McMaster-Carr logo
    Filter by
    Fitting Connection
    Industrial Info Compare
    Pressure Class
    Industrial Info Compare
    Fitting Type
    Industrial Info Snippet
    Flanged Connection Surface
    Pipe Schedule
    Industrial Info Compare
    Number of Bolt Holes
    For Fitting Schedule
    Industrial Info Compare
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Export Control Classification Number (ECCN)
    Industrial Info Compare
    DFARS Specialty Metals
    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)
    114 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.

    Performance

    Performance

    Threading

    Low-Pressure Iron and Steel Unthreaded Pipe Flanges

    Bolt two flat-surface flanges or two raised-surface flanges of the same size together with a gasket (sold separately) to create an access point in a pipe line. Flanges are for use with low-pressure applications in noncorrosive environments.
    Flanges
    Image of Product. Socket Connect: Front. Front orientation. Contains Annotated. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Flanges, Socket-Connect Female, Raised Surface.
    Image of Product. Socket Connect: Raised Surface on Back. Back orientation. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Flanges, Socket-Connect Female, Raised Surface.

    Socket Connect:

    Front

    Socket

    Connect:

    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
    Socket-Connect Female
    1/2
    		1/2
    		Raised3 1/2"1/2"5/8"42 3/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K412000000
    3/4
    		3/4
    		Raised3 7/8"1/2"5/8"42 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K35400000
    1
    		1
    		Raised4 1/4"1/2"5/8"43 1/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K35500000
    1 1/4
    		1 1/4
    		Raised4 5/8"1/2"5/8"43 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K35600000
    1 1/2
    		1 1/2
    		Raised5"1/2"5/8"43 7/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K35700000
    2
    		2
    		Raised6"5/8"3/4"44 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K35800000
    2 1/2
    		2 1/2
    		Raised7"5/8"3/4"45 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K35900000
    3
    		3
    		Raised7 1/2"5/8"3/4"46"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K36100000
    4
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K36200000
    5
    		5
    		Raised10"3/4"7/8"88 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K39900000
    6
    		6
    		Raised11"3/4"7/8"89 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K36300000
    8
    		8
    		Raised13 1/2"3/4"7/8"811 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K411000000
    10
    		10
    		Raised16"7/8"1"1214 1/4"150
    		Steel
    		285 psi @ 72° FNot Rated68095K51000000
     
    Forged Flanges
    Image of Product. Socket Connect: Front. Front orientation. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Forged Flanges, Socket-Connect Female, Raised Surface.
    Image of Product. Socket Connect: Raised Surface on Back. Back orientation. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Forged Flanges, Socket-Connect Female, Raised Surface.

    Socket Connect:

    Front

    Socket

    Connect:

    Raised

    Surface on

    Back

    Forged flanges have better strength than cast flanges.
    A350 Carbon Steel—Even in temperatures as low as -46° F, these flanges won’t become brittle, so they absorb impact better than other low-pressure steel flanges.
    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
    Socket-Connect Female
    2
    		2
    		Raised6"5/8"3/4"44 3/4"150
    		A350 Carbon Steel285 psi @ 72° F230 psi @ 300° F5235N24000000
    3
    		3
    		Raised7 1/2"5/8"3/4"46"150
    		A350 Carbon Steel285 psi @ 72° F230 psi @ 300° F5235N2500000
    4
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		A350 Carbon Steel285 psi @ 72° F230 psi @ 300° F5235N2600000
     

    Low-Pressure Stainless Steel Unthreaded Pipe Flanges

    Bolt two flat-surface flanges or two raised-surface flanges of the same size together with a gasket (sold separately) to create an access point in a pipe line.
    Forged Flanges
    Image of Product. Front. Front orientation. Contains Annotated. Pipe and Fittings. Low-Pressure Stainless Steel Unthreaded Pipe Flanges, Forged Flanges, Socket-Connect Female, Raised Surface.

    Front

    Forged flanges have better strength than cast flanges.
    304/304L Stainless Steel—Flanges hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.
    316/316L Stainless Steel—Flanges are the most corrosion resistant. They stand up to wet environments, just like 304 stainless steel flanges, but unlike 304 stainless steel, they will not corrode from salt water, chlorine solutions, and chemicals.
    Pipe
    Size
    Bolt
    Hole
    304/304L
    Stainless Steel
    316/316L
    Stainless Steel
    (A)
    (B)
    Flanged Connection
    Surface (B)
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Pressure
    Class
    Max. Pressure
    @ Temp.
    Each
    Each
    Socket-Connect Female
    1/2
    		1/2
    		Raised3 1/2"1/2"5/8"42 3/8"150
    		230 psi @ 72° F44685K18900000044695K179000000
    3/4
    		3/4
    		Raised3 7/8"1/2"5/8"42 3/4"150
    		230 psi @ 72° F44685K1910000044695K18100000
    1
    		1
    		Raised4 1/4"1/2"5/8"43 1/8"150
    		230 psi @ 72° F44685K1920000044695K18200000
    1 1/4
    		1 1/4
    		Raised4 5/8"1/2"5/8"43 1/2"150
    		230 psi @ 72° F44685K1930000044695K18300000
    1 1/2
    		1 1/2
    		Raised5"1/2"5/8"43 7/8"150
    		230 psi @ 72° F44685K1940000044695K18400000
    2
    		2
    		Raised6"5/8"3/4"44 3/4"150
    		230 psi @ 72° F44685K1950000044695K185000000
    2 1/2
    		2 1/2
    		Raised7"5/8"3/4"45 1/2"150
    		230 psi @ 72° F44685K19600000044695K186000000
    3
    		3
    		Raised7 1/2"5/8"3/4"46"150
    		230 psi @ 72° F44685K19700000044695K187000000
    4
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		230 psi @ 72° F44685K19800000044695K188000000
    6
    		6
    		Raised11"3/4"7/8"89 1/2"150
    		230 psi @ 72° F44685K19900000044695K189000000
    8
    		8
    		Raised13 1/2"3/4"7/8"811 3/4"150
    		230 psi @ 72° F44685K17400000044695K164000000
     

    High-Pressure Stainless Steel Unthreaded Pipe Flanges

    Use these heavy duty forged flanges for high-pressure applications. Bolt two flat-surface flanges or two raised-surface flanges of same size together with a gasket (sold separately) to create an access point in a pipe line.
    Forged Flanges
    Image of Product. Socket-Connect. Front orientation. Contains Annotated. Pipe and Fittings. High-Pressure Stainless Steel Unthreaded Pipe Flanges, Forged Flanges, Socket-Connect Female, Raised Surface.

    Socket-Connect

    Forged flanges have better strength than cast flanges.
    304/304L Stainless Steel—Flanges hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.
    316/316L Stainless Steel—Flanges are the most corrosion resistant. They stand up to wet environments, just like 304 stainless steel flanges, but unlike 304 stainless steel, they will not corrode from salt water, chlorine solutions, and chemicals.
    Pipe
    Size
    Dash
    Size
    Bolt
    Hole
    304/304L
    Stainless Steel
    316/316L
    Stainless Steel
    (A)
    (B)
    (A)
    (B)
    Flanged Connection
    Surface (B)
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Pressure
    Class
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    Each
    Socket-Connect Female
    1/2
    		1/2
    		0808Raised3 3/4"1/2"0.62"42 5/8"600
    		1,200 psi @ 72° F840 psi @ 400° F———01503N21000000
    1/2
    		1/2
    		0808Raised3 3/4"1/2"0.625"42 5/8"300
    		600 psi @ 72° F300 psi @ 360° F4448T2640000004452T27400000
    3/4
    		3/4
    		1212Raised4 5/8"5/8"0.75"43 1/4"300
    		600 psi @ 72° F300 psi @ 360° F4448T265000004452T27500000
    3/4
    		3/4
    		1212Raised4 5/8"5/8"0.75"43 1/4"600
    		1,200 psi @ 72° F840 psi @ 400° F———01503N2200000
    1
    		1
    		1616Raised4 7/8"5/8"0.75"43 1/2"300
    		600 psi @ 72° F300 psi @ 360° F4448T266000004452T27600000
    1
    		1
    		1616Raised4 7/8"5/8"0.75"43 1/2"600
    		1,200 psi @ 72° F840 psi @ 400° F1538N37000001503N23000000
    1 1/4
    		1 1/4
    		2020Raised5 1/4"5/8"0.75"43 7/8"300
    		600 psi @ 72° F300 psi @ 360° F4448T2670000004452T277000000
    1 1/2
    		1 1/2
    		2424Raised6 1/8"3/4"0.875"44 1/2"300
    		600 psi @ 72° F300 psi @ 360° F4448T268000004452T278000000
    1 1/2
    		1 1/2
    		2424Raised6 1/8"3/4"0.875"44 1/2"600
    		1,200 psi @ 72° F840 psi @ 400° F1538N390000001503N25000000
    2
    		2
    		3232Raised6 1/2"5/8"0.75"85"300
    		600 psi @ 72° F300 psi @ 360° F4448T2690000004452T279000000
    2
    		2
    		3232Raised6 1/2"5/8"0.75"85"600
    		1,200 psi @ 72° F840 psi @ 400° F1538N410000001503N26000000
    2 1/2
    		2 1/2
    		4040Raised7 1/2"3/4"0.875"85 7/8"300
    		600 psi @ 72° F300 psi @ 360° F4448T271000000———0
    3
    		3
    		4848Raised8 1/4"3/4"0.875"86 5/8"300
    		600 psi @ 72° F300 psi @ 360° F4448T2720000004452T282000000
    3
    		3
    		4848Raised8 1/4"3/4"0.88"86 5/8"600
    		1,200 psi @ 72° F840 psi @ 400° F1538N43000000———0
    4
    		4
    		6464Raised10"3/4"0.875"87 7/8"300
    		600 psi @ 72° F300 psi @ 360° F4448T2730000004452T283000000
    6
    		6
    		9696Raised12 1/2"3/4"0.875"1210 5/8"300
    		600 psi @ 72° F300 psi @ 360° F4448T274000000———0
     

    High-Pressure Iron and Steel Unthreaded Pipe Flanges

    Forged for extra strength, these heavy duty flanges can withstand high-pressure applications. Bolt two flat-surface flanges or two raised-surface flanges of the same size together with a gasket (sold separately) to create an access point in a pipe line.
    Forged Flanges
    Image of Product. Socket Connect (Front). Front orientation. Contains Annotated. Pipe and Fittings. High-Pressure Iron and Steel Unthreaded Pipe Flanges, Forged Flanges, Socket-Connect Female, Raised Surface.
    Image of Product. Socket-Connect (Raised Surface on Back). Back orientation. Pipe and Fittings. High-Pressure Iron and Steel Unthreaded Pipe Flanges, Forged Flanges, Socket-Connect Female, Raised Surface.

    Socket Connect (Front)

    Socket-Connect

    (Raised

    Surface on

    Back)

    Forged flanges have better strength than cast flanges.
    Pipe
    Size
    Dash
    Size
    Bolt
    Hole
    (A)
    (B)
    (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
    Socket-Connect Female
    1/2
    		1/2
    		0808Raised3 3/4"1/2"5/8"42 5/8"300
    		Steel
    		600 psi @ 72° F300 psi @ 300° F6806K343000000
    3/4
    		3/4
    		1212Raised4 5/8"5/8"3/4"43 1/4"300
    		Steel
    		600 psi @ 72° F300 psi @ 300° F6806K28700000
    1
    		1
    		1616Raised4 7/8"5/8"3/4"43 1/2"300
    		Steel
    		600 psi @ 72° F300 psi @ 300° F6806K28800000
    1
    		1
    		1616Raised4.88"3/4"3/4"43 1/2"600
    		Steel
    		1,400 psi @ 72° F1,300 psi @ 300° F6806K42800000
    1 1/4
    		1 1/4
    		2020Raised5 1/4"5/8"3/4"43 7/8"300
    		Steel
    		600 psi @ 72° F300 psi @ 300° F6806K28900000
    1 1/2
    		1 1/2
    		2424Raised6.12"0.88"0.88"44 1/2"600
    		Steel
    		1,400 psi @ 72° F1,300 psi @ 300° F6806K42900000
    1 1/2
    		1 1/2
    		2424Raised6 1/8"3/4"7/8"44 1/2"300
    		Steel
    		600 psi @ 72° F300 psi @ 300° F6806K29100000
    2
    		2
    		3232Raised6 1/2"5/8"3/4"85"300
    		Steel
    		600 psi @ 72° F300 psi @ 300° F6806K29200000
    2
    		2
    		3232Raised6 1/2"3/4"3/4"85"600
    		Steel
    		1,400 psi @ 72° F1,300 psi @ 300° F6806K43100000
    2 1/2
    		2 1/2
    		4040Raised7 1/2"3/4"7/8"85 7/8"300
    		Steel
    		600 psi @ 72° F300 psi @ 300° F6806K29300000
    3
    		3
    		4848Raised8 1/4"3/4"7/8"86 5/8"300
    		Steel
    		600 psi @ 72° F300 psi @ 300° F6806K29400000
    3
    		3
    		4848Raised8 1/4"0.88"0.88"86.62"600
    		Steel
    		1,400 psi @ 72° F1,300 psi @ 300° F6806K43200000
    4
    		4
    		6464Raised10"3/4"7/8"87 7/8"300
    		Steel
    		Not RatedNot Rated6806K295000000
    4
    		4
    		6464Raised10 3/4"1"1"88 1/2"600
    		Steel
    		Not RatedNot Rated6806K433000000
    5
    		5
    		——Raised11"3/4"7/8"89 1/4"300
    		Steel
    		Not RatedNot Rated6806K341000000
    6
    		6
    		9696Raised12 1/2"3/4"7/8"1210 5/8"300
    		Steel
    		Not RatedNot Rated6806K296000000
    8
    		8
    		——Raised15"7/8"1"1213"300
    		Steel
    		Not RatedNot Rated6806K342000000
     

    Extreme-Pressure Iron and Steel Unthreaded Pipe Flanges

    For excellent strength in extreme-pressure applications, choose these heavy duty Pressure Class 1500 flanges. Bolt two same-size flanges together with a gasket (sold separately) to create an access point in a pipe line. They are for noncorrosive environments.
    Forged Flanges
    Image of Product. Socket-Connect Female: Front. Front orientation. Contains Annotated. Pipe and Fittings. Extreme-Pressure Iron and Steel Unthreaded Pipe Flanges, Forged Flanges, Socket-Connect Female, Raised Surface.
    Image of Product. Socket-Connect Female: Raised Surface on Back. Back orientation. Pipe and Fittings. Extreme-Pressure Iron and Steel Unthreaded Pipe Flanges, Forged Flanges, Socket-Connect Female, Raised Surface.

    Socket-Connect Female:

    Front

    Socket-Connect

    Female: Raised

    Surface on Back

    Forged flanges have better strength than cast flanges.
    Pipe
    Size
    Dash
    Size
    Bolt
    Hole
    (A)
    (B)
    (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
    Socket-Connect Female
    3/4
    		3/4
    		1212Raised5 1/8"3/4"7/8"43 1/2"1500
    		Steel
    		3,700 psi @ 72° F3,200 psi @ 300° F1139T590000000
    1
    		1
    		1616Raised5 7/8"7/8"1"44"1500
    		Steel
    		3,700 psi @ 72° F3,200 psi @ 300° F1139T61000000
    1 1/2
    		1 1/2
    		2424Raised7"1"1 1/8"44 7/8"1500
    		Steel
    		3,700 psi @ 72° F3,200 psi @ 300° F1139T63000000
    2
    		2
    		3232Raised8 1/2"7/8"1"86 1/2"1500
    		Steel
    		3,700 psi @ 72° F3,200 psi @ 300° F1139T64000000
     

    High-Purity Polypropylene Pipe Flanges for Drinking Water

    The inside of these flanges won’t leach contaminants into your line or accumulate particles—they’re polished to an ultra-smooth 12 Ra finish, which also makes them easy to clean. Made of polypropylene, they resist organic solvents, acids, and alkalis better than CPVC pipe flanges. Bolt two same-size flanges together with a gasket (not included) to create an access point in your line. These flanges meet NSF/ANSI 61 for use with drinking water, and they’re FDA compliant for direct contact with food. They also meet ASTM requirements for material and performance, and ISO requirements for dimensions.
    Also known as lap-joint flanges, they connect to pipe with stub-end straight adapters (not included). Slide the stub end adapter into your flange and weld to your pipe with socket fusion. Since the flange isn’t welded to the pipe, it can be disconnected easily for cleaning and inspecting.
    Warning: Never use plastic pipe fittings, flanges, and pipe with compressed air or gas.
    Flanges
    Image of Product. Flange with Straight Adapter. Front orientation. Pipe and Fittings. High-Purity Polypropylene Pipe Flanges for Drinking Water, Flanges, Stub End, Flat Surface.

    Flange with Straight

    Adapter

    Stub-End Fitting Connection—Stub-end flanges are also known as lap-joint flanges. Use them with a stub-end straight adapter (not included). The stub-end straight adapter slides into the flange and welds to pipe (not the flange). Since the flange isn’t welded to the pipe, it can be disconnected easily for frequent cleaning and inspecting.
    NSF/ANSI 61—To adhere to safety standards for drinking water systems, use pipe that meets NSF/ANSI 61.
    Pipe
    Size
    Bolt
    Hole
    (A)
    (B)
    Flanged Connection
    Surface (B)
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Pressure
    Class
    Material
    Color
    Max. Pressure
    @ Temp.
    Food Industry Std.
    Each
    Stub End
    1/2
    		1/2
    		Flat3 5/8"1/2"5/8"42 3/8"150
    		PolypropyleneLight Gray150 psi @ 72° FFDA Compliant 21 CFR 177.1520, FDA Compliant 21 CFR 178.3297, NSF/ANSI 615352N11000000
    3/4
    		3/4
    		Flat4 1/8"1/2"5/8"42 3/4"150
    		PolypropyleneLight Gray150 psi @ 72° FFDA Compliant 21 CFR 177.1520, FDA Compliant 21 CFR 178.3297, NSF/ANSI 615352N1200000
    1
    		1
    		Flat4 3/8"1/2"5/8"43 1/8"150
    		PolypropyleneLight Gray150 psi @ 72° FFDA Compliant 21 CFR 177.1520, FDA Compliant 21 CFR 178.3297, NSF/ANSI 615352N1300000
    1 1/2
    		1 1/2
    		Flat5 1/4"1/2"5/8"43 7/8"150
    		PolypropyleneLight Gray150 psi @ 72° FFDA Compliant 21 CFR 177.1520, FDA Compliant 21 CFR 178.3297, NSF/ANSI 615352N1400000
    2
    		2
    		Flat6 1/4"5/8"3/4"44 3/4"150
    		PolypropyleneLight Gray150 psi @ 72° FFDA Compliant 21 CFR 177.1520, FDA Compliant 21 CFR 178.3297, NSF/ANSI 615352N15000000
     
    Stub-End Straight Adapters
    Image of Product. Straight Adapter. Front orientation. Pipe Stub Ends. High-Purity Polypropylene Pipe Flanges for Drinking Water.

    Straight

    Adapter

    Stub-end straight adapters are used with flanges. Slide a flange onto the stub end and weld the stub end to pipe (not the flange). Since the flange isn’t welded to the pipe, it can be disconnected easily, which creates an access point for frequent cleaning and inspecting.
    Pipe
    Size
    Wall
    Thk.
    Flange
    OD
    Finished
    Material
    Each
    1/2
    		0.119"1 47/64"Polypropylene5381N085000000
    3/4
    		0.138"2 1/8"Polypropylene5381N08600000
    1
    		0.138"2 31/64"Polypropylene5381N08700000
    1 1/2
    		0.195"3 15/64"Polypropylene5381N08800000
    2
    		0.178"3 31/32"Polypropylene5381N08900000

    SAE High-Pressure Iron and Steel Unthreaded Pipe Flanges

    Create an access point in a high-pressure hydraulic fluid line with these flanges. They are also known as Code 61 SAE hydraulic flanges. To connect, bolt a flange with an O-ring groove surface to a flange with a flat surface of the same size. Flanges are for use in noncorrosive environments.
    Machined Flanges
    Image of Product. Front. Front orientation. Pipe and Fittings. SAE High-Pressure Iron and Steel Unthreaded Pipe Flanges, Machined Flanges, Socket-Connect Female, Flat Surface.
    Image of Product. Back (O-Ring Groove). Back orientation. Pipe and Fittings. SAE High-Pressure Iron and Steel Unthreaded Pipe Flanges, Machined Flanges, Socket-Connect Female, O-Ring Groove Surface.

    Front

    Back

    (O-Ring

    Groove)

    Dash
    Size
    Bolt
    Hole
    Pipe Size
    (A)
    SAE Pipe
    Flange Size (B)
    (A)
    (B)
    Flanged Connection
    Surface (B)
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Material
    Max. Pressure
    @ Temp.
    Each
    Socket-Connect Female
    3/4
    		3/41212Flat3/8"0.41"4Steel
    		3,000 psi @ 72° F2125N34000000
    3/4
    		3/41212O-Ring Groove3/8"0.41"4Steel
    		3,000 psi @ 72° F2125N3800000
    1
    		11616Flat3/8"0.41"4Steel
    		3,000 psi @ 72° F2125N3500000
    1
    		11616O-Ring Groove3/8"0.41"4Steel
    		3,000 psi @ 72° F2125N3900000
    1 1/2
    		1 1/22424Flat1/2"1/2"4Steel
    		3,000 psi @ 72° F2125N3600000
    1 1/2
    		1 1/22424O-Ring Groove1/2"0.53"4Steel
    		3,000 psi @ 72° F2125N400000
    1 1/2
    		1 1/22424O-Ring Groove12 mm13 mm4Steel
    		3,000 psi @ 72° F2125N4400000
    2
    		23232Flat1/2"0.53"4Steel
    		3,000 psi @ 72° F2125N3700000
    2
    		23232O-Ring Groove1/2"0.53"4Steel
    		3,000 psi @ 72° F2125N4100000
    2
    		23232O-Ring Groove12 mm13 mm4Steel
    		3,000 psi @ 72° F2125N4500000
     

    SAE High-Pressure Stainless Steel Unthreaded Pipe Flanges

    Create an access point in a high-pressure hydraulic fluid line with these flanges. They are also known as Code 61 SAE hydraulic flanges. To connect, bolt a flange with an O-ring groove surface to a flange with a flat surface of the same size. Flanges are 316 stainless steel for excellent corrosion resistance.
    Machined Flanges
    Image of Product. Flat Front. Front orientation. Pipe and Fittings. SAE High-Pressure Stainless Steel Unthreaded Pipe Flanges, Machined Flanges, Socket-Connect Female, Flat Surface.
    Image of Product. Flat Back. Back orientation. Pipe and Fittings. SAE High-Pressure Stainless Steel Unthreaded Pipe Flanges, Machined Flanges, Socket-Connect Female, Flat Surface.
    Image of Product. O-Ring Groove Front. Front orientation. Pipe and Fittings. SAE High-Pressure Stainless Steel Unthreaded Pipe Flanges, Machined Flanges, Socket-Connect Female, O-Ring Groove Surface.
    Image of Product. O-Ring Groove Back. Back orientation. Pipe and Fittings. SAE High-Pressure Stainless Steel Unthreaded Pipe Flanges, Machined Flanges, Socket-Connect Female, O-Ring Groove Surface.

    Flat

    Front

    Flat Back

    O-Ring

    Groove

    Front

    O-Ring

    Groove

    Back

    316/316L Stainless Steel—Flanges are the most corrosion resistant. They stand up to wet environments, just like 304 stainless steel flanges, but unlike 304 stainless steel, they will not corrode from salt water, chlorine solutions, and chemicals.
    Dash
    Size
    Bolt
    Hole
    316/316L
    Stainless Steel
    Pipe Size
    (A)
    SAE Pipe
    Flange Size (B)
    (A)
    (B)
    Flanged Connection
    Surface (B)
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Max. Pressure
    @ Temp.
    Each
    Socket-Connect Female
    3/4
    		3/41212Flat3/8"0.406"45,000 psi @ 72° F1431N110000000
    3/4
    		3/41212O-Ring Groove3/8"0.406"45,000 psi @ 72° F1431N015000000
    1
    		11616Flat3/8"0.406"45,000 psi @ 72° F1431N012000000
    1
    		11616O-Ring Groove3/8"0.406"45,000 psi @ 72° F1431N016000000
    1 1/2
    		1 1/22424Flat1/2"0.531"43,000 psi @ 72° F1431N013000000
    1 1/2
    		1 1/22424O-Ring Groove1/2"0.531"43,000 psi @ 72° F1431N017000000
    2
    		23232Flat1/2"0.531"43,000 psi @ 72° F1431N014000000
    2
    		23232O-Ring Groove1/2"0.531"43,000 psi @ 72° F1431N018000000
     
    back to top