McMaster-Carr logo
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    124 Products
    About Pipe and Fittings
    industrial info icon

    Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

    Fitting Type

    Performance

    Low-Pressure Brass and Bronze Threaded Pipe Fittings

    Use these fittings in low-pressure flow applications. They have good corrosion resistance.
    Caps
    Chrome-Plated Brass—Chrome-plated brass pipe has a mirror-like finish and provides better corrosion resistance than nickel- and black zinc–plated brass.
    NSF/ANSI 61—To adhere to safety standards for drinking water systems, use pipe that meets NSF/ANSI 61.
    Pipe
    Size
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Food Industry
    Std.
    Each
    NPT Female
    Image of Product. Front orientation. Pipe and Fittings. Low-Pressure Brass and Bronze Threaded Pipe Fittings, Caps, Threaded Fitting Connection, Female.
    1/8
    		125
    		Brass200 psi @ 72° F—NSF/ANSI 61
    		4429K14900000
    1/8
    		125
    		Chrome-Plated Brass200 psi @ 72° F125 psi @ 400° F—9162K16100000
    1/4
    		125
    		Brass200 psi @ 72° F—NSF/ANSI 61
    		4429K1710000
    1/4
    		125
    		Chrome-Plated Brass200 psi @ 72° F125 psi @ 400° F—9162K16200000
    3/8
    		125
    		Brass200 psi @ 72° F—NSF/ANSI 61
    		4429K1420000
    3/8
    		125
    		Chrome-Plated Brass200 psi @ 72° F125 psi @ 400° F—9162K16300000
    1/2
    		125
    		Brass200 psi @ 72° F—NSF/ANSI 61
    		4429K1430000
    1/2
    		125
    		Chrome-Plated Brass200 psi @ 72° F125 psi @ 400° F—9162K16400000
    3/4
    		125
    		Brass200 psi @ 72° F—NSF/ANSI 61
    		4429K14400000
    3/4
    		125
    		Chrome-Plated Brass200 psi @ 72° F125 psi @ 400° F—9162K16500000
    1
    		125
    		Brass200 psi @ 72° F—NSF/ANSI 61
    		4429K14500000
    1
    		125
    		Chrome-Plated Brass200 psi @ 72° F125 psi @ 400° F—9162K16600000
    1 1/4
    		125
    		Brass200 psi @ 72° F—NSF/ANSI 61
    		4429K14600000
    1 1/2
    		125
    		Brass200 psi @ 72° F—NSF/ANSI 61
    		4429K14700000
    2
    		125
    		Brass200 psi @ 72° F—NSF/ANSI 61
    		4429K14800000
    2 1/2
    		125
    		Brass200 psi @ 72° F—NSF/ANSI 61
    		4429K457000000
    3
    		125
    		Brass200 psi @ 72° F—NSF/ANSI 61
    		4429K458000000
    4
    		125
    		Brass200 psi @ 72° F—NSF/ANSI 61
    		4429K459000000
     
    BSPT Female
    Image of Product. Front orientation. Pipe and Fittings. Low-Pressure Brass and Bronze Threaded Pipe Fittings, Caps, Female, Threaded Fitting Connection.
    1/8
    		125
    		Bronze200 psi @ 72° F125 psi @ 400° F—4978K1410000
    1/4
    		125
    		Bronze200 psi @ 72° F125 psi @ 400° F—4978K1420000
    3/8
    		125
    		Bronze200 psi @ 72° F125 psi @ 400° F—4978K1430000
    1/2
    		125
    		Bronze200 psi @ 72° F125 psi @ 400° F—4978K1440000
    3/4
    		125
    		Bronze200 psi @ 72° F125 psi @ 400° F—4978K14500000
    1
    		125
    		Bronze200 psi @ 72° F125 psi @ 400° F—4978K14600000
    1 1/4
    		125
    		Bronze200 psi @ 72° F125 psi @ 400° F—4978K14700000
    1 1/2
    		125
    		Bronze200 psi @ 72° F125 psi @ 400° F—4978K14800000
    2
    		125
    		Bronze200 psi @ 72° F125 psi @ 400° F—4978K14900000
     
    Square-Drive Plugs
    Image of Product. Male. Front orientation. Pipe and Fittings. Low-Pressure Brass and Bronze Threaded Pipe Fittings, Square-Drive Plugs, Threaded Fitting Connection, Male.

    Male

    NSF/ANSI 61—To adhere to safety standards for drinking water systems, use pipe that meets NSF/ANSI 61.
    Pipe
    Size
    Construction
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Food Industry
    Std.
    Each
    NPT Male
    1/2
    		Solid125
    		Brass200 psi @ 72° FNSF/ANSI 61
    		4429K191000000
    3/4
    		Solid125
    		Brass200 psi @ 72° FNSF/ANSI 61
    		4429K19200000
    1
    		Solid125
    		Brass200 psi @ 72° FNSF/ANSI 61
    		4429K19300000
    1 1/4
    		Solid125
    		Brass200 psi @ 72° FNSF/ANSI 61
    		4429K39600000
    1 1/2
    		Solid125
    		Brass200 psi @ 72° FNSF/ANSI 61
    		4429K19400000
    2
    		Solid125
    		Brass200 psi @ 72° FNSF/ANSI 61
    		4429K19500000
    2 1/2
    		Solid125
    		Brass200 psi @ 72° FNSF/ANSI 61
    		4429K397000000
    3
    		Solid125
    		Brass200 psi @ 72° FNSF/ANSI 61
    		4429K196000000
    4
    		Solid125
    		Brass200 psi @ 72° FNSF/ANSI 61
    		4429K197000000
     
    BSPT Male
    3/4
    		Solid125
    		Brass200 psi @ 72° FNSF/ANSI 61
    		4978K35200000
    1
    		Solid125
    		Brass200 psi @ 72° FNSF/ANSI 61
    		4978K35300000
    1 1/2
    		Solid125
    		Brass200 psi @ 72° FNSF/ANSI 61
    		4978K35400000
    2
    		Solid125
    		Brass200 psi @ 72° FNSF/ANSI 61
    		4978K35500000
     
    External-Square-Drive Plugs
    Chrome-Plated Brass—Chrome-plated brass pipe has a mirror-like finish and provides better corrosion resistance than nickel- and black zinc–plated brass.
    NSF/ANSI 61—To adhere to safety standards for drinking water systems, use pipe that meets NSF/ANSI 61.
    Pipe
    Size
    Construction
    Pressure
    Class
    Body
    Shape
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Food Industry
    Std.
    Each
    NPT Male
    Image of Product. Front orientation. Pipe and Fittings. Low-Pressure Brass and Bronze Threaded Pipe Fittings, External-Square-Drive Plugs, Threaded Fitting Connection, Male.
    1/8
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K31100000
    1/8
    		Solid125
    		SquareChrome-Plated Brass200 psi @ 72° F125 psi @ 400° F—9162K19100000
    1/4
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K3120000
    1/4
    		Solid125
    		SquareChrome-Plated Brass200 psi @ 72° F125 psi @ 400° F—9162K19200000
    3/8
    		Hollow125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K2810000
    3/8
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K3130000
    3/8
    		Solid125
    		SquareChrome-Plated Brass200 psi @ 72° F125 psi @ 400° F—9162K19300000
    1/2
    		Hollow125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K2820000
    1/2
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K3140000
    1/2
    		Solid125
    		SquareChrome-Plated Brass200 psi @ 72° F125 psi @ 400° F—9162K19400000
    3/4
    		Hollow125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K2830000
    3/4
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K31500000
    3/4
    		Solid125
    		SquareChrome-Plated Brass200 psi @ 72° F125 psi @ 400° F—9162K19500000
    1
    		Hollow125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K31600000
    1
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K28700000
    1
    		Solid125
    		SquareChrome-Plated Brass200 psi @ 72° F125 psi @ 400° F—9162K19600000
    1 1/4
    		Hollow125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K31700000
    1 1/4
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K28800000
    1 1/2
    		Hollow125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K31800000
    1 1/2
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K28900000
    2
    		Hollow125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K31900000
    2
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K29100000
    2 1/2
    		Hollow125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K28400000
    2 1/2
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K467000000
    3
    		Hollow125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K285000000
    3
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K468000000
    4
    		Hollow125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K286000000
    4
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4429K469000000
     
    BSPT Male
    Image of Product. Front orientation. Pipe and Fittings. Low-Pressure Brass and Bronze Threaded Pipe Fittings, External-Square-Drive Plugs, Threaded Fitting Connection, Male.
    1/8
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4978K3560000
    1/4
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4978K3570000
    3/8
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4978K3580000
    1/2
    		Hollow125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4978K36600000
    1/2
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4978K35900000
    3/4
    		Hollow125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4978K36700000
    3/4
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4978K36100000
    1
    		Hollow125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4978K36800000
    1
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4978K36200000
    1 1/4
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4978K36300000
    1 1/2
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4978K36400000
    2
    		Hollow125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4978K36900000
    2
    		Solid125
    		SquareBrass200 psi @ 72° F—NSF/ANSI 61
    		4978K36500000
     
    Locknuts
    Image of Product. Front orientation. Pipe Locknuts.
    NPSL Thread—NPSL (National Pipe Straight Locknut) threads are compatible with NPT threads.
    DIN 431—Locknuts that meet DIN 431 comply with international standards for pipe fitting locknut dimensions.
    Pipe
    Size
    Finished Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Specs.
    Met
    Each
    NPT Female
    1/8
    		Chrome-Plated Brass200 psi @ 72° F125 psi @ 400° F—9162K181000000
    1/4
    		Chrome-Plated Brass200 psi @ 72° F125 psi @ 400° F—9162K18200000
    3/8
    		Chrome-Plated Brass200 psi @ 72° F125 psi @ 400° F—9162K18300000
    1/2
    		Chrome-Plated Brass200 psi @ 72° F125 psi @ 400° F—9162K18400000
    3/4
    		Chrome-Plated Brass200 psi @ 72° F125 psi @ 400° F—9162K18500000
    1
    		Chrome-Plated Brass200 psi @ 72° F125 psi @ 400° F—9162K18600000
     
    NPSL Female
    1/8
    		Brass200 psi @ 72° F——4429K1210000
    1/4
    		Brass200 psi @ 72° F——4429K1220000
    3/8
    		Brass200 psi @ 72° F——4429K1230000
    1/2
    		Brass200 psi @ 72° F——4429K1240000
    3/4
    		Brass200 psi @ 72° F——4429K1250000
    1
    		Brass200 psi @ 72° F——4429K12600000
    1 1/4
    		Brass200 psi @ 72° F——4429K12700000
    1 1/2
    		Brass200 psi @ 72° F——4429K12800000
    2
    		Brass200 psi @ 72° F——4429K12900000
    2 1/2
    		Brass200 psi @ 72° F——4429K46400000
    3
    		Brass200 psi @ 72° F——4429K46500000
     
    BSPP Female
    1/8
    		BrassNot Rated—DIN 4313538N110000
    1/4
    		BrassNot Rated—DIN 4313538N120000
    3/8
    		BrassNot Rated—DIN 4313538N130000
    1/2
    		BrassNot Rated—DIN 4313538N140000
    3/4
    		BrassNot Rated—DIN 4313538N150000
    1
    		BrassNot Rated—DIN 4313538N1600000
    1 1/4
    		BrassNot Rated—DIN 4313538N1700000
    1 1/2
    		BrassNot Rated—DIN 4313538N1800000
     

    Medium-Pressure Brass and Bronze Threaded Pipe Fittings

    Choose these fittings when you need better strength than our low-pressure brass and bronze pipe fittings. They offer good corrosion resistance.
    Caps
    Image of Product. Female. Front orientation. Pipe and Fittings. Medium-Pressure Brass and Bronze Threaded Pipe Fittings, Caps, Threaded Fitting Connection, Female.

    Female

    Pipe
    Size
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Each
    NPT Female
    1/2
    		250
    		Brass400 psi @ 72° F9152K71000000
    3/4
    		250
    		Brass400 psi @ 72° F9152K7200000
    1
    		250
    		Brass400 psi @ 72° F9152K73000000
    2
    		250
    		Brass400 psi @ 72° F9152K75000000
     

    Low-Pressure Brass and Bronze Threaded Pipe Fittings with Sealant

    The male threads on these fittings have a sealant applied for extra protection against leaks. Also known as Pressure Class 125 fittings, they are built for use in low-pressure applications. They are brass for good corrosion resistance.
    Square-Drive Plugs
    Image of Product. NPT Male. Front orientation. Pipe and Fittings. Low-Pressure Brass and Bronze Threaded Pipe Fittings with Sealant, Square-Drive Plugs, Threaded Fitting Connection, Male.

    NPT Male

    NSF/ANSI 61—To adhere to safety standards for drinking water systems, use pipe that meets NSF/ANSI 61.
    Pipe
    Size
    Construction
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Food Industry
    Std.
    Each
    NPT Male
    1/2
    		Solid125
    		Brass200 psi @ 72° FNSF/ANSI 61
    		2725K44000000
    3/4
    		Solid125
    		Brass200 psi @ 72° FNSF/ANSI 61
    		2725K4500000
    1
    		Solid125
    		Brass200 psi @ 72° FNSF/ANSI 61
    		2725K4600000
    1 1/4
    		Solid125
    		Brass200 psi @ 72° FNSF/ANSI 61
    		2725K8800000
    1 1/2
    		Solid125
    		Brass200 psi @ 72° FNSF/ANSI 61
    		2725K4700000
    2
    		Solid125
    		Brass200 psi @ 72° FNSF/ANSI 61
    		2725K4800000
     
    External-Square-Drive Plugs
    Image of Product. NPT Male. Front orientation. Pipe and Fittings. Low-Pressure Brass and Bronze Threaded Pipe Fittings with Sealant, External-Square-Drive Plugs, Threaded Fitting Connection, Male, Square Body.

    NPT Male

    Pipe
    Size
    Construction
    Pressure
    Class
    Body
    Shape
    Material
    Max. Pressure
    @ Temp.
    Each
    NPT Male
    1/8
    		Solid125
    		SquareBrass200 psi @ 72° F2725K8500000
    1/4
    		Solid125
    		SquareBrass200 psi @ 72° F2725K860000
    3/8
    		Solid125
    		SquareBrass200 psi @ 72° F2725K870000
    1/2
    		Solid125
    		SquareBrass200 psi @ 72° F2725K380000
    3/4
    		Solid125
    		SquareBrass200 psi @ 72° F2725K3900000
    1
    		Solid125
    		SquareBrass200 psi @ 72° F2725K4100000
    1 1/2
    		Solid125
    		SquareBrass200 psi @ 72° F2725K4200000
    2
    		Solid125
    		SquareBrass200 psi @ 72° F2725K4300000
     
    back to top