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    28 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, Female, Flanged Fitting Connection, Threaded 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, Female, Flanged Fitting Connection, Threaded 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, Female, Flanged Fitting Connection, Threaded Fitting Connection, Raised Surface.
    Image of Product. Raised Surface on Back. Back orientation. Pipe and Fittings. High-Pressure Galvanized Iron and Steel Threaded Pipe Flanges, Flanges, Female, Flanged Fitting Connection, Threaded 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
    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
     

    Low-Pressure Galvanized Iron and Steel Threaded Pipe Locknuts

    Image of Product. Front orientation. Pipe Locknuts. Low-Pressure Galvanized Iron and Steel Threaded Pipe Locknuts.
    The galvanized finish on these locknuts provides fair corrosion resistance. Locknuts are for use in low-pressure applications.
    Locknuts thread onto the male end of a fitting to provide extra holding power so the fitting won’t loosen from vibration.
    NPSL Thread—NPSL (National Pipe Straight Locknut) threads are compatible with NPT threads.
    For Pipe
    For
    Flange
    Pipe
    Size
    Hex Wd.
    Lg.
    Max. Pressure
    @ Temp.
    Max. Steam
    Pressure @ Temp.
    For Use With
    Pressure
    Class
    Material
    Schedule
    Material
    Class
    Material
    Specs. Met
    Each
    NPSL Female
    1/4
    		27/32"1/4"Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water150
    		Galvanized Iron40
    		Galvanized Steel150
    		Galvanized SteelASME B16.144638K61200000
    3/8
    		1"0.28"Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water150
    		Galvanized Iron40
    		Galvanized Steel150
    		Galvanized SteelASME B16.144638K6130000
    1/2
    		1 3/16"0.31"Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water150
    		Galvanized Iron40
    		Galvanized Steel150
    		Galvanized SteelASME B16.144638K6140000
    3/4
    		1 7/16"0.34"Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water150
    		Galvanized Iron40
    		Galvanized Steel150
    		Galvanized SteelASME B16.144638K6150000
    1
    		1 3/4"0.38"Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water150
    		Galvanized Iron40
    		Galvanized Steel150
    		Galvanized SteelASME B16.144638K61600000
    1 1/4
    		2 3/32"0.42"Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water150
    		Galvanized Iron40
    		Galvanized Steel150
    		Galvanized SteelASME B16.144638K61700000
    1 1/2
    		2 11/32"0.47"Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water150
    		Galvanized Iron40
    		Galvanized Steel150
    		Galvanized SteelASME B16.144638K61800000
    2
    		2 7/8"0.53"Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water150
    		Galvanized Iron40
    		Galvanized Steel150
    		Galvanized SteelASME B16.144638K61900000
     
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