Steel Pipe Crosses | McMaster-Carr

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	Material Material

Iron

Steel

	For Pipe Material For Pipe Material

Steel

	Shape Shape

	Cross

	Pipe Size Pipe Size

	Thread Type Thread Type

NPT

NPTF

	Finish Finish

Black Coated

Galvanized

Zinc-Phosphate Coated

	For Pipe Schedule For Pipe Schedule


40	80

160

	For Use With For Use With

	Connection Style Connection Style

Threaded

Socket Connect

	Maximum Pressure Maximum Pressure

	Type Type

	Connector

	Pressure Class Pressure Class

150

300

3000

	Connection Type Connection Type

	Pipe

	Gender Gender

Female

	Maximum Steam Pressure Maximum Steam Pressure

	Specifications Met Specifications Met

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

DFARS Specialty Metals
COTS-Exempt

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	Fabrication Fabrication

Forged

Machined

	Socket Connect Type Socket Connect Type

	Weld

	Dash Size Dash Size

	Socket Depth Socket Depth

3/8"

1/2"

5/8"

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74 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 Iron and Steel Threaded Pipe Fittings

Use these fittings for low-pressure applications in noncorrosive environments.

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

Cross Connectors

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class: 150
Specifications Met: ASME B16.3, UL Listed, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 40 steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/8	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	00000000	000000
1/4	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	000000000	00000
3/8	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	00000000	00000
1/2	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	000000000	00000
3/4	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	000000000	00000
1	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	000000000	00000
1 1/4	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	000000000	00000
1 1/2	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	000000000	00000
2	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	000000000	00000
2 1/2	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	00000000	000000
3	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	00000000	000000
4	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	00000000	000000

Low-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

The galvanized finish on these fittings provides fair corrosion resistance. Fittings are for use in low-pressure applications.

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

Cross Connectors

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class: 150
Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 40 galvanized steel
Flanges: Use Class 150 galvanized steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/8	150 psi @ 72° F	150 psi @ 350° F	Galvanized Iron	00000000	000000
1/4	150 psi @ 72° F	150 psi @ 350° F	Galvanized Iron	00000000	00000
3/8	150 psi @ 72° F	150 psi @ 350° F	Galvanized Iron	00000000	00000
1/2	150 psi @ 72° F	150 psi @ 350° F	Galvanized Iron	00000000	00000
3/4	150 psi @ 72° F	150 psi @ 350° F	Galvanized Iron	00000000	00000
1	150 psi @ 72° F	150 psi @ 350° F	Galvanized Iron	00000000	00000
1 1/4	150 psi @ 72° F	150 psi @ 350° F	Galvanized Iron	00000000	00000
1 1/2	150 psi @ 72° F	150 psi @ 350° F	Galvanized Iron	00000000	00000
2	150 psi @ 72° F	150 psi @ 350° F	Galvanized Iron	00000000	000000
2 1/2	150 psi @ 72° F	150 psi @ 350° F	Galvanized Iron	00000000	000000
3	150 psi @ 72° F	150 psi @ 350° F	Galvanized Iron	00000000	000000
4	150 psi @ 72° F	150 psi @ 350° F	Galvanized Iron	00000000	000000

High-Pressure Iron and Steel Threaded Pipe Fittings

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

Phosphate-coated and zinc-phosphate-coated fittings offer some corrosion resistance, but aren't intended for corrosive environments.

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

Cross Connectors

For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
Pressure Class: 3000
Specifications Met: ASME B16.11, ASTM A105, 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		Each
1/8	02	3,000 psi @ 72° F	300 psi @ 360° F	Zinc-Phosphate-Coated Steel	00000000	000000
1/4	04	3,000 psi @ 72° F	300 psi @ 360° F	Zinc-Phosphate-Coated Steel	0000000	00000
3/8	06	3,000 psi @ 72° F	300 psi @ 360° F	Zinc-Phosphate-Coated Steel	0000000	00000
1/2	08	3,000 psi @ 72° F	300 psi @ 360° F	Zinc-Phosphate-Coated Steel	0000000	00000
3/4	12	3,000 psi @ 72° F	300 psi @ 360° F	Zinc-Phosphate-Coated Steel	0000000	00000
1	16	3,000 psi @ 72° F	300 psi @ 360° F	Zinc-Phosphate-Coated Steel	0000000	00000
1 1/4	20	3,000 psi @ 72° F	300 psi @ 360° F	Zinc-Phosphate-Coated Steel	0000000	00000
1 1/2	24	3,000 psi @ 72° F	300 psi @ 360° F	Zinc-Phosphate-Coated Steel	0000000	000000
2	32	3,000 psi @ 72° F	300 psi @ 360° F	Zinc-Phosphate-Coated Steel	0000000	000000
2 1/2	40	3,000 psi @ 72° F	300 psi @ 360° F	Zinc-Phosphate-Coated Steel	00000000	000000
3	48	3,000 psi @ 72° F	300 psi @ 360° F	Zinc-Phosphate-Coated Steel	00000000	000000
4	64	3,000 psi @ 72° F	300 psi @ 360° F	Zinc-Phosphate-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 Pressure Class 3000 fittings, they have excellent strength to handle high-pressure applications.

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

Cross Connectors

For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
Pressure Class: 3000
Specifications Met: ASME B1.20.1, ASME B16.11, ASTM A105
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	000000
1 1/2	24	3,000 psi @ 72° F	300 psi @ 360° F	00000000	000000
2	32	3,000 psi @ 72° F	300 psi @ 360° F	00000000	000000

Compact Extreme-Pressure Steel Threaded Pipe Fittings

These fittings are strong enough to handle extreme pressures, yet small enough to fit into cramped spaces. They are galvanized steel, which has fair corrosion resistance.

NPTF (Dryseal) threads are compatible with NPT threads.

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

Cross Connectors

For Use With: Air, Hydraulic Fluid, Water
Specifications Met: ASTM A576

NPTF Female
Pipe Size	Dash Size	Max. Pressure		Each
1/8	02	5,000 psi @ 72° F	000000000	000000
1/4	04	5,000 psi @ 72° F	000000000	00000
3/8	06	4,500 psi @ 72° F	000000000	00000
1/2	08	3,000 psi @ 72° F	000000000	00000
3/4	12	3,000 psi @ 72° F	000000000	00000
1	16	1,800 psi @ 72° F	000000000	00000
1 1/4	20	1,500 psi @ 72° F	000000000	000000

Compact Precision Extreme-Pressure Steel Threaded Pipe Fittings

Made to tighter tolerances than other steel pipe fittings, these are also known as instrumentation fittings. They are strong enough to handle extreme pressures, yet small enough to fit into cramped spaces. They are galvanized steel, which has fair corrosion resistance.

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

Cross Connectors

For Use With: Air, Natural Gas, Water, Hydraulic Fluid
Specifications Met:
1/8-3/8, 1/2 Pipe Sizes: ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179
3/4 Pipe Size: ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A108

NPT Female
Pipe Size	Dash Size	Max. Pressure		Each
1/8	02	5,900 psi @ 72° F	00000000	000000
1/4	04	6,000 psi @ 72° F	00000000	00000
3/8	06	5,400 psi @ 72° F	00000000	00000
1/2	08	5,450 psi @ 72° F	00000000	00000
3/4	12	3,700 psi @ 72° F	00000000	00000

Medium-Pressure Iron and Steel Threaded Pipe Fittings

With better strength than our low-pressure iron and steel pipe fittings, these can handle medium-pressure applications. They are for use in noncorrosive environments.

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

Cross Connectors

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class : 300
Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 or 600 steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
1/2	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
3/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000

High-Pressure Socket-Connect Steel Unthreaded Pipe Fittings

Socket-connect fittings are easier to weld than butt-weld fittings because the fitting doesn’t need to align perfectly to the pipe. Slide pipe into the socket and weld for a strong, permanent connection. Fittings have heavy duty construction that stands up to high-pressure applications. They are for use in noncorrosive environments.

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

Cross Connectors

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class : 3000
Specifications Met: ASTM A105, ASME B16.11
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 and 600 steel

Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/8	3,000 psi @ 72° F	Not Rated	Steel	000000000	000000
1/4	3,000 psi @ 72° F	Not Rated	Steel	000000000	00000
1/2	3,000 psi @ 72° F	Not Rated	Steel	000000000	00000
3/4	3,000 psi @ 72° F	Not Rated	Steel	000000000	00000
1	3,000 psi @ 72° F	Not Rated	Steel	000000000	00000
1 1/4	3,000 psi @ 72° F	Not Rated	Steel	000000000	00000
1 1/2	3,000 psi @ 72° F	Not Rated	Steel	000000000	00000
2	3,000 psi @ 72° F	Not Rated	Steel	000000000	00000
2 1/2	3,000 psi @ 72° F	Not Rated	Steel	000000000	000000
3	3,000 psi @ 72° F	Not Rated	Steel	000000000	000000