Stainless Steel Square-Head Plugs

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	Material Material

304 Stainless Steel

316 Stainless Steel

	Pipe Size Pipe Size

	Thread Type Thread Type

NPT

BSPT

	For Pipe Material For Pipe Material

304 Stainless Steel

316 Stainless Steel

316/316L Stainless Steel

304/304L Stainless Steel

	Class Class

150

3000

	Maximum Pressure Maximum Pressure

150 psi @ 72° F

2,500 psi @ 72° F

3,000 psi @ 72° F

	For Use With For Use With

	System of Measurement System of Measurement

Inch

Metric

	Plug Construction Plug Construction

Solid

Hollow

	For Pipe Schedule For Pipe Schedule


40	80

	Length Length

	Specifications Met Specifications Met

ASTM

ANSI/MSS

	Fabrication Fabrication

Heat Treated

Forged

	Maximum Steam Pressure Maximum Steam Pressure

1,900 psi @ 350° F

2,800 psi @ 350° F

150 psi @ 360° F

	Dash Size Dash Size

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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.

Low-Pressure Stainless Steel Threaded Pipe Fittings

Use these fittings in a low-pressure pipe line.

Fittings that meet ANSI/MSS SP-114 adhere to high-quality standards for heat treating, material thickness, and marking. 304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.

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

Plugs with External Square Drive

For Use With: Air, Natural Gas, Oil, Steam, Water
Class: 150
Fabrication: Heat Treated
Specifications Met:
NPT: ANSI/MSS SP-114, ASTM A351
BSPT: ANSI/MSS SP-114
Pipe Nipples and Pipe: Use Schedule 40 stainless steel
Flanges: Use Class 150 stainless steel

304 Stainless Steel
Pipe Size	Plug Construction	Max. Pressure	Max. Steam Pressure		Each
NPT Male
1/8	Solid	150 psi @ 72° F	150 psi @ 360° F	00000000	00000
1/4	Solid	150 psi @ 72° F	150 psi @ 360° F	00000000	0000
3/8	Solid	150 psi @ 72° F	150 psi @ 360° F	00000000	0000
1/2	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	0000
3/4	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	0000
1	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	0000
1 1/4	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	00000
1 1/2	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	00000
2	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	00000
2 1/2	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	00000
3	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	00000
4	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	00000
BSPT Male
1/8	Solid	150 psi @ 72° F	150 psi @ 360° F	00000000	0000
1/4	Solid	150 psi @ 72° F	150 psi @ 360° F	00000000	0000
3/8	Solid	150 psi @ 72° F	150 psi @ 360° F	00000000	0000
1/2	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	0000
3/4	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	0000
1	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	0000
1 1/2	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	00000
2	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	00000
316 Stainless Steel
NPT Male
1/8	Solid	150 psi @ 72° F	150 psi @ 360° F	00000000	0000
1/4	Solid	150 psi @ 72° F	150 psi @ 360° F	00000000	0000
3/8	Solid	150 psi @ 72° F	150 psi @ 360° F	00000000	0000
1/2	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	0000
3/4	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	0000
1	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	0000
1 1/4	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	00000
1 1/2	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	00000
2	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	00000
2 1/2	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	00000
3	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	00000
4	Hollow	150 psi @ 72° F	150 psi @ 360° F	00000000	000000

Low-Pressure Stainless Steel
Threaded Pipe Fittings with Sealant

The male threads on these fittings have a sealant applied for extra leak protection. Also known as Class 150 fittings, they are built for use in low-pressure applications. They adhere to high-quality standards for heat treating, material thickness, and marking.

304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.

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

Plugs with External Square Drive

For Use With: Air, Natural Gas, Oil, Steam, Water
Class: 150
Fabrication: Heat Treated
Specifications Met: ANSI/MSS SP-114, ASTM A351
Pipe Nipples and Pipe: Use Schedule 40 stainless steel
Flanges: Use Class 150 stainless steel

304 Stainless Steel
Pipe Size	Plug Construction	Max. Pressure	Max. Steam Pressure		Each
NPT Male
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	0000
3/8	Solid	150 psi @ 72° F	150 psi @ 360° F	0000000	0000
1/2	Hollow	150 psi @ 72° F	150 psi @ 360° F	0000000	0000
3/4	Hollow	150 psi @ 72° F	150 psi @ 360° F	0000000	0000
1	Hollow	150 psi @ 72° F	150 psi @ 360° F	0000000	00000
1 1/4	Hollow	150 psi @ 72° F	150 psi @ 360° F	0000000	00000
1 1/2	Hollow	150 psi @ 72° F	150 psi @ 360° F	0000000	00000
2	Hollow	150 psi @ 72° F	150 psi @ 360° F	0000000	00000
316 Stainless Steel
NPT Male
1/8	Solid	150 psi @ 72° F	150 psi @ 360° F	0000000	0000
1/4	Solid	150 psi @ 72° F	150 psi @ 360° F	0000000	0000
3/8	Solid	150 psi @ 72° F	150 psi @ 360° F	0000000	0000
1/2	Hollow	150 psi @ 72° F	150 psi @ 360° F	0000000	0000
3/4	Hollow	150 psi @ 72° F	150 psi @ 360° F	0000000	00000
1	Hollow	150 psi @ 72° F	150 psi @ 360° F	0000000	00000
1 1/4	Hollow	150 psi @ 72° F	150 psi @ 360° F	0000000	00000
1 1/2	Hollow	150 psi @ 72° F	150 psi @ 360° F	0000000	00000
2	Hollow	150 psi @ 72° F	150 psi @ 360° F	0000000	00000

High-Pressure Stainless Steel Threaded Pipe Fittings

Use these heavy duty fittings in high-pressure flow applications.

304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.

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

Plugs with External Square Drive

For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
Class: 3000
Specifications Met: ASTM A182
Pipe Nipples and Pipe: Use Schedule 80 stainless steel

304 Stainless Steel
Pipe Size	Dash Size	Plug Construction	Max. Pressure	Max. Steam Pressure		Each
NPT Male
1/8	02	Solid	2,500 psi @ 72° F	1,900 psi @ 350° F	00000000	00000
1/4	04	Solid	2,500 psi @ 72° F	1,900 psi @ 350° F	00000000	0000
3/8	06	Solid	2,500 psi @ 72° F	1,900 psi @ 350° F	00000000	0000
1/2	08	Solid	2,500 psi @ 72° F	1,900 psi @ 350° F	00000000	0000
3/4	12	Solid	2,500 psi @ 72° F	1,900 psi @ 350° F	00000000	00000
1	16	Solid	2,500 psi @ 72° F	1,900 psi @ 350° F	00000000	00000
1 1/4	20	Solid	2,500 psi @ 72° F	1,900 psi @ 350° F	00000000	00000
1 1/2	24	Solid	2,500 psi @ 72° F	1,900 psi @ 350° F	00000000	00000
2	32	Solid	2,500 psi @ 72° F	1,900 psi @ 350° F	00000000	00000
2 1/2	40	Solid	2,500 psi @ 72° F	1,900 psi @ 350° F	00000000	00000
3	48	Solid	2,500 psi @ 72° F	1,900 psi @ 350° F	00000000	000000
316 Stainless Steel
NPT Male
1/8	02	Solid	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	0000
1/4	04	Solid	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	0000
3/8	06	Solid	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	0000
1/2	08	Solid	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	0000
3/4	12	Solid	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	00000
1	16	Solid	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	00000
1 1/4	20	Solid	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	00000
1 1/2	24	Solid	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	00000
2	32	Solid	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	00000
2 1/2	40	Solid	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	00000
3	48	Solid	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	000000

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How to Identify and Measure Fittings

Low-Pressure Stainless Steel Threaded Pipe Fittings

Low-Pressure Stainless SteelThreaded Pipe Fittings with Sealant

High-Pressure Stainless Steel Threaded Pipe Fittings

Low-Pressure Stainless Steel Threaded Pipe Fittings

Low-Pressure Stainless SteelThreaded Pipe Fittings with Sealant

High-Pressure Stainless Steel Threaded Pipe Fittings

Low-Pressure Stainless Steel
Threaded Pipe Fittings with Sealant

Low-Pressure Stainless Steel
Threaded Pipe Fittings with Sealant