McMaster-Carr logo
    Filter by
    Connects To
    Material
    Pipe Material
    Fitting Connection
    Industrial Info Compare
    Fitting Type
    Pressure Class
    Industrial Info Compare
    Thread Type
    Industrial Info Compare
    Number of Bolt Holes
    Flanged Connection Surface
    Pipe Schedule
    Industrial Info Compare
    Fitting Material
    Maximum Steam Pressure @ Temperature
    Gender
    Bolt Diameter
    Pipe Finish
    DFARS Specialty Metals
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    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)
    20 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.

    Low-Pressure Galvanized Iron and Steel Threaded Pipe Flanges

    The galvanized finish on these flanges provides fair corrosion resistance. Also known as Pressure Class 150 flanges, they are for use in low-pressure applications. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line.
    Flanges
    Image of Product. Front. Front orientation. Pipe and Fittings. Low-Pressure Galvanized Iron and Steel Threaded Pipe Flanges, Flanges, Threaded Fitting Connection, Female, Flanged Fitting Connection, Raised Surface.
    Image of Product. Raised Surface on Back. Back orientation. Pipe and Fittings. Low-Pressure Galvanized Iron and Steel Threaded Pipe Flanges, Flanges, Threaded Fitting Connection, Female, Flanged Fitting Connection, Raised Surface.

    Front

    Raised

    Surface on

    Back

    Pipe
    Size
    Bolt
    Hole
    (A)
    (B)
    Flanged Connection
    Surface (B)
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female
    1/2
    		1/2
    		Raised3 1/2"1/2"5/8"42 3/8"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K119000000
    3/4
    		3/4
    		Raised3 7/8"1/2"5/8"42 3/4"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K12100000
    1
    		1
    		Raised4 1/4"1/2"5/8"43 1/8"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K12200000
    1 1/4
    		1 1/4
    		Raised4 5/8"1/2"5/8"43 1/2"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K12300000
    1 1/2
    		1 1/2
    		Raised5"1/2"5/8"43 7/8"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K12400000
    2
    		2
    		Raised6"5/8"3/4"44 3/4"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K12500000
    2 1/2
    		2 1/2
    		Raised7"5/8"3/4"45 1/2"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K12600000
    3
    		3
    		Raised7 1/2"5/8"3/4"46"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K12700000
    4
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K128000000
    5
    		5
    		Raised10"3/4"7/8"88 1/2"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K129000000
    6
    		6
    		Raised11"3/4"7/8"89 1/2"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K131000000
    8
    		8
    		Raised13 1/2"3/4"7/8"811 3/4"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K133000000
     
    BSPT Female
    2
    		2
    		Raised6"3/4"3/4"44 3/4"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F1584N5000000
     

    High-Pressure Galvanized Iron and Steel Threaded Pipe Flanges

    A galvanized finish gives these flanges fair corrosion resistance. Also known as Pressure Class 300 flanges, they can withstand medium-pressure applications. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line.
    Flanges
    Image of Product. Front. Front orientation. Pipe and Fittings. High-Pressure Galvanized Iron and Steel Threaded Pipe Flanges, Flanges, Flanged Fitting Connection, Threaded Fitting Connection, Female, Raised Surface.
    Image of Product. Raised Surface on Back. Back orientation. Pipe and Fittings. High-Pressure Galvanized Iron and Steel Threaded Pipe Flanges, Flanges, Flanged Fitting Connection, Threaded Fitting Connection, Female, Raised Surface.

    Front

    Raised

    Surface on

    Back

    Pipe
    Size
    Bolt
    Hole
    (A)
    (B)
    Flanged Connection
    Surface (B)
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam
    Pressure @ Temp.
    Each
    NPT Female
    3/4
    		3/4
    		Raised4 5/8"3/4"3/4"43 1/4"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N120000000
    1
    		1
    		Raised4 7/8"3/4"3/4"43 1/2"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N1300000
    1 1/4
    		1 1/4
    		Raised5 1/4"3/4"3/4"43 7/8"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N14000000
    1 1/2
    		1 1/2
    		Raised6 1/8"7/8"0.88"44 1/2"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N1500000
    2
    		2
    		Raised6 1/2"3/4"3/4"85"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N16000000
    3
    		3
    		Raised8 1/4"7/8"0.88"86 5/8"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N17000000
    4
    		4
    		Raised10"7/8"0.88"87 7/8"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N18000000
     
    back to top