Steel Tube Couplings | McMaster-Carr

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	Material Material

Stainless
Steel

	For Tube Material For Tube Material

	Pipe Size Pipe Size

1/8
1/4
3/8
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
3 1/2
4
5
6
8

	Thread Type Thread Type

	Connection Style Connection Style

Quick Disconnect

O-Ring Face Seal

	Type Type


Adapter	Connector

Clamp	Reducer

Reducing Adapter	Union

	Shape Shape


Straight	Manifold

	For Use With For Use With

	Gender Gender

	Connection Type Connection Type


Tube	Pipe

Hose

	System of Measurement System of Measurement

	For Tube OD For Tube OD

	Quick-Disconnect Component Quick-Disconnect Component


Plug	Socket

Plug and Socket Set

	Coupling Size Coupling Size

	Quick-Disconnect Shape Quick-Disconnect Shape

	Industrial
	Open Flow
	Snap-Tite H- Shape
	International Standard ISO Minimal- Spill
	International Standard ISO Series B
	ARO
	Tru-Flate
	European
	High- Pressure Minimal-Spill
	Lincoln
	Japanese
	Pioneer
	Schrader
	International Standard ISO Series A
	Ring Lock
	High- Pressure Thread Lock
	Compact

	Maximum Pressure Maximum Pressure

15 psi @ 72° F

25 psi @ 72° F

50 psi @ 72° F

75 psi @ 72° F

100 psi @ 72° F

125 psi @ 72° F

145 psi @ 72° F

150 psi @ 72° F

200 psi @ 72° F

230 psi @ 72° F

250 psi @ 72° F

300 psi @ 72° F

350 psi @ 72° F

500 psi @ 72° F

1,000 psi @ 72° F

1,100 psi @ 72° F

1,250 psi @ 72° F

1,400 psi @ 72° F

1,500 psi @ 72° F

1,700 psi @ 72° F

1,800 psi @ 72° F

2,000 psi @ 72° F

2,100 psi @ 72° F

2,200 psi @ 72° F

2,300 psi @ 72° F

2,400 psi @ 72 ° F

2,500 psi @ 72° F

2,600 psi @ 72° F

2,700 psi @ 72° F

2,900 psi @ 72° F

3,000 psi @ 72° F

3,100 psi @ 72° F

3,250 psi @ 72° F

3,300 psi @ 72° F

3,500 psi @ 72° F

3,600 psi @ 72° F

3,700 psi @ 72° F

3,750 psi @ 72° F

3,800 psi @ 72° F

4,000 psi @ 72° F

4,200 psi @ 72° F

4,400 psi @ 72° F

4,500 psi @ 72° F

4,900 psi @ 72° F

5,000 psi @ 72° F

5,500 psi @ 72° F

5,800 psi @ 72° F

6,000 psi @ 72° F

6,500 psi @ 72° F

6,700 psi @ 72° F

6,800 psi @ 72° F

7,200 psi @ 72° F

7,500 psi @ 72° F

9,100 psi @ 72° F

10,000 psi @ 72° F

11,600 psi @ 72° F

	For Hose ID For Hose ID

	Length Length

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

DFARS Specialty Metals
COTS-Exempt

	Sleeve Material Sleeve Material

	For Pipe Material For Pipe Material

	Plug Material Plug Material

	Hex Bushing Material Hex Bushing Material

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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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