Brass Metric Pipe | McMaster-Carr

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REACH Compliant

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

RoHS Compliant

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

DFARS Specialty Metals
COTS-Exempt

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134 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.

Standard-Wall Brass Threaded Pipe Nipples and Pipe

Also known as Schedule 40, this pipe is for use in low-pressure flow applications. It is brass, which offers good corrosion resistance. Pipe is seamless and has a smooth interior for unrestricted flow.

Fully threaded pipe is also known as a close nipple; it is threaded on each end to the center.

To adhere to safety standards for drinking water systems, use pipe that meets NSF/ANSI 61.

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

BSPT Fully Threaded

For Use With: Air, Natural Gas, Oil, Steam, Water
Specifications Met: ASME BS21, ASTM B687
Fittings: Use Class 125 brass or bronze
Flanges: Use Class 150 brass or bronze

Pipe Size	Lg.	Construction		Each
1/8	3/4"	Seamless	00000000	00000
1/4	7/8"	Seamless	00000000	0000
3/8	1"	Seamless	00000000	0000
1/2	1 1/8"	Seamless	00000000	0000
3/4	1 3/8"	Seamless	00000000	0000
1	1 1/2"	Seamless	00000000	00000
1 1/4	1 5/8"	Seamless	00000000	00000
1 1/2	1 3/4"	Seamless	00000000	00000
2	2"	Seamless	00000000	00000

BSPT Threaded on Both Ends

For Use With:
Lengths 6" and Shorter: Air, Natural Gas, Oil, Steam, Water
Lengths 12" and Longer: Air, Drinking Water, Natural Gas, Oil, Steam, Water
Specifications Met:
Lengths 6" and Shorter: ASME BS21, ASTM B687
Lengths 12" and Longer: ASME BS21, ASTM B687, NSF/ANSI 61
Fittings: Use Class 125 brass or bronze
Flanges: Use Class 150 brass or bronze

1/8 Pipe Size
Lg.	Construction		Each
1 1/2"	Seamless	00000000	00000
2"	Seamless	00000000	0000
3"	Seamless	00000000	0000
4"	Seamless	00000000	0000
6"	Seamless	00000000	0000
12"	Seamless	00000000	00000
36"	Seamless	00000000	00000
1/4 Pipe Size
1 1/2"	Seamless	00000000	0000
2"	Seamless	00000000	0000
3"	Seamless	00000000	0000
4"	Seamless	00000000	0000
6"	Seamless	00000000	00000
12"	Seamless	00000000	00000
36"	Seamless	00000000	00000
3/8 Pipe Size
1 1/2"	Seamless	00000000	0000
2"	Seamless	00000000	0000
3"	Seamless	00000000	0000
4"	Seamless	00000000	00000
6"	Seamless	00000000	00000
12"	Seamless	00000000	00000
36"	Seamless	00000000	00000
1/2 Pipe Size
1 1/2"	Seamless	00000000	0000
2"	Seamless	00000000	0000
3"	Seamless	00000000	00000
4"	Seamless	00000000	00000
6"	Seamless	00000000	00000
12"	Seamless	00000000	00000
36"	Seamless	00000000	000000
3/4 Pipe Size
1 1/2"	Seamless	00000000	0000
2"	Seamless	00000000	00000
3"	Seamless	00000000	00000
4"	Seamless	00000000	00000
6"	Seamless	00000000	00000
12"	Seamless	00000000	00000
36"	Seamless	00000000	000000

1 Pipe Size
Lg.	Construction		Each
2"	Seamless	00000000	000000
3"	Seamless	00000000	00000
4"	Seamless	00000000	00000
6"	Seamless	00000000	00000
12"	Seamless	00000000	00000
36"	Seamless	00000000	000000
1 1/4 Pipe Size
2"	Seamless	00000000	00000
3"	Seamless	00000000	00000
4"	Seamless	00000000	00000
6"	Seamless	00000000	00000
12"	Seamless	00000000	000000
36"	Seamless	00000000	000000
1 1/2 Pipe Size
2"	Seamless	00000000	00000
3"	Seamless	00000000	00000
4"	Seamless	00000000	00000
6"	Seamless	00000000	00000
12"	Seamless	00000000	000000
36"	Seamless	00000000	000000
2 Pipe Size
3"	Seamless	00000000	00000
4"	Seamless	00000000	00000
6"	Seamless	00000000	00000
12"	Seamless	00000000	000000
36"	Seamless	00000000	000000

BSPT × NPT Fully Threaded

For Use With:
Lengths 1 1/2" and Shorter: Air, Natural Gas, Oil, Steam, Water
Lengths 1 5/8" and Longer: Air, Drinking Water, Natural Gas, Oil, Steam, Water
Specifications Met:
Lengths 1 1/2" and Shorter: ASME BS21, ASTM B687
Lengths 1 5/8" and Longer: ASME BS21, ASTM B687, NSF/ANSI 61
Fittings: Use Class 125 brass or bronze
Flanges: Use Class 150 brass or bronze

Pipe Size	Lg.	Construction		Each
1/8	3/4"	Seamless	00000000	00000
1/4	7/8"	Seamless	00000000	0000
3/8	1"	Seamless	00000000	0000
1/2	1 1/8"	Seamless	00000000	0000
3/4	1 3/8"	Seamless	00000000	0000
1	1 1/2"	Seamless	00000000	00000
1 1/4	1 5/8"	Seamless	00000000	00000
1 1/2	1 3/4"	Seamless	00000000	00000
2	2"	Seamless	00000000	00000

BSPT × NPT Threaded on Both Ends

For Use With: See Table
Specifications Met: See Table
Fittings: Use Class 125 brass or bronze
Flanges: Use Class 150 brass or bronze

1/8 Pipe Size
Lg.	Construction	For Use With	Specifications Met		Each
1 1/2"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	00000
2"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	0000
3"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	0000
4"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	0000
6"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	00000
12"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	00000
36"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	00000
1/4 Pipe Size
1 1/2"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	0000
2"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	0000
3"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	0000
4"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	00000
6"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	00000
12"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	00000
36"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	00000
3/8 Pipe Size
1 1/2"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	0000
2"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	0000
3"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	0000
4"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	00000
6"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	00000
12"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	00000
36"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	000000
1/2 Pipe Size
1 1/2"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	0000
2"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	0000
3"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	00000
4"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	00000
6"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	00000
12"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	00000
36"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	000000
3/4 Pipe Size
1 1/2"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	00000
2"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	00000
3"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	00000
4"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	00000
6"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	00000
12"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	00000
36"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	000000
1 Pipe Size
2"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	00000
3"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	00000
4"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	00000
6"	Seamless	Air, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687	00000000	00000
12"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	00000
36"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	000000
1 1/2 Pipe Size
2"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	00000
3"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	00000
4"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	00000
6"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	00000
12"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	000000
36"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	000000
1 1/4 Pipe Size
2"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	00000
3"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	00000
4"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	00000
6"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	00000
12"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	000000
36"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	000000
2 Pipe Size
3"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	00000
4"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	00000
6"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	000000
12"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	000000
36"	Seamless	Air, Drinking Water, Natural Gas, Oil, Steam, Water	ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61	00000000	000000