McMaster-Carr

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	Shape Shape


Tee	Wye

	Pipe Size Pipe Size

	Thread Type Thread Type

NPT

BSPT

	Material Material

Brass

Plastic

Stainless Steel

	Connection Style Connection Style

Threaded

Push to Connect

Compression

	For Use With For Use With	Show

Nitrogen

	For Use With For Use With	Hide

Warning: Products have one, but not necessarily all, of the selected characteristics.

	Maximum Pressure Maximum Pressure

	Gender Gender

Female

Male

	Type Type


Connector	Adapter

	Connection Type Connection Type


Pipe	Tube

	Tee Style Tee Style


Inline	Right Angle

	System of Measurement System of Measurement

Inch

Metric

	For Tube OD For Tube OD

	Maximum Steam Pressure Maximum Steam Pressure

1,500 psi @ 300° F

	Fabrication Fabrication

Forged

	Specifications Met Specifications Met

ANSI/ASME

DIN

	Thread Fabrication Thread Fabrication

Rolled

	For Tube Material For Tube Material

Plastic

Stainless Steel

	Maximum Vacuum Maximum Vacuum

29 in. of Hg @ 72° F

Not Rated

	Maximum Temperature Maximum Temperature

100° to 249° F

250° to 499° F

	Minimum Temperature Minimum Temperature

-49° to 0° F

25° F or greater

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

	Standard

	Color Color

	White

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76 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.

Precision Extreme-Pressure Brass Threaded Pipe Fittings

Also known as instrumentation fittings, these have the most precise threads and the tightest tolerances of all the brass pipe fittings we offer. The male threads are rolled for excellent strength in extreme-pressure applications. Fittings are brass for good corrosion resistance.

Inline tees are also known as branch tees. Right-angle tees are also known as run tees.

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

Tee Connectors, Female

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: ANSI/ASME B1.20.1, ANSI/ASME B31.1, ANSI/ASME B31.3

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure		Each
1/8	2,900 psi @ 72° F	1,500 psi @ 300° F	0000000	000000
1/4	3,000 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
3/8	2,700 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
1/2	2,500 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
3/4	2,000 psi @ 72° F	1,500 psi @ 300° F	0000000	00000

Tee Connectors, Male

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: ANSI/ASME B1.20.1, ANSI/ASME B31.1, ANSI/ASME B31.3

NPT Male
Pipe Size	Max. Pressure	Max. Steam Pressure		Each
1/8	5,000 psi @ 72° F	1,500 psi @ 300° F	00000000	000000
1/4	4,100 psi @ 72° F	1,500 psi @ 300° F	00000000	00000
3/8	4,000 psi @ 72° F	1,500 psi @ 300° F	00000000	00000
1/2	3,100 psi @ 72° F	1,500 psi @ 300° F	00000000	00000
3/4	3,400 psi @ 72° F	1,500 psi @ 300° F	00000000	000000

Inline Tee Adapters

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: ANSI/ASME B1.20.1, ANSI/ASME B31.1, ANSI/ASME B31.3

NPT Female × NPT Male
Pipe Size	Max. Pressure	Max. Steam Pressure		Each
1/8	2,900 psi @ 72° F	1,500 psi @ 300° F	0000000	000000
1/4	3,000 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
3/8	2,700 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
1/2	2,500 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
3/4	2,000 psi @ 72° F	1,500 psi @ 300° F	0000000	00000

Right-Angle Tee Adapters

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: ANSI/ASME B1.20.1, ANSI/ASME B31.1, ANSI/ASME B31.3

NPT Female × NPT Male
Pipe Size	Max. Pressure	Max. Steam Pressure		Each
1/8	2,900 psi @ 72° F	1,500 psi @ 300° F	0000000	000000
1/4	3,000 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
3/8	2,700 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
1/2	2,500 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
3/4	2,000 psi @ 72° F	1,500 psi @ 300° F	0000000	00000

Push-to-Connect Fittings for Plastic Tubing—High-Purity

For Use With: Air, Nitrogen, Water
Temperature Range: 32° to 100° F
Tubing: Use with polypropylene plastic

Also known as instant fittings, these 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 produced in a clean room and are double bagged to prevent dirt and moisture from contaminating the inside. They are polypropylene, which has excellent impact and abrasion resistance.

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

Inline Tee Adapters, Tube × Male Threaded Pipe

Inline tees are also known as branch tees.

BSPT Threads
For Tube OD	Pipe Size	Material	Color	Release Ring Color	Max. Pressure		Each
1/4"	1/8	Polypropylene Plastic	White	White	100 psi @ 72° F	0000000	000000
1/4"	1/4	Polypropylene Plastic	White	White	100 psi @ 72° F	0000000	00000
3/8"	1/4	Polypropylene Plastic	White	White	100 psi @ 72° F	0000000	00000
3/8"	3/8	Polypropylene Plastic	White	White	100 psi @ 72° F	0000000	00000
1/2"	3/8	Polypropylene Plastic	White	White	100 psi @ 72° F	0000000	00000
1/2"	1/2	Polypropylene Plastic	White	White	100 psi @ 72° F	0000000	00000
4mm	1/8	Polypropylene Plastic	White	Green	140 psi @ 72° F	0000000	00000
4mm	1/4	Polypropylene Plastic	White	Green	140 psi @ 72° F	00000000	00000
6mm	1/8	Polypropylene Plastic	White	Green	140 psi @ 72° F	0000000	00000
6mm	1/4	Polypropylene Plastic	White	Green	140 psi @ 72° F	0000000	00000
8mm	1/8	Polypropylene Plastic	White	Green	140 psi @ 72° F	00000000	00000
8mm	1/4	Polypropylene Plastic	White	Green	140 psi @ 72° F	0000000	00000
10mm	1/4	Polypropylene Plastic	White	Green	140 psi @ 72° F	00000000	00000
10mm	3/8	Polypropylene Plastic	White	Green	140 psi @ 72° F	00000000	00000
12mm	3/8	Polypropylene Plastic	White	Green	140 psi @ 72° F	00000000	00000
12mm	1/2	Polypropylene Plastic	White	Green	140 psi @ 72° F	00000000	00000

Right-Angle Tee Adapters, Tube × Male Threaded Pipe

BSPT Threads
For Tube OD, mm	Pipe Size	Material	Color	Release Ring Color	Max. Pressure		Each
4	1/8	Polypropylene Plastic	White	Green	140 psi @ 72° F	00000000	000000
4	1/4	Polypropylene Plastic	White	Green	140 psi @ 72° F	00000000	00000
6	1/8	Polypropylene Plastic	White	Green	140 psi @ 72° F	00000000	00000
6	1/4	Polypropylene Plastic	White	Green	140 psi @ 72° F	00000000	00000
8	1/8	Polypropylene Plastic	White	Green	140 psi @ 72° F	00000000	00000
8	1/4	Polypropylene Plastic	White	Green	140 psi @ 72° F	00000000	00000
10	1/4	Polypropylene Plastic	White	Green	140 psi @ 72° F	00000000	00000
10	3/8	Polypropylene Plastic	White	Green	140 psi @ 72° F	00000000	00000
12	3/8	Polypropylene Plastic	White	Green	140 psi @ 72° F	00000000	00000
12	1/2	Polypropylene Plastic	White	Green	140 psi @ 72° F	00000000	00000

Tee Connectors, Tube

For Tube OD	Material	Color	Release Ring Color	Max. Pressure	Mount Type	Mount. Fasteners Included		Each
1/8"	Polypropylene Plastic	White	White	100 psi @ 72° F	Screw On	No	00000000	000000
1/4"	Polypropylene Plastic	White	White	100 psi @ 72° F	Screw On	No	00000000	00000
3/8"	Polypropylene Plastic	White	White	100 psi @ 72° F	Screw On	No	00000000	00000
1/2"	Polypropylene Plastic	White	White	100 psi @ 72° F	Screw On	No	00000000	00000
4mm	Polypropylene Plastic	White	Green	140 psi @ 72° F	Screw On	No	0000000	00000
6mm	Polypropylene Plastic	White	Green	140 psi @ 72° F	Screw On	No	0000000	00000
8mm	Polypropylene Plastic	White	Green	140 psi @ 72° F	Screw On	No	0000000	00000
10mm	Polypropylene Plastic	White	Green	140 psi @ 72° F	Screw On	No	00000000	00000
12mm	Polypropylene Plastic	White	Green	140 psi @ 72° F	Screw On	No	00000000	00000

Wye Adapters, Male Threaded Pipe × Tube

BSPT Threads
Pipe Size	For Tube OD, mm	Material	Color	Release Ring Color	Max. Pressure		Each
1/8	4	Polypropylene Plastic	White	Green	140 psi @ 72° F	00000000	000000

Vibration-Resistant Compression
Fittings for Stainless Steel Tubing

For Use With: Acetylene, Air, Butane, Compressed Air, Cutting Oil, Diesel Fuel, Fuel Oil, Gasoline, Helium, Hydraulic Fluid (Petroleum Base), Kerosene, Mineral Oil, Natural Gas, Nitrogen, Propane, Soap Solutions
Temperature Range: -10° to 400° F
Tubing: Use with seamless 316Ti or 321 stainless steel
Specifications Met: DIN 3861

Instead of a metal sleeve (ferrule), these fittings have a rubber sleeve that cushions tubing and absorbs vibration to maintain a tight seal, even when connected to large pumps. However, rubber sleeves can’t withstand temperatures as high as metal ones. To create the strong seal, tighten the included nut. These fittings are made of 316 stainless steel, so they have excellent corrosion resistance. They’re also known as flareless fittings. All meet DIN 3861, which is an international standard for compression tube fitting specifications.

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

Tee Connectors, Tube

For Tube
OD, mm	Wall Thickness, mm	Material	Maximum Pressure		Each
6	1	316 Stainless Steel	4,500 psi @ 72° F	00000000	0000000
8	1	316 Stainless Steel	4,500 psi @ 72° F	00000000	000000
10	1	316 Stainless Steel	4,500 psi @ 72° F	00000000	000000
12	1.5	316 Stainless Steel	4,500 psi @ 72° F	00000000	000000
15	1.5	316 Stainless Steel	4,500 psi @ 72° F	00000000	000000
18	2	316 Stainless Steel	4,500 psi @ 72° F	00000000	000000
22	2.5	316 Stainless Steel	2,300 psi @ 72° F	00000000	000000
28	2.5	316 Stainless Steel	2,300 psi @ 72° F	00000000	000000
35	3	316 Stainless Steel	2,300 psi @ 72° F	00000000	000000
42	3.5	316 Stainless Steel	2,300 psi @ 72° F	00000000	000000

Nuts

Nut

For Tube
OD, mm	Wall Thickness, mm	Nut Material	Maximum Pressure		Each
6	1	316 Stainless Steel	4,500 psi @ 72° F	00000000	000000
8	1	316 Stainless Steel	4,500 psi @ 72° F	00000000	00000
10	1	316 Stainless Steel	4,500 psi @ 72° F	00000000	00000
12	1.5	316 Stainless Steel	4,500 psi @ 72° F	00000000	00000
15	1.5	316 Stainless Steel	4,500 psi @ 72° F	00000000	00000
18	2	316 Stainless Steel	4,500 psi @ 72° F	00000000	00000
22	2.5	316 Stainless Steel	2,300 psi @ 72° F	00000000	00000
28	2.5	316 Stainless Steel	2,300 psi @ 72° F	00000000	000000
35	3	316 Stainless Steel	2,300 psi @ 72° F	00000000	00000
42	3.5	316 Stainless Steel	2,300 psi @ 72° F	00000000	000000

Terms and Conditions and Privacy Policy

How to Identify and Measure Fittings

Precision Extreme-Pressure Brass Threaded Pipe Fittings

Push-to-Connect Fittings for Plastic Tubing—High-Purity

Vibration-Resistant CompressionFittings for Stainless Steel Tubing

Vibration-Resistant Compression
Fittings for Stainless Steel Tubing