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	Drive Style Drive Style	Show

	Square

	Drive Style Drive Style	Hide


Hex	External Hex

Square

	Pipe Size Pipe Size

	Thread Type Thread Type

NPT

NPTF

	Material Material

	For Pipe Material For Pipe Material

Steel

Aluminum

Brass

	For Use With For Use With

	Plug Construction Plug Construction

Solid

Hollow

	Maximum Pressure Maximum Pressure

	Length Length

	For Pipe Schedule For Pipe Schedule

	40

	Class Class

125

150

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

DFARS Specialty Metals
COTS-Exempt

	Specifications Met Specifications Met

	Maximum Steam Pressure Maximum Steam Pressure

125 psi @ 350° F

150 psi @ 350° F

150 psi @ 360° F

	Finish Finish

Galvanized

Black Coated

	Weight Weight

	Fabrication Fabrication

Cast

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59 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.

Plugs with Square Drive

For Use With: Air, Steam, Oil, Water, Natural Gas
Class:
Steel: 150
Iron: 125
Pipe Nipples and Pipe: Use Schedule 40 steel

NPT Male
Pipe Size	Plug Construction	Max. Pressure	Max. Steam Pressure	Material		Each
1/8	Solid	150 psi @ 72° F	150 psi @ 350° F	Steel	000000000	00000
1/4	Solid	150 psi @ 72° F	150 psi @ 350° F	Steel	000000000	000
3/8	Solid	150 psi @ 72° F	150 psi @ 350° F	Steel	000000000	000
1/2	Solid	150 psi @ 72° F	150 psi @ 350° F	Steel	000000000	000
3/4	Solid	150 psi @ 72° F	150 psi @ 350° F	Steel	000000000	000
1	Solid	150 psi @ 72° F	150 psi @ 350° F	Steel	000000000	0000
1 1/4	Solid	150 psi @ 72° F	150 psi @ 350° F	Steel	000000000	0000
1 1/2	Solid	150 psi @ 72° F	150 psi @ 350° F	Steel	000000000	00000
2	Solid	150 psi @ 72° F	150 psi @ 350° F	Steel	000000000	00000
2 1/2	Hollow	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
3	Hollow	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
3 1/2	Hollow	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
4	Hollow	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	000000

Low-Pressure Cast Iron Threaded Pipe Fittings

Made of cast iron, these fittings are brittle and can be quickly opened with the strike of a sledge hammer in case of an emergency. They are also known as Class 125 fittings. Use in noncorrosive environments.

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

Plugs with Square Drive

For Use With: Air, Steam, Oil, Water, Natural Gas
Class: 125
Specifications Met: ASME B16.4, ASTM A126, UL Listed, ASME B16.14, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 40 steel

NPT Male
Pipe Size	Plug Construction	Max. Pressure	Max. Steam Pressure	Material		Each
1	Solid	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
1 1/4	Solid	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	0000
1 1/2	Solid	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	0000
2	Solid	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	0000
2 1/2	Solid	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
3	Solid	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
4	Solid	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000

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.

Plugs with Square Drive

For Use With: Air, Steam, Oil, Water, Natural Gas
Class: 150
Specifications Met: SAE J531
Pipe Nipples and Pipe: Use Schedule 40 steel
Flanges: Use Class 150 galvanized steel

NPT Male
Pipe Size	Plug Construction	Max. Pressure	Max. Steam Pressure	Material		Each
1/8	Solid	150 psi @ 72° F	150 psi @ 350° F	Galvanized Steel	00000000	00000
1/4	Solid	150 psi @ 72° F	150 psi @ 350° F	Galvanized Steel	00000000	000
3/8	Solid	150 psi @ 72° F	150 psi @ 350° F	Galvanized Steel	00000000	000
1/2	Solid	150 psi @ 72° F	150 psi @ 350° F	Galvanized Steel	00000000	000
3/4	Solid	150 psi @ 72° F	150 psi @ 350° F	Galvanized Steel	00000000	000
1	Solid	150 psi @ 72° F	150 psi @ 350° F	Galvanized Steel	00000000	0000
1 1/4	Solid	150 psi @ 72° F	150 psi @ 350° F	Galvanized Steel	00000000	0000
1 1/2	Solid	150 psi @ 72° F	150 psi @ 350° F	Galvanized Steel	00000000	00000
2	Solid	150 psi @ 72° F	150 psi @ 350° F	Galvanized Steel	00000000	00000

Low-Pressure Galvanized Steel Threaded Pipe Fittings with Sealant

The male threads on these fittings have a sealant applied for extra leak protection. Fittings are made of galvanized steel, which has fair corrosion resistance. Also known as Class 150 fittings, they are for use in low-pressure applications.

NPTF (Dryseal) threads are compatible with NPT threads.

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

Plugs with Square Drive

For Use With: Air, Steam, Oil, Water, Natural Gas
Class: 150
Specifications Met: SAE J531
Pipe Nipples and Pipe: Use Schedule 40 galvanized steel
Flanges: Use Class 150 galvanized steel

NPTF Male
Pipe Size	Plug Construction	Max. Pressure	Max. Steam Pressure		Each
1/8	Solid	150 psi @ 72° F	150 psi @ 360° F	0000000	00000
1/4	Solid	150 psi @ 72° F	150 psi @ 360° F	0000000	000
3/8	Solid	150 psi @ 72° F	150 psi @ 360° F	0000000	000
1/2	Solid	150 psi @ 72° F	150 psi @ 360° F	0000000	000
3/4	Solid	150 psi @ 72° F	150 psi @ 360° F	0000000	000
1	Solid	150 psi @ 72° F	150 psi @ 360° F	0000000	0000

Low-Pressure Brass and Bronze Threaded Pipe Fittings

Use these fittings in low-pressure flow applications. They have good corrosion resistance. Fittings rated for use with drinking water meet NSF/ANSI 61 safety standards.

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

Plugs with Square Drive

For Use With: Air, Drinking Water, Natural Gas, Oil
Class: 125
Specifications Met: ASME B1.20.1, ASME B16.15, NSF/ANSI 61
Pipe Nipples and Pipe: Use Schedule 40 brass
Flanges: Use Class 150 brass

NPT Male
Pipe Size	Plug Construction	Max. Pressure	Material		Each
1/2	Solid	200 psi @ 72° F	Brass	00000000	00000
3/4	Solid	200 psi @ 72° F	Brass	00000000	0000
1	Solid	200 psi @ 72° F	Brass	00000000	00000
1 1/4	Solid	200 psi @ 72° F	Brass	00000000	00000
1 1/2	Solid	200 psi @ 72° F	Brass	00000000	00000
2	Solid	200 psi @ 72° F	Brass	00000000	00000
2 1/2	Solid	200 psi @ 72° F	Brass	00000000	000000
3	Solid	200 psi @ 72° F	Brass	00000000	000000
4	Solid	200 psi @ 72° F	Brass	00000000	000000

Low-Pressure Brass Threaded Pipe Fittings with Sealant

The male threads on these fittings have a sealant applied for extra protection against leaks. Also known as Class 125 fittings, they are built for use in low-pressure applications. They are brass for good corrosion resistance.

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

Plugs with Square Drive

For Use With: Air, Natural Gas, Oil, Water
Class: 125
Specifications Met: ASME B1.20.1, ASME B16.15
Pipe Nipples and Pipe: Use Schedule 40 brass
Flanges: Use Class 150 brass

NPT Male
Pipe Size	Plug Construction	Max. Pressure		Each
1/2	Solid	200 psi @ 72° F	0000000	000000
3/4	Solid	200 psi @ 72° F	0000000	00000
1	Solid	200 psi @ 72° F	0000000	00000
1 1/2	Solid	200 psi @ 72° F	0000000	00000
2	Solid	200 psi @ 72° F	0000000	00000

Low-Pressure Aluminum Threaded Pipe Fittings

In addition to being lightweight, these aluminum fittings offer good corrosion resistance. Use them in low-pressure flow applications. To prevent cracking, do not tighten more than a 1/4-turn past hand tight.

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

Plugs with Square Drive

For Use With: Air, Oil, Water
Class: 150
Pipe Nipples and Pipe: Use Schedule 40 aluminum
Flanges: Use Class 125 aluminum

NPT Male
Pipe Size	Plug Construction	Max. Pressure		Each
3/8	Solid	150 psi @ 72° F	000000000	00000
1/2	Solid	150 psi @ 72° F	000000000	0000
3/4	Solid	150 psi @ 72° F	000000000	0000
1	Solid	150 psi @ 72° F	000000000	0000
1 1/4	Solid	150 psi @ 72° F	000000000	00000
1 1/2	Solid	150 psi @ 72° F	000000000	00000
2	Solid	150 psi @ 72° F	000000000	00000
2 1/2	Solid	150 psi @ 72° F	000000000	00000
3	Solid	150 psi @ 72° F	000000000	00000
4	Solid	150 psi @ 72° F	000000000	00000