McMaster-Carr logo
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    78 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.

    High-Pressure Iron and Steel Threaded Pipe Fittings

    These fittings can stand up to high-pressure applications. Use them in noncorrosive environments.
    Note: The maximum pressure listed for Class 3000 fittings is for conditions where there are no sudden changes in pressure or velocity. Please refer to ASME B16.11 to determine the specific maximum operating pressure for your application.
    90° Elbow Connectors
    Image of Product. Female. Front orientation. Pipe and Fittings. High-Pressure Iron and Steel Threaded Pipe Fittings, 90° Elbow Connectors, Threaded Fitting Connection, Female.

    Female

    Zinc-Phosphate-Coated Steel—A phosphate coating offers some corrosion resistance, but these fittings aren't intended for corrosive environments.
    Pipe
    Size
    Dash
    Size
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female
    1/8
    023000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K21100000
    1/4
    043000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K110000
    3/8
    063000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K120000
    1/2
    083000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K130000
    3/4
    123000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K140000
    1
    163000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K1500000
    1 1/4
    203000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K1600000
    1 1/2
    243000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K1700000
    2
    323000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K1800000
    2 1/2
    403000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K212000000
    3
    483000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K213000000
    4
    643000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K214000000
     
    Intermittent-Swivel 90° Elbow Connectors
    Image of Product. Front orientation. Pipe and Fittings. High-Pressure Iron and Steel Threaded Pipe Fittings, Intermittent-Swivel 90° Elbow Connectors, Threaded Fitting Connection, Female.

    Female, Threaded

    Fitting Connection

    Fittings with intermittent swivel rotate 360° as needed to allow movement in a rigid metal piping system.
    Pipe
    Size
    Material
    Max. Pressure
    @ Temp.
    Each
    NPT Female
    1
    Iron600 psi @ 72° F53775K520000000
    1 1/2
    Iron600 psi @ 72° F53775K54000000
    2
    Iron600 psi @ 72° F53775K56000000
    3
    Iron600 psi @ 72° F53775K58000000
     
    Swivels-Until-Tightened 90° Elbow Connectors
    Image of Product. Front orientation. Pipe and Fittings. High-Pressure Iron and Steel Threaded Pipe Fittings, Swivels-Until-Tightened 90° Elbow Connectors, Threaded Fitting Connection, Female.

    Female, Threaded

    Fitting Connection

    Fittings that swivel until tightened rotate for easy installation. They have a quick-access nut that allows you to perform maintenance without removing the fitting from your line.
    Pipe
    Size
    Dash
    Size
    Material
    Max. Pressure
    @ Temp.
    Each
    NPT Female
    1/2
    08Steel
    1,000 psi @ 72° F6821K420000000
    3/4
    12Steel
    1,000 psi @ 72° F6821K83000000
    1
    16Steel
    1,000 psi @ 72° F6821K84000000
    1 1/4
    20Steel
    1,000 psi @ 72° F6821K85000000
    1 1/2
    24Steel
    1,000 psi @ 72° F6821K46000000
    2
    32Steel
    1,000 psi @ 72° F6821K4700000000
     
    90° Elbow Adapters
    Image of Product. Female × Male. Front orientation. Pipe and Fittings. High-Pressure Iron and Steel Threaded Pipe Fittings, 90° Elbow Adapters, Female, Male, Threaded Fitting Connection.

    Female × Male

    Female x male 90° elbow adapters are also known as street elbows.
    Zinc-Phosphate-Coated Steel—A phosphate coating offers some corrosion resistance, but these fittings aren't intended for corrosive environments.
    Pipe
    Size
    Dash
    Size
    (A)
    (B)
    (A)
    (B)
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female × NPT Male
    1/4
    1/4
    04043000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K31000000
    3/8
    3/8
    06063000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K3200000
    1/2
    1/2
    08083000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K3300000
    3/4
    3/4
    12123000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K3400000
    1
    1
    16163000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K3500000
    1 1/4
    1 1/4
    20203000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K3600000
    1 1/2
    1 1/2
    24243000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K3700000
    2
    2
    32323000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K3800000
     
    45° Elbow Connectors
    Image of Product. NPT Female. Front orientation. Pipe and Fittings. High-Pressure Iron and Steel Threaded Pipe Fittings, 45° Elbow Connectors, Threaded Fitting Connection, Female.

    NPT Female

    Zinc-Phosphate-Coated Steel—A phosphate coating offers some corrosion resistance, but these fittings aren't intended for corrosive environments.
    Pipe
    Size
    Dash
    Size
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female
    1/8
    023000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K221000000
    1/4
    043000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K2100000
    3/8
    063000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K2200000
    1/2
    083000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K2300000
    3/4
    123000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K2400000
    1
    163000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K2500000
    1 1/4
    203000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K2600000
    1 1/2
    243000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K2700000
    2
    323000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K2800000
    2 1/2
    403000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K222000000
    3
    483000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K223000000
    4
    643000
    Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K224000000
     

    High-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

    A galvanized finish gives these fittings better corrosion resistance than our plain steel high-pressure fittings. Also known as Pressure Class 3000 fittings, they have excellent strength to handle high-pressure applications.
    90° Elbow Connectors
    Image of Product. Female. Front orientation. Pipe and Fittings. High-Pressure Galvanized Iron and Steel Threaded Pipe Fittings, 90° Elbow Connectors, Threaded Fitting Connection, Female.

    Female

    Pipe
    Size
    Dash
    Size
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female
    1/8
    023000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K101000000
    1/4
    043000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K10200000
    3/8
    063000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K10300000
    1/2
    083000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K1040000
    3/4
    123000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K10500000
    1
    163000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K10600000
    1 1/4
    203000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K10700000
    1 1/2
    243000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K10800000
    2
    323000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K10900000
     
    90° Elbow Adapters
    Image of Product. Female × Male. Front orientation. Pipe and Fittings. High-Pressure Galvanized Iron and Steel Threaded Pipe Fittings, 90° Elbow Adapters, Female, Male, Threaded Fitting Connection.

    Female × Male

    Female x male 90° elbow adapters are also known as street elbows.
    Pipe
    Size
    Dash
    Size
    (A)
    (B)
    (A)
    (B)
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female × NPT Male
    1/8
    1/8
    02023000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K111000000
    1/4
    1/4
    04043000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K11200000
    3/8
    3/8
    06063000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K11300000
    1/2
    1/2
    08083000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K11400000
    3/4
    3/4
    12123000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K11500000
    1
    1
    16163000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K11600000
    1 1/4
    1 1/4
    20203000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K11700000
    1 1/2
    1 1/2
    24243000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K11800000
    2
    2
    32323000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K11900000
     
    45° Elbow Connectors
    Image of Product. Female. Front orientation. Pipe and Fittings. High-Pressure Galvanized Iron and Steel Threaded Pipe Fittings, 45° Elbow Connectors, Threaded Fitting Connection, Female.

    Female

    Pipe
    Size
    Dash
    Size
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female
    1/8
    023000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K121000000
    1/4
    043000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K12200000
    3/8
    063000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K12300000
    1/2
    083000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K12400000
    3/4
    123000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K12500000
    1
    163000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K12600000
    1 1/4
    203000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K12700000
    1 1/2
    243000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K12800000
    2
    323000
    Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K12900000
     

    Extreme-Pressure Stainless Steel Socket-Connect Pipe Fittings

    The strongest socket-connect fittings we offer, these heavy duty forged fittings are also known as Pressure Class 6000. They are easier to weld than butt-weld fittings because the fitting doesn’t need to align perfectly to the pipe. Slide pipe into the socket and weld for a strong, permanent connection.
    90° Elbow Connectors
    Image of Product. Front orientation. Pipe and Fittings. Extreme-Pressure Stainless Steel Socket-Connect Pipe Fittings, 90° Elbow Connectors, Socket Connect.

    Socket Connect

    304/304L Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.
    316/316L Stainless Steel—Fittings are the most corrosion resistant. They stand up to wet environments, just like 304 stainless steel fittings, but unlike 304 stainless steel, they will not corrode from salt water, chlorine solutions, and chemicals.
    304/304L Stainless Steel
    316/316L Stainless Steel
    Pipe
    Size
    Pressure
    Class
    Pipe
    Schedule
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    Socket Connect
    1/2
    6000
    160
    7,700 psi @ 72° F6,500 psi @ 220° F2064K110000007,700 psi @ 72° F6,400 psi @ 220° F2077K110000000
    3/4
    6000
    160
    7,100 psi @ 72° F5,900 psi @ 220° F2064K12000000———0
    1
    6000
    160
    6,400 psi @ 72° F5,300 psi @ 220° F2064K130000006,400 psi @ 72° F5,300 psi @ 220° F2077K13000000
    1 1/2
    6000
    160
    4,800 psi @ 72° F4,000 psi @ 220° F2064K14000000———0
    2
    6000
    160
    4,700 psi @ 72° F3,900 psi @ 220° F2064K15000000———0
     
    45° Elbow Connectors
    Image of Product. Front orientation. Pipe and Fittings. Extreme-Pressure Stainless Steel Socket-Connect Pipe Fittings, 45° Elbow Connectors, Socket Connect.

    Socket Connect

    304/304L Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.
    304/304L Stainless Steel
    Pipe
    Size
    Pressure
    Class
    Pipe
    Schedule
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    Socket Connect
    1/2
    6000
    160
    7,700 psi @ 72° F6,500 psi @ 220° F2064K220000000
    1
    6000
    160
    6,400 psi @ 72° F5,300 psi @ 220° F2064K24000000
     
    back to top