McMaster-Carr logo
    Filter by
    System of Measurement
    Pipe Schedule
    Industrial Info Snippet
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    23,533 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.

    Plastic Pipe Fittings for Oil

    Made of corrosion-resistant plastic, these fittings won’t deteriorate when used in oil applications. They also have high strength and impact resistance.
    To prevent leaks in threaded connections, apply a sealant to the male threads. Threaded connections can be taken apart as needed for maintenance and repair. For metal threads, use PTFE tape. For plastic threads, apply a non-hardening, plastic-compatible sealant. Tape or sealants with PTFE are not recommended for plastic-to-plastic connections. When making a threaded connection be careful not to overtighten the threads. To prevent cracks and leaks, finger tighten the fitting, then wrench-tighten one to two turns.
    Warning: Never use plastic pipe fittings, flanges, and pipe with compressed air or gas.
    Straight Connectors
    Image of Product. Female. Front orientation. Pipe and Fittings. Plastic Pipe Fittings for Oil, Straight Connectors, Threaded Fitting Connection, Female, Hex Body.

    Female

    Image of Product. Male. Front orientation. Pipe and Fittings. Plastic Pipe Fittings for Oil, Straight Connectors, Male, Threaded Fitting Connection, Hex Body.

    Male

    Pipe
    Size
    Thread
    Size
    Body
    Shape
    Material
    Color
    Max. Pressure
    @ Temp.
    Each
    NPT Female
    1/8
    HexNylonGray200 psi @ 72° F3736K18400000
    1/4
    HexNylonGray200 psi @ 72° F3736K1850000
    3/8
    HexNylonGray200 psi @ 72° F3736K1860000
    1/2
    HexNylonGray200 psi @ 72° F3736K1870000
    3/4
    HexNylonWhite150 psi @ 72° F8316T5190000
    1
    HexNylonWhite150 psi @ 72° F8316T52100000
     
    NPT Male
    1/8
    HexNylonGray200 psi @ 72° F3736K1340000
    1/4
    HexNylonGray200 psi @ 72° F3736K1350000
    3/8
    HexNylonGray200 psi @ 72° F3736K1360000
    1/2
    HexNylonGray200 psi @ 72° F3736K1370000
     
    BSPT Female
    1/8
    HexNylonBlue200 psi @ 72° F3736K1780000
    1/4
    HexNylonBlue200 psi @ 72° F3736K1790000
    3/8
    HexNylonBlue200 psi @ 72° F3736K1810000
    1/2
    HexNylonBlue200 psi @ 72° F3736K1820000
    3/4
    HexNylonBlue200 psi @ 72° F3736K1830000
     
    UNF Female
    10-32
    NylonWhite120 psi @ 72° F8316T290000
    1/4"-28
    NylonWhite120 psi @ 72° F8316T3200000
     
    UNF Male
    10-32
    HexNylonWhite120 psi @ 72° F8316T440000
     
    Through-Wall Straight Connectors for Tanks with Gasket
    Image of Product. Female. Front orientation. Pipe and Fittings. Plastic Pipe Fittings for Oil, Through-Wall Straight Connectors for Tanks with Gasket, Threaded Fitting Connection, Female, For Flat Tank Surface, For Curved Tank Surface.
    Image of Product. Front orientation. Pipe Gaskets.

    Female

    Replacement

    Gaskets

    Through-wall fittings are also known as bulkhead couplings; they mount through your wall or tank to create an inlet or outlet. When installing, the gasket should be on the inside of the wall.
    Fittings for tanks create an inlet or outlet connection on the surface of any tank, pressure vessel, or drum.
    Straights
    Replacement
    Gaskets
    Pipe
    Size
    For Hole
    Dia.
    For Max.
    Wall Thk.
    For Tank
    Surface
    Material
    Color
    Max. Pressure
    @ Temp.
    Gasket
    Material
    Each
    Each
    NPT Female
    3/4
    1 11/16"7/16"Curved, FlatPolyethyleneBlack120 psi @ 72° FEPDM
    3736K20000003736K21100000
    1
    2 5/8"9/16"Curved, FlatPolyethyleneBlack120 psi @ 72° FEPDM
    3736K3000003736K4110000
    1 1/4
    2 5/8"9/16"Curved, FlatPolyethyleneBlack120 psi @ 72° FEPDM
    3736K5000003736K4110000
    1 1/2
    2 5/8"9/16"Curved, FlatPolyethyleneBlack120 psi @ 72° FEPDM
    3736K4000003736K4110000
    Plastic Pipe Fitting for Oil, Through-Wall Straight Connector, 1-1/2 NPT
    EachIn stock
    2
    3 1/4"9/16"Curved, FlatPolyethyleneBlack120 psi @ 72° FEPDM
    3736K6000003736K6110000
     
    Straight Adapters
    Image of Product. Female × Male. Front orientation. Pipe and Fittings. Plastic Pipe Fittings for Oil, Straight Adapters, Male, Female, Threaded Fitting Connection, Hex Body.

    Female × Male

    Pipe
    Size
    (A)
    (B)
    Body
    Shape
    Material
    Color
    Max. Pressure
    @ Temp.
    Each
    NPT Female × NPT Male
    1/8
    1/8
    HexNylonGray200 psi @ 72° F3736K15700000
    1/4
    1/4
    HexNylonGray200 psi @ 72° F3736K1630000
    3/8
    3/8
    HexNylonGray200 psi @ 72° F3736K1680000
    1/2
    1/2
    HexNylonGray200 psi @ 72° F3736K1740000
     
    Straight Reducing Adapters
    Image of Product. Female × Male. Front orientation. Contains Annotated. Pipe and Fittings. Plastic Pipe Fittings for Oil, Straight Reducing Adapters, Male, Female, Threaded Fitting Connection, Hex Body.

    Female × Male

    Pipe
    Size
    (A)
    (B)
    Body
    Shape
    Material
    Color
    Max. Pressure
    @ Temp.
    Each
    NPT Female × NPT Male
    1/8
    1/4
    HexNylonGray200 psi @ 72° F3736K15800000
    1/8
    3/8
    HexNylonGray200 psi @ 72° F3736K1590000
    1/8
    1/2
    HexNylonGray200 psi @ 72° F3736K1610000
    1/4
    1/8
    HexNylonGray200 psi @ 72° F3736K1620000
    1/4
    3/8
    HexNylonGray200 psi @ 72° F3736K1640000
    1/4
    1/2
    HexNylonGray200 psi @ 72° F3736K1650000
    3/8
    1/8
    HexNylonGray200 psi @ 72° F3736K1660000
    3/8
    1/4
    HexNylonGray200 psi @ 72° F3736K1670000
    3/8
    1/2
    HexNylonGray200 psi @ 72° F3736K1690000
    1/2
    1/8
    HexNylonGray200 psi @ 72° F3736K1710000
    1/2
    1/4
    HexNylonGray200 psi @ 72° F3736K1720000
    1/2
    3/8
    HexNylonGray200 psi @ 72° F3736K1730000
     
    BSPT Female × BSPT Male
    1/2
    3/8
    HexNylonBlue200 psi @ 72° F3736K1550000
     
    Bushing Straight Reducing Adapters
    Image of Product. Female × Male. Front orientation. Contains Annotated. Pipe and Fittings. Plastic Pipe Fittings for Oil, Bushing Straight Reducing Adapters, Male, Female, Threaded Fitting Connection, Hex Body.

    Female × Male

    Pipe
    Size
    (A)
    (B)
    Body
    Shape
    Material
    Color
    Max. Pressure
    @ Temp.
    Each
    NPT Female × NPT Male
    1/8
    1/4
    HexNylonGray200 psi @ 72° F3736K71100000
    1/8
    3/8
    HexNylonGray200 psi @ 72° F3736K7120000
    1/8
    1/2
    HexNylonGray200 psi @ 72° F3736K7140000
    1/4
    3/8
    HexNylonGray200 psi @ 72° F3736K7130000
    1/4
    1/2
    HexNylonGray200 psi @ 72° F3736K7150000
    1/4
    3/4
    HexNylonGray200 psi @ 72° F3736K1750000
    3/8
    1/2
    HexNylonGray200 psi @ 72° F3736K7160000
    3/8
    3/4
    HexNylonGray200 psi @ 72° F3736K1760000
    1/2
    3/4
    HexNylonGray200 psi @ 72° F3736K1770000
     
    Straight Reducers
    Image of Product. Female × Female. Front orientation. Contains Annotated. Pipe and Fittings. Plastic Pipe Fittings for Oil, Straight Reducers, Female, Threaded Fitting Connection, Hex Body.

    Female × Female

    Image of Product. Male × Male. Front orientation. Contains Annotated. Pipe and Fittings. Plastic Pipe Fittings for Oil, Straight Reducers, Male, Threaded Fitting Connection, Hex Body.

    Male × Male

    Pipe
    Size
    (A)
    (B)
    Body
    Shape
    Material
    Color
    Max. Pressure
    @ Temp.
    Each
    NPT Female × NPT Female
    1/4
    1/8
    HexNylonGray200 psi @ 72° F3736K19600000
    3/8
    1/8
    HexNylonGray200 psi @ 72° F3736K1970000
    3/8
    1/4
    HexNylonGray200 psi @ 72° F3736K1980000
    1/2
    1/4
    HexNylonGray200 psi @ 72° F3736K1990000
    1/2
    3/8
    HexNylonGray200 psi @ 72° F3736K2120000
     
    NPT Male × NPT Male
    1/4
    1/8
    HexNylonGray200 psi @ 72° F3736K1180000
    3/8
    1/8
    HexNylonGray200 psi @ 72° F3736K1190000
    3/8
    1/4
    HexNylonGray200 psi @ 72° F3736K1230000
    1/2
    1/8
    HexNylonGray200 psi @ 72° F3736K1210000
    1/2
    1/4
    HexNylonGray200 psi @ 72° F3736K1240000
    1/2
    3/8
    HexNylonGray200 psi @ 72° F3736K1260000
    3/4
    1/4
    HexNylonGray200 psi @ 72° F3736K1250000
    3/4
    3/8
    HexNylonGray200 psi @ 72° F3736K1270000
    3/4
    1/2
    HexNylonGray200 psi @ 72° F3736K1280000
     
    BSPT Female × BSPT Female
    1/4
    1/8
    HexNylonBlue200 psi @ 72° F3736K1880000
    3/8
    1/4
    HexNylonBlue200 psi @ 72° F3736K1910000
    1/2
    1/4
    HexNylonBlue200 psi @ 72° F3736K1920000
    3/4
    1/4
    HexNylonBlue200 psi @ 72° F3736K1940000
    3/4
    1/2
    HexNylonBlue200 psi @ 72° F3736K1950000
     
    90° Elbow Connectors
    Image of Product. Male. Front orientation. Pipe and Fittings. Plastic Pipe Fittings for Oil, 90° Elbow Connectors, Threaded Fitting Connection, Male.

    Male

    Pipe
    Size
    Material
    Color
    Max. Pressure
    @ Temp.
    Each
    NPT Male
    1/8
    NylonGray200 psi @ 72° F3736K21700000
    1/4
    NylonGray200 psi @ 72° F3736K2180000
     
    90° Elbow Adapters
    Image of Product. Female × Male. Front orientation. Pipe and Fittings. Plastic Pipe Fittings for Oil, 90° Elbow Adapters, Male, Female, Threaded Fitting Connection.

    Female × Male

    Female x male 90° elbow adapters are also known as street elbows.
    Pipe
    Size
    (A)
    (B)
    Material
    Color
    Max. Pressure
    @ Temp.
    Each
    NPT Female × NPT Male
    1/8
    1/8
    NylonWhite150 psi @ 72° F8316T51100000
    1/4
    1/4
    NylonWhite150 psi @ 72° F8316T5120000
    3/8
    3/8
    NylonWhite150 psi @ 72° F8316T5130000
    1/2
    1/2
    NylonWhite150 psi @ 72° F8316T5140000
    3/4
    3/4
    NylonWhite150 psi @ 72° F8316T5150000
     
    90° Elbow Reducers
    Image of Product. Male × Male. Front orientation. Contains Annotated. Pipe and Fittings. Plastic Pipe Fittings for Oil, 90° Elbow Reducers, Threaded Fitting Connection, Male.

    Male × Male

    Pipe
    Size
    (A)
    (B)
    Material
    Color
    Max. Pressure
    @ Temp.
    Each
    NPT Male × NPT Male
    1/4
    1/8
    NylonGray200 psi @ 72° F3736K22300000
     
    BSPT Male × BSPT Male
    1/4
    1/8
    NylonBlue200 psi @ 72° F3736K2190000
     
    Tee Connectors
    Image of Product. Male. Front orientation. Pipe and Fittings. Plastic Pipe Fittings for Oil, Tee Connectors, Threaded Fitting Connection, Male.

    Male

    Pipe
    Size
    Material
    Color
    Max. Pressure
    @ Temp.
    Each
    NPT Male
    1/8
    NylonGray200 psi @ 72° F3736K24600000
    1/4
    NylonGray200 psi @ 72° F3736K2470000
     
    External-Hex-Drive Caps
    Image of Product. Female. Front orientation. Pipe and Fittings. Plastic Pipe Fittings for Oil, External-Hex-Drive Caps, Female, Threaded Fitting Connection, Hex Body.

    Female

    Pipe
    Size
    Body
    Shape
    Material
    Color
    Max. Pressure
    @ Temp.
    Each
    BSPT Female
    1/8
    HexNylonBlue200 psi @ 72° F3736K23600000
    1/4
    HexNylonBlue200 psi @ 72° F3736K2370000
    3/8
    HexNylonBlue200 psi @ 72° F3736K2380000
    1/2
    HexNylonBlue200 psi @ 72° F3736K2390000
    3/4
    HexNylonBlue200 psi @ 72° F3736K2410000
     
    External-Hex-Drive Plugs
    Image of Product. Male. Front orientation. Pipe and Fittings. Plastic Pipe Fittings for Oil, External-Hex-Drive Plugs, Male, Threaded Fitting Connection.
    Image of Product. Male Hex Body. Front orientation. Pipe and Fittings. Plastic Pipe Fittings for Oil, External-Hex-Drive Plugs, Threaded Fitting Connection, Male, Hex Body.

    Male

    Male Hex Body

    Pipe
    Size
    Thread Size
    Body
    Shape
    Material
    Color
    Max. Pressure
    @ Temp.
    Pkg.
    Qty.
    Pkg.
    NPT Male
    1/16
    PVDFWhiteNot Rated18316T4600000
    1/8
    HexNylonGray200 psi @ 72° F13736K2310000
    1/4
    HexNylonGray200 psi @ 72° F13736K2320000
    3/8
    HexNylonGray200 psi @ 72° F13736K2330000
    1/2
    HexNylonGray200 psi @ 72° F13736K2340000
    3/4
    HexNylonGray200 psi @ 72° F13736K2350000
    1
    HexNylonWhite150 psi @ 72° F18316T5160000
    1 1/4
    HexNylonWhite150 psi @ 72° F18316T5170000
     
    BSPT Male
    1/8
    HexNylonBlue200 psi @ 72° F13736K2240000
    1/4
    HexNylonBlue200 psi @ 72° F13736K2250000
    3/8
    HexNylonBlue200 psi @ 72° F13736K2260000
    1/2
    HexNylonBlue200 psi @ 72° F13736K2270000
    3/4
    HexNylonBlue200 psi @ 72° F13736K2280000
    1
    HexNylonBlue200 psi @ 72° F13736K2290000
     
    UNF Male
    10-32
    NylonWhite120 psi @ 72° F18316T330000
    1/4"-28
    NylonWhite120 psi @ 72° F18316T350000
     
    Metric Male
    M8 × 1 mmPolyethyleneYellowNot Rated104956N230000
    M10 × 1.5 mmPolyethyleneYellowNot Rated104956N250000
    M12 × 1.5 mmPolyethyleneYellowNot Rated104956N270000
    M16 × 1.5 mmPolyethyleneYellowNot Rated104956N290000
    M20 × 1.5 mmPolyethyleneYellowNot Rated104956N320000
    M22 × 1.5 mmPolyethyleneYellowNot Rated104956N330000
    M30 × 1.5 mmPolyethyleneYellowNot Rated54956N380000
    M32 × 1.5 mmPolyethyleneYellowNot Rated54956N4100000
     
    Finger-Grip Plugs
    Image of Product. Male. Front orientation. Pipe and Fittings. Plastic Pipe Fittings for Oil, Finger-Grip Plugs, Threaded Fitting Connection, Male.

    Male

    Adjust finger-grip fittings by hand, no tools required.
    Pipe
    Size
    Material
    Color
    Max. Pressure
    @ Temp.
    Pkg.
    Qty.
    Pkg.
    BSPP Male
    1/4
    PolyethyleneRedNot Rated104956N1200000
    1/2
    PolyethyleneRedNot Rated104956N130000
    5/8
    PolyethyleneRedNot Rated104956N140000
    3/4
    PolyethyleneRedNot Rated104956N150000
    1
    PolyethyleneRedNot Rated104956N170000
    1 1/4
    PolyethyleneRedNot Rated54956N180000
     
    Thread Sealant
    Image of Product. Front orientation. Thread Sealants. Applicator-Top Can.

    Applicator-Top Can

    Sealants cannot be sold to Colorado, Connecticut, District of Columbia, Delaware, Illinois, Indiana, Massachusetts, Maryland, Maine, Michigan, New Hampshire, New Jersey, Northern Virginia, New York, Ohio, Pennsylvania, Rhode Island, or Utah due to local VOC (Volatile Organic Compounds) regulations.
    Container
    Size, fl.
    oz.
    Type
    Temp. Range,
    ° F
    Each
    8Applicator-Top Can-100 to 6004586K9000000
    Nuts
    Image of Product. Front orientation. Pipe Locknuts.
    Pipe
    Size
    Thread Size
    Thread
    Direction
    Material
    Color
    Max. Pressure
    @ Temp.
    Each
    BSPT Thread
    1/2
    Right Hand
    Nylon
    White200 psi @ 72° F3736K11100000
     
    Metric Thread
    M20 × 1.5 mmRight Hand
    Nylon
    Blue200 psi @ 72° F3736K1120000
     
    back to top
    Other Pipe and Fittings
    Stainless Steel Threaded Pipe and Fittings
    Plastic Pipe and Fittings
    Iron and Steel Threaded Pipe and Fittings
    Brass and Bronze Threaded Pipe and Fittings
    Galvanized Iron and Steel Threaded Pipe and Fittings
    Aluminum Threaded Pipe and Fittings
    Stainless Steel Unthreaded Pipe and Fittings
    Aluminum Unthreaded Pipe and Fittings
    Iron and Steel Unthreaded Pipe and Fittings
    Drain, Waste, and Vent Pipe and Fittings