Class 250 Pipe Fittings | McMaster-Carr

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184 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.

Medium-Pressure Brass and Bronze Threaded Pipe Fittings

Choose these fittings when you need better strength than our low-pressure brass and bronze pipe fittings. They offer good corrosion resistance.

Union connectors separate into three pieces so you can access your line without unthreading pipe connections.

Straight Connectors

For Use With: Air, Natural Gas, Oil, Water
Pressure Class: 250
Specifications Met: ASME B1.20.1, ASME B16.15, ASTM B584
Pipe Nipples and Pipe: Use Schedule 80 brass

NPT Female
Pipe Size	Max. Pressure	Material		Each
1/4	400 psi @ 72° F	Brass	0000000	000000
3/8	400 psi @ 72° F	Brass	0000000	00000
1/2	400 psi @ 72° F	Brass	0000000	00000
3/4	400 psi @ 72° F	Brass	0000000	00000
1	400 psi @ 72° F	Brass	0000000	000000
1 1/2	400 psi @ 72° F	Brass	0000000	000000
2	400 psi @ 72° F	Brass	0000000	000000

Union Straight Connectors

Exploded View

For Use With: Air, Natural Gas, Oil, Water
Pressure Class: 250
Specifications Met: ASME B1.20.1, ASME B16.15, ASTM B584
Pipe Nipples and Pipe: Use Schedule 80 brass

NPT Female
Pipe Size	Max. Pressure	Material		Each
1/4	400 psi @ 72° F	Brass	0000000	000000
3/8	400 psi @ 72° F	Brass	0000000	00000
1/2	400 psi @ 72° F	Brass	0000000	00000
3/4	400 psi @ 72° F	Brass	0000000	00000
1	400 psi @ 72° F	Brass	0000000	000000
1 1/4	400 psi @ 72° F	Brass	0000000	000000
1 1/2	400 psi @ 72° F	Brass	0000000	000000
2	400 psi @ 72° F	Brass	0000000	000000

90° Elbow Connectors

For Use With: Air, Natural Gas, Oil, Water
Pressure Class: 250
Specifications Met: ASME B1.20.1, ASME B16.15, ASTM B584
Pipe Nipples and Pipe: Use Schedule 80 brass

NPT Female
Pipe Size	Max. Pressure	Material		Each
1/4	400 psi @ 72° F	Brass	0000000	000000
3/8	400 psi @ 72° F	Brass	0000000	00000
1/2	400 psi @ 72° F	Brass	0000000	00000
3/4	400 psi @ 72° F	Brass	0000000	00000
1	400 psi @ 72° F	Brass	0000000	00000
1 1/4	400 psi @ 72° F	Brass	0000000	000000
1 1/2	400 psi @ 72° F	Brass	0000000	000000
2	400 psi @ 72° F	Brass	0000000	000000

45° Elbow Connectors

For Use With: Air, Natural Gas, Oil, Water
Pressure Class: 250
Specifications Met: ASME B1.20.1, ASME B16.15, ASTM B584
Pipe Nipples and Pipe: Use Schedule 80 brass

NPT Female
Pipe Size	Max. Pressure	Material		Each
3/4	400 psi @ 72° F	Brass	0000000	000000
1	400 psi @ 72° F	Brass	0000000	000000

Tee Connectors

For Use With: Air, Natural Gas, Oil, Water
Pressure Class: 250
Specifications Met: ASME B1.20.1, ASME B16.15, ASTM B584
Pipe Nipples and Pipe: Use Schedule 80 brass

NPT Female
Pipe Size	Max. Pressure	Material		Each
1/4	400 psi @ 72° F	Brass	0000000	000000
3/8	400 psi @ 72° F	Brass	0000000	00000
1/2	400 psi @ 72° F	Brass	0000000	00000
3/4	400 psi @ 72° F	Brass	0000000	00000
1	400 psi @ 72° F	Brass	0000000	000000
1 1/4	400 psi @ 72° F	Brass	0000000	000000
1 1/2	400 psi @ 72° F	Brass	0000000	000000
2	400 psi @ 72° F	Brass	0000000	000000

Cross Connectors

For Use With: Air, Natural Gas, Oil, Water
Pressure Class: 250
Specifications Met: ASME B1.20.1, ASME B16.15, ASTM B584
Pipe Nipples and Pipe: Use Schedule 80 brass

NPT Female
Pipe Size	Max. Pressure	Material		Each
1/2	400 psi @ 72° F	Brass	0000000	0000000
3/4	400 psi @ 72° F	Brass	0000000	000000
1	400 psi @ 72° F	Brass	0000000	000000

Caps

For Use With: Air, Natural Gas, Oil, Water
Pressure Class: 250
Specifications Met: ASME B1.20.1, ASME B16.15, ASTM B584
Pipe Nipples and Pipe: Use Schedule 80 brass

NPT Female
Pipe Size	Max. Pressure	Material		Each
1/2	400 psi @ 72° F	Brass	0000000	000000
3/4	400 psi @ 72° F	Brass	0000000	00000
1	400 psi @ 72° F	Brass	0000000	000000
2	400 psi @ 72° F	Brass	0000000	000000

Thick-Wall Brass Threaded Pipe Nipples and Pipe

A thick wall gives this Schedule 80 pipe the strength to handle high-pressure applications. It is brass for good corrosion resistance. Pipe is seamless so it has a smooth interior for unrestricted flow.

Fully threaded pipe is also known as a close nipple; it is threaded on each end to the center.

Fully Threaded

For Use With: Air, Natural Gas, Oil, Water
Specifications Met: ASME B1.20.1, ASTM B43, ASTM B687
Fittings: Use Class 250 brass

Pipe Size	Lg.	Thread Type	Construction		Each
1/8	3/4"	NPT	Seamless	0000000	00000
1/4	7/8"	NPT	Seamless	0000000	0000
3/8	1"	NPT	Seamless	0000000	0000
1/2	1 1/8"	NPT	Seamless	0000000	0000
3/4	1 3/8"	NPT	Seamless	0000000	00000
1	1 1/2"	NPT	Seamless	0000000	00000
1 1/4	1 5/8"	NPT	Seamless	0000000	00000
1 1/2	1 3/4"	NPT	Seamless	0000000	00000
2	2"	NPT	Seamless	0000000	00000
2 1/2	2 1/2"	NPT	Seamless	00000000	000000

Threaded on Both Ends

For Use With: Air, Natural Gas, Oil, Water
Specifications Met: ASME B1.20.1, ASTM B43, ASTM B687; except
Lengths greater than 12": ASTM B43
Fittings: Use Class 250 brass

1/8 Pipe Size
Lg.	Thread Type	Construction		Each
1 1/2"	NPT	Seamless	0000000	00000
2"	NPT	Seamless	0000000	0000
2 1/2"	NPT	Seamless	0000000	0000
3"	NPT	Seamless	0000000	0000
3 1/2"	NPT	Seamless	0000000	0000
4"	NPT	Seamless	0000000	00000
5"	NPT	Seamless	0000000	00000
6"	NPT	Seamless	0000000	00000
8"	NPT	Seamless	0000000	00000
10"	NPT	Seamless	00000000	00000
12"	NPT	Seamless	00000000	00000
18"	NPT	Seamless	0000000	00000
24"	NPT	Seamless	0000000	00000
36"	NPT	Seamless	0000000	000000
48"	NPT	Seamless	0000000	000000
60"	NPT	Seamless	0000000	000000
72"	NPT	Seamless	0000000	000000
1/4 Pipe Size
1 1/2"	NPT	Seamless	0000000	0000
2"	NPT	Seamless	0000000	0000
2 1/2"	NPT	Seamless	0000000	0000
3"	NPT	Seamless	0000000	00000
3 1/2"	NPT	Seamless	0000000	00000
4"	NPT	Seamless	0000000	00000
5"	NPT	Seamless	0000000	00000
6"	NPT	Seamless	0000000	00000
8"	NPT	Seamless	0000000	00000
10"	NPT	Seamless	00000000	00000
12"	NPT	Seamless	00000000	00000
18"	NPT	Seamless	0000000	00000
24"	NPT	Seamless	0000000	00000
36"	NPT	Seamless	0000000	000000
48"	NPT	Seamless	0000000	000000
60"	NPT	Seamless	0000000	000000
72"	NPT	Seamless	0000000	000000
3/8 Pipe Size
1 1/2"	NPT	Seamless	0000000	0000
2"	NPT	Seamless	0000000	00000
2 1/2"	NPT	Seamless	0000000	00000
3"	NPT	Seamless	0000000	00000
3 1/2"	NPT	Seamless	0000000	00000
4"	NPT	Seamless	0000000	00000
5"	NPT	Seamless	0000000	00000
6"	NPT	Seamless	0000000	00000
8"	NPT	Seamless	0000000	00000
10"	NPT	Seamless	00000000	00000
12"	NPT	Seamless	00000000	00000
18"	NPT	Seamless	0000000	00000
24"	NPT	Seamless	0000000	000000
36"	NPT	Seamless	0000000	000000
48"	NPT	Seamless	0000000	000000
60"	NPT	Seamless	0000000	000000
72"	NPT	Seamless	0000000	000000
1/2 Pipe Size
1 1/2"	NPT	Seamless	0000000	00000
2"	NPT	Seamless	0000000	00000
2 1/2"	NPT	Seamless	0000000	00000
3"	NPT	Seamless	0000000	00000
3 1/2"	NPT	Seamless	0000000	00000
4"	NPT	Seamless	0000000	00000
5"	NPT	Seamless	0000000	00000
6"	NPT	Seamless	0000000	00000
8"	NPT	Seamless	0000000	00000
10"	NPT	Seamless	00000000	00000
12"	NPT	Seamless	00000000	00000
18"	NPT	Seamless	0000000	000000
24"	NPT	Seamless	0000000	000000
36"	NPT	Seamless	0000000	000000
48"	NPT	Seamless	0000000	000000
60"	NPT	Seamless	0000000	000000
72"	NPT	Seamless	0000000	000000
3/4 Pipe Size
1 1/2"	NPT	Seamless	0000000	00000
2"	NPT	Seamless	0000000	00000
2 1/2"	NPT	Seamless	0000000	00000
3"	NPT	Seamless	0000000	00000
3 1/2"	NPT	Seamless	0000000	00000
4"	NPT	Seamless	0000000	00000
5"	NPT	Seamless	0000000	00000
6"	NPT	Seamless	0000000	00000
8"	NPT	Seamless	0000000	00000
10"	NPT	Seamless	00000000	00000
12"	NPT	Seamless	00000000	00000
18"	NPT	Seamless	0000000	000000
24"	NPT	Seamless	0000000	000000
36"	NPT	Seamless	0000000	000000
48"	NPT	Seamless	0000000	000000
60"	NPT	Seamless	0000000	000000
72"	NPT	Seamless	0000000	000000
1 Pipe Size
2"	NPT	Seamless	0000000	00000
2 1/2"	NPT	Seamless	0000000	00000
3"	NPT	Seamless	0000000	00000
3 1/2"	NPT	Seamless	0000000	00000
4"	NPT	Seamless	0000000	00000
5"	NPT	Seamless	0000000	00000
6"	NPT	Seamless	0000000	00000
8"	NPT	Seamless	00000000	00000
10"	NPT	Seamless	00000000	000000
12"	NPT	Seamless	00000000	000000
18"	NPT	Seamless	0000000	000000
24"	NPT	Seamless	0000000	000000
36"	NPT	Seamless	0000000	000000
48"	NPT	Seamless	0000000	000000
60"	NPT	Seamless	0000000	000000
72"	NPT	Seamless	0000000	000000
1 1/4 Pipe Size
2"	NPT	Seamless	0000000	00000
2 1/2"	NPT	Seamless	0000000	00000
3"	NPT	Seamless	0000000	00000
3 1/2"	NPT	Seamless	0000000	00000
4"	NPT	Seamless	0000000	00000
5"	NPT	Seamless	0000000	00000
6"	NPT	Seamless	0000000	00000
8"	NPT	Seamless	00000000	000000
10"	NPT	Seamless	00000000	000000
12"	NPT	Seamless	00000000	000000
1 1/2 Pipe Size
2"	NPT	Seamless	0000000	00000
2 1/2"	NPT	Seamless	0000000	00000
3"	NPT	Seamless	0000000	00000
3 1/2"	NPT	Seamless	0000000	00000
4"	NPT	Seamless	0000000	00000
5"	NPT	Seamless	0000000	00000
6"	NPT	Seamless	0000000	000000
8"	NPT	Seamless	00000000	000000
12"	NPT	Seamless	00000000	000000
2 Pipe Size
2 1/2"	NPT	Seamless	0000000	00000
3"	NPT	Seamless	0000000	00000
3 1/2"	NPT	Seamless	0000000	00000
4"	NPT	Seamless	0000000	00000
5"	NPT	Seamless	0000000	000000
6"	NPT	Seamless	0000000	000000
8"	NPT	Seamless	00000000	000000
12"	NPT	Seamless	00000000	000000
2 1/2 Pipe Size
3"	NPT	Seamless	00000000	000000
3 1/2"	NPT	Seamless	00000000	000000
4"	NPT	Seamless	00000000	000000
6"	NPT	Seamless	00000000	000000
8"	NPT	Seamless	00000000	000000
12"	NPT	Seamless	00000000	000000