Schedule 160 Unions | McMaster-Carr

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	Pipe Size Pipe Size

1/8

	Thread Type Thread Type

NPT

	Type Type	Show

Union

	Type Type	Hide

	Material Material

Steel

	Connection Style Connection Style

Threaded

	For Pipe Material For Pipe Material

Galvanized Steel

Steel

	For Use With For Use With

	Class Class

3000

	Shape Shape

	Straight

	For Pipe Schedule For Pipe Schedule	Show

	160

	For Pipe Schedule For Pipe Schedule	Hide


10	40

80	160

XXH

	Finish Finish

Black Coated

Galvanized

	Maximum Pressure Maximum Pressure

3,000 psi @ 72° F

3,000 psi @ 100° F

	Connection Type Connection Type

	Pipe

	Body Shape Body Shape


Hex	Hex with Lugs

	Gender Gender

Female

	Fabrication Fabrication

Forged

	Maximum Steam Pressure Maximum Steam Pressure

300 psi @ 360° F

1,500 psi @ 700° F

	Specifications Met Specifications Met

ANSI/ASME

ASTM

MSS

	Length Length

	Dash Size Dash Size

	Hex Width Hex Width

	Maximum Temperature Maximum Temperature

500° to 999° F

	Gasket Material Gasket Material

Graphite-Filled 304 Stainless
Steel

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35 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.

High-Pressure Iron and Steel Threaded Pipe Fittings

These fittings can stand up to high-pressure applications. Use them in noncorrosive environments.

Union connectors separate into three pieces so you can access your line without unthreading pipe connections. Union connectors with gasket provide extra leak protection.

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

Union Straight Connectors

Exploded View

For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
Class: 3000
Specifications Met: ASTM A105, ANSI/ASME B1.20.1, MSS SP-83
Pipe Nipples and Pipe: Use Schedule 160 steel
Flanges: Use Class 1500 steel

NPT Female
Pipe Size	Dash Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/8	02	3,000 psi @ 72° F	300 psi @ 360° F	Black-Coated Steel	00000000	000000
1/4	04	3,000 psi @ 72° F	300 psi @ 360° F	Black-Coated Steel	0000000	00000
3/8	06	3,000 psi @ 72° F	300 psi @ 360° F	Black-Coated Steel	0000000	00000
1/2	08	3,000 psi @ 72° F	300 psi @ 360° F	Black-Coated Steel	0000000	00000
3/4	12	3,000 psi @ 72° F	300 psi @ 360° F	Black-Coated Steel	0000000	00000
1	16	3,000 psi @ 72° F	300 psi @ 360° F	Black-Coated Steel	0000000	00000
1 1/4	20	3,000 psi @ 72° F	300 psi @ 360° F	Black-Coated Steel	0000000	00000
1 1/2	24	3,000 psi @ 72° F	300 psi @ 360° F	Black-Coated Steel	0000000	00000
2	32	3,000 psi @ 72° F	300 psi @ 360° F	Black-Coated Steel	0000000	00000
2 1/2	40	3,000 psi @ 72° F	300 psi @ 360° F	Black-Coated Steel	00000000	00000
3	48	3,000 psi @ 72° F	300 psi @ 360° F	Black-Coated Steel	00000000	000000

Union Straight Connectors with Gasket

Exploded View

For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
Specifications Met: MSS SP-83, ASTM A105, ANSI/ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 160 steel
Flanges: Use Class 1500 steel

NPT Female
Pipe Size	Dash Size	Max. Pressure	Max. Steam Pressure	Material	Gasket Material		Each
1/2	08	3,000 psi @ 100° F	1,500 psi @ 700° F	Black-Coated Steel	Graphite-Filled 304 Stainless Steel	0000000	000000
3/4	12	3,000 psi @ 100° F	1,500 psi @ 700° F	Black-Coated Steel	Graphite-Filled 304 Stainless Steel	0000000	00000
1	16	3,000 psi @ 100° F	1,500 psi @ 700° F	Black-Coated Steel	Graphite-Filled 304 Stainless Steel	0000000	00000
1 1/4	20	3,000 psi @ 100° F	1,500 psi @ 700° F	Black-Coated Steel	Graphite-Filled 304 Stainless Steel	0000000	000000
1 1/2	24	3,000 psi @ 100° F	1,500 psi @ 700° F	Black-Coated Steel	Graphite-Filled 304 Stainless Steel	0000000	000000
2	32	3,000 psi @ 100° F	1,500 psi @ 700° F	Black-Coated Steel	Graphite-Filled 304 Stainless Steel	0000000	000000

Union Straight Connectors with Lugs

Exploded View

For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
Class: 3000
Specifications Met: ASTM A105, ANSI/ASME B1.20.1, MSS SP-83
Pipe Nipples and Pipe: Use Schedule 160 steel
Flanges: Use Class 1500 steel

NPT Female
Pipe Size	Dash Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/2	08	3,000 psi @ 72° F	300 psi @ 360° F	Black-Coated Steel	00000000	000000
3/4	12	3,000 psi @ 72° F	300 psi @ 360° F	Black-Coated Steel	00000000	00000
1	16	3,000 psi @ 72° F	300 psi @ 360° F	Black-Coated Steel	00000000	00000
1 1/4	20	3,000 psi @ 72° F	300 psi @ 360° F	Black-Coated Steel	00000000	000000
1 1/2	24	3,000 psi @ 72° F	300 psi @ 360° F	Black-Coated Steel	00000000	000000
2	32	3,000 psi @ 72° F	300 psi @ 360° F	Black-Coated Steel	00000000	000000
2 1/2	40	3,000 psi @ 72° F	300 psi @ 360° F	Black-Coated Steel	00000000	000000
3	48	3,000 psi @ 72° F	300 psi @ 360° F	Black-Coated Steel	00000000	000000
4	64	3,000 psi @ 72° F	300 psi @ 360° F	Black-Coated Steel	00000000	000000

High-Pressure Galvanized Steel Threaded Pipe Fittings

A galvanized finish gives these fittings better corrosion resistance than our plain steel high-pressure fittings. Also known as Class 3000 fittings, they have excellent strength to handle high-pressure applications.

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

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

Union Straight Connectors

Exploded View

For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
Class: 3000
Specifications Met: ASTM A105, ANSI/ASME B1.20.1, MSS SP-83
Pipe Nipples and Pipe: Use Schedule 160 steel

NPT Female
Pipe Size	Dash Size	Max. Pressure	Max. Steam Pressure		Each
1/8	02	3,000 psi @ 72° F	300 psi @ 360° F	00000000	000000
1/4	04	3,000 psi @ 72° F	300 psi @ 360° F	00000000	00000
3/8	06	3,000 psi @ 72° F	300 psi @ 360° F	00000000	00000
1/2	08	3,000 psi @ 72° F	300 psi @ 360° F	00000000	00000
3/4	12	3,000 psi @ 72° F	300 psi @ 360° F	00000000	00000
1	16	3,000 psi @ 72° F	300 psi @ 360° F	00000000	00000
1 1/4	20	3,000 psi @ 72° F	300 psi @ 360° F	00000000	00000
1 1/2	24	3,000 psi @ 72° F	300 psi @ 360° F	00000000	00000
2	32	3,000 psi @ 72° F	300 psi @ 360° F	00000000	00000

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