread sealant offer extra protection against leaks.

For technical drawings and 3-D models, click on a part number.

Wye Adapters (Intermittent Swivel), Male Threaded Pipe × Tube

Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.

NPT Threads
Pipe Size	For Tube OD	Tube Connection Material	Color	Release Ring Color	Max. Pressure	Mount Type	Mounting Fasteners Included	Features	Choose a Pipe Connection Material		Each
1/8	1/8"	Polybutylene Plastic	Gray	Orange	140 psi @ 72° F	Screw On	No	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1/8	5/32"	Polybutylene Plastic	Gray	Orange	140 psi @ 72° F	Screw On	No	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	0000
1/8	3/16"	Polybutylene Plastic	Gray	Orange	140 psi @ 72° F	Screw On	No	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	0000
1/8	1/4"	Polybutylene Plastic	Gray	Orange	140 psi @ 72° F	Screw On	No	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	0000
1/8	5/16"	Polybutylene Plastic	Gray	Orange	140 psi @ 72° F	Screw On	No	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	0000
BSPT Threads
1/8	4mm	Polybutylene Plastic	Gray	Gray	140 psi @ 72° F	Screw On	No	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	0000
1/8	6mm	Polybutylene Plastic	Gray	Gray	140 psi @ 72° F	Screw On	No	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	0000
1/8	8mm	Polybutylene Plastic	Gray	Gray	140 psi @ 72° F	Screw On	No	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	0000

Universal-Thread Moisture-Resistant Push-to-Connect Tube Fittings for Air and Water

Male
Threads
with Gasket

Temperature Range: 32° to 100° F
Tubing: Use with firm (Durometer 90A-95A) nylon plastic or polyurethane rubber

The threads on these fittings mate with NPT, NPTF (Dryseal), BSPT, and BSPP threads. The male threads have a gasket to protect against leaks. Fittings are moisture and corrosion resistant, so they’re good for water and humid air applications. Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. To disconnect, push on the release ring and pull the tubing out of the fitting.

For technical drawings and 3-D models, click on a part number.

Wye Adapters, Male Threaded Pipe × Tube

Male
Threads
with Gasket

Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.

					Release Ring
Pipe Size	For Tube OD	Pipe Material	Tube Material	Gasket Material	Material	Color	Max. Pressure	Swivel Type	Mount Type	Mounting Fasteners Included		Each
1/8	1/8"	Polybutylene Plastic	Brass	Buna-N Rubber	Plastic	Orange	140 psi @ 72° F	Intermittent	Screw On	No	000000000	00000
1/8	5/32"	Polybutylene Plastic	Brass	Buna-N Rubber	Plastic	Orange	140 psi @ 72° F	Intermittent	Screw On	No	000000000	0000
1/8	1/4"	Polybutylene Plastic	Brass	Buna-N Rubber	Plastic	Orange	140 psi @ 72° F	Intermittent	Screw On	No	000000000	0000
1/8	5/16"	Polybutylene Plastic	Brass	Buna-N Rubber	Plastic	Orange	140 psi @ 72° F	Intermittent	Screw On	No	000000000	0000
1/8	4mm	Polybutylene Plastic	Brass	Buna-N Rubber	Plastic	Gray	140 psi @ 72° F	Intermittent	Screw On	No	000000000	0000
1/8	6mm	Polybutylene Plastic	Brass	Buna-N Rubber	Plastic	Gray	140 psi @ 72° F	Intermittent	Screw On	No	000000000	0000
1/8	8mm	Polybutylene Plastic	Brass	Buna-N Rubber	Plastic	Gray	140 psi @ 72° F	Intermittent	Screw On	No	000000000	0000

Low-Temperature/High-Pressure D.O.T. Push-to-Connect Tube Fittings for Air

Temperature Range: -40° to 200° F
Tubing: Use with hard (Durometer 65D) nylon plastic
Specifications Met: D.O.T. FMVSS 571

In addition to handling low temperatures, these fittings can also withstand higher pressures than other push-to-connect D.O.T. fittings. Commonly used in air brake lines, they meet Department of Transportation FMVSS 571 safety standards. Fittings connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. Fittings have a built-in tube support that slips inside the tubing to prevent it from collapsing. To disconnect, push on the release ring and pull the tubing out of the fitting. Fittings are also known as instant fittings. They have good corrosion resistance.

For technical drawings and 3-D models, click on a part number.

Wye Adapters (Intermittent Swivel), Tube × Male Threaded Pipe

Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.

NPT Threads
Pipe Size	For Tube OD	Pipe Connection Material	Tube Connection Material	Color	Release Ring Material	Max. Pressure		Each
1/8	1/4"	Brass	Nylon Plastic	Black	Brass	250 psi @ 72° F	00000000	000000

Weld-Spatter-Resistant Push-to-Connect Tube Fittings for Air and Water

Temperature Range: 32° to 100° F
Tubing: Use with firm or hard (Durometer 90A-50D) nylon plastic or polyurethane rubber

Made of flame-resistant material, these fittings are good for welding and other applications where sparks occur. Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. To disconnect, push on the release ring and pull the tubing out of the fitting. They have good corrosion resistance.

Fittings with PTFE thread sealant offer extra protection against leaks.

For technical drawings and 3-D models, click on a part number.

Wye Adapters, Male Threaded Pipe × Tube

BSPT Threads
Pipe Size	For Tube OD, mm	Pipe Connection Material	Tube Connection Material	Color	Release Ring Color	Max. Pressure	Mount Type	Mounting Fasteners Included	Features		Each
1/8	6	Brass	Polybutylene Plastic	Black	Green	140 psi @ 72° F	Screw On	No	PTFE Thread Sealant	00000000	00000

Protective Covers

For Tube OD	Material		Each
6mm	Polybutylene Plastic	00000000	00000

Push-to-Connect Tube Fittings for Hot Drinking Water

Temperature Range: 35° to 200° F
Tubing: Use with hard polyethylene plastic
Specifications Met: NSF/ANSI 51, NSF/ANSI 61

Run hot water through these fittings at temperatures up to 200° F. Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. To disconnect, push on the release ring and pull the tubing out of the fitting. Fittings are nylon for excellent impact and abrasion resistance.

NPTF (Dryseal) threads are compatible with NPT threads.

For technical drawings and 3-D models, click on a part number.

Wye Adapters (Intermittent Swivel), Male Threaded Pipe × Tube

Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.

NPTF Threads
Pipe Size	For Tube OD	Material	Color	Release Ring Color	Max. Pressure	Swivel Type		Each
1/8	1/4"	Nylon Plastic	White	Gray	230 psi @ 72° F	Intermittent	00000000	00000