McMaster-Carr logo
    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)
    38 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.

    Fitting Type

    Fitting Type

    Low-Pressure Iron and Steel Butt-Weld Pipe Fittings

    Butt-weld fittings allow for a smooth connection that provides maximum flow. They have beveled ends that, when flush to pipe, create a trough for a strong, permanent weld. Fittings are also known as Schedule 40. They are for use in noncorrosive environments.
    Straight Reducers
    Image of Product. Front orientation. Contains Annotated. Pipe and Fittings. Low-Pressure Iron and Steel Butt-Weld Pipe Fittings, Straight Reducers, Butt Weld × Butt Weld.

    Butt Weld × Butt Weld

    Pipe
    Size
    (A)
    (B)
    Construction
    Pipe
    Schedule
    Material
    Each
    Butt Weld × Butt Weld
    10
    		6
    		Seamless40
    		Steel43425K4840000000
    10
    		8
    		Seamless40
    		Steel43425K485000000
     
    Long 90° Elbow Connectors
    Image of Product. Front orientation. Pipe and Fittings. Low-Pressure Iron and Steel Butt-Weld Pipe Fittings, Long 90° Elbow Connectors, Butt Weld.

    Butt Weld

    Pipe
    Size
    Construction
    OD
    Pipe
    Schedule
    Material
    Each
    Butt Weld
    10
    		Seamless10 3/4"40
    		Steel43425K2510000000
     
    45° Elbow Connectors
    Image of Product. Front orientation. Pipe and Fittings. Low-Pressure Iron and Steel Butt-Weld Pipe Fittings, 45° Elbow Connectors, Butt Weld.

    Butt Weld

    Pipe
    Size
    Construction
    OD
    Pipe
    Schedule
    Material
    Each
    Butt Weld
    10
    		Seamless10 3/4"40
    		Steel43425K2520000000
     
    Caps
    Image of Product. Front orientation. Pipe and Fittings. Low-Pressure Iron and Steel Butt-Weld Pipe Fittings, Caps, Butt Weld.

    Butt Weld

    Pipe
    Size
    Construction
    OD
    Pipe
    Schedule
    Material
    Each
    Butt Weld
    10
    		Seamless10 3/4"40
    		Steel43425K2560000000
     
    180° Bend Connectors
    Image of Product. Front orientation. Pipe Traps. Low-Pressure Iron and Steel Butt-Weld Pipe Fittings.
    180° bend connectors are also known as U-bends.
    Pipe
    Size
    Construction
    Pipe
    Schedule
    Material
    Shape
    Each
    Butt Weld
    6
    		Seamless40
    		Steel180° Bend43425K2330000000
     
    Stub-End Straight Adapters
    Image of Product. Straight Adapter. Front orientation. Pipe Stub Ends. Low-Pressure Iron and Steel Butt-Weld Pipe Fittings.

    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
    Flange
    OD
    Construction
    Pipe
    Schedule
    Finished
    Material
    Each
    6
    		8 1/2"Seamless40
    		Steel43425K2350000000
    8
    		10 5/8"Seamless40
    		Steel43425K245000000

    Low-Pressure Stainless Steel Butt-Weld Pipe Fittings

    Also known as Schedule 10 fittings, these are thin and lightweight. They have beveled ends that, when flush to pipe, create a trough for a strong weld that permits maximum flow.
    Straight Reducers
    Image of Product. Front orientation. Contains Annotated. Pipe and Fittings. Low-Pressure Stainless Steel Butt-Weld Pipe Fittings, Straight Reducers, Butt Weld × Butt Weld.

    Butt Weld × Butt Weld

    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.
    Pipe
    Size
    304/304L
    Stainless Steel
    316/316L
    Stainless Steel
    (A)
    (B)
    Construction
    Pipe
    Schedule
    Each
    Each
    Butt Weld × Butt Weld
    10
    		6
    		Welded10
    		45735K624000000043645K4730000000
    10
    		8
    		Welded10
    		45735K62500000043645K474000000
    12
    		10
    		Welded10
    		45735K628000000———0
     
    Stub-End Straight Adapters
    Image of Product. Straight Adapter. Front orientation. Pipe Stub Ends. Low-Pressure Stainless Steel Butt-Weld Pipe Fittings.

    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.
    304/304L
    Stainless Steel
    316/316L
    Stainless Steel
    Pipe
    Size
    Wall
    Thk.
    Flange
    OD
    Construction
    Pipe
    Schedule
    Each
    Each
    6
    		0.134"8 1/2"Welded10
    		45735K312000000043645K1540000000
    8
    		0.148"10 5/8"Welded10
    		45735K11600000043645K155000000
    10
    		0.134"12 3/4"Welded10
    		45735K622000000———0
    12
    		0.156"15"Welded10
    		45735K623000000———0

    Standard-Wall Plastic Pipe Fittings for Water

    Connect these fittings to Schedule 40 plastic pipe–they are the industry standard for residential and commercial low-pressure plumbing and water supply applications. They are plastic for good corrosion 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.
    Note: For fittings that are not rated for pressure, you can use the pressure rating of the plastic pipe as a reference. Threaded fittings are limited to 50% of the rated pressure of the pipe.
    Bushing Straight Reducing Adapters
    Image of Product. Cement Socket Male × NPT Female. Front orientation. Contains Annotated. Pipe and Fittings. Standard-Wall Plastic Pipe Fittings for Water, Bushing Straight Reducing Adapters, Cement Socket Male × Cement Socket Female, Hex Body.
    Image of Product. Cement Socket Male × Cement Socket Female. Front orientation. Contains Annotated. Pipe and Fittings. Standard-Wall Plastic Pipe Fittings for Water, Bushing Straight Reducing Adapters, Cement Socket Male × Cement Socket Female, Round Body.

    Cement Socket Male

    × NPT Female

    Cement Socket Male ×

    Cement Socket Female

    Cement-Socket Fitting Connection—Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a PVC primer and cement (also known as solvent weld).
    NSF/ANSI 61—To adhere to safety standards for drinking water systems, use pipe that meets NSF/ANSI 61.
    Pipe
    Size
    (A)
    (B)
    Pipe
    Schedule
    Body
    Shape
    Material
    Color
    Max. Pressure
    @ Temp.
    Food Industry
    Std.
    Each
    Cement Socket Male × Cement Socket Female
    10
    		6
    		40
    		HexPVCWhiteNot RatedNSF/ANSI 61
    		4880K0740000000
    10
    		8
    		40
    		RoundPVCWhiteNot RatedNSF/ANSI 61
    		4880K928000000
    12
    		10
    		40
    		RoundPVCWhiteNot RatedNSF/ANSI 61
    		4880K075000000
     
    Straight Reducers
    Image of Product. Female × Female. Front orientation. Contains Annotated. Pipe and Fittings. Standard-Wall Plastic Pipe Fittings for Water, Straight Reducers, Cement Socket Female × Cement Socket Female.

    Female × Female

    Cement-Socket Fitting Connection—Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a PVC primer and cement (also known as solvent weld).
    NSF/ANSI 61—To adhere to safety standards for drinking water systems, use pipe that meets NSF/ANSI 61.
    Pipe
    Size
    (A)
    (B)
    Pipe
    Schedule
    Material
    Color
    Max. Pressure
    @ Temp.
    Food Industry
    Std.
    Each
    Cement Socket Female × Cement Socket Female
    10
    		4
    		40
    		PVCWhiteNot RatedNSF/ANSI 61
    		4880K0250000000
    10
    		6
    		40
    		PVCWhiteNot RatedNSF/ANSI 61
    		4880K026000000
    10
    		8
    		40
    		PVCWhiteNot RatedNSF/ANSI 61
    		4880K911000000
    12
    		10
    		40
    		PVCWhiteNot RatedNSF/ANSI 61
    		4880K028000000
     
    Inline Tee Reducers
    Image of Product. Female. Front orientation. Contains Annotated. Pipe and Fittings. Standard-Wall Plastic Pipe Fittings for Water, Inline Tee Reducers, Cement Socket Female × Cement Socket Female × Cement Socket Female.

    Female

    Inline tees are also known as branch tees.
    Cement-Socket Fitting Connection—Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a PVC primer and cement (also known as solvent weld).
    NSF/ANSI 61—To adhere to safety standards for drinking water systems, use pipe that meets NSF/ANSI 61.
    Pipe
    Size
    (A)
    (B)
    (C)
    Pipe
    Schedule
    Material
    Color
    Max. Pressure
    @ Temp.
    Food Industry
    Std.
    Each
    Cement Socket Female × Cement Socket Female × Cement Socket Female
    10
    		8
    		10
    		40
    		PVCWhiteNot RatedNSF/ANSI 61
    		4880K9860000000
     

    Drain, Waste, and Vent PVC Clamp-On Pipe Fittings for Water

    To make installing and maintaining systems easy, these connectors come with clamps that form a strong seal on pipe and fittings once tightened.
    Warning: Never use plastic pipe fittings, flanges, and pipe with compressed air or gas.
    Straight Connectors
    Image of Product. Pipe End × Pipe End. Front orientation. Pipe and Fittings. Drain, Waste, and Vent PVC Clamp-On Pipe Fittings for Water, Straight Connectors, Clamp-On Female for Pipe Ends × Clamp-On Female for Pipe Ends.
    Image of Product. Pipe End × Pipe End—300 Series Stainless Steel Sleeve. Front orientation. Pipe and Fittings. Drain, Waste, and Vent PVC Clamp-On Pipe Fittings for Water, Straight Connectors, Clamp-On Female for Pipe Ends × Clamp-On Female for Pipe Ends.

    Pipe End × Pipe End

    Pipe End × Pipe End—300

    Series Stainless Steel

    Sleeve

    300 Series Stainless Steel Sleeve—Connectors with a stainless steel sleeve reinforce the connection to increase shear strength.
    For Pipe
    Size
    For Pipe
    OD
    Material
    Max. Pressure
    @ Temp.
    Clamp Material
    Sleeve Material
    Certification
    Each
    Clamp-On Female for Pipe Ends × Clamp-On Female for Pipe Ends
    10
    		10 3/4"PVC4 psi @ 72° F300 Series Stainless Steel300 Series Stainless Steel
    		ICC-ES Listed
    		4511K3410000000
     
    Straight Reducers
    Image of Product. Pipe End × Pipe End. Front orientation. Contains Annotated. Pipe and Fittings. Drain, Waste, and Vent PVC Clamp-On Pipe Fittings for Water, Straight Reducers, Clamp-On Female for Pipe Ends × Clamp-On Female for Pipe Ends.
    Image of Product. Pipe End × Pipe End—300 Series Stainless Steel Sleeve. Front orientation. Contains Annotated. Pipe and Fittings. Drain, Waste, and Vent PVC Clamp-On Pipe Fittings for Water, Straight Reducers, Clamp-On Female for Pipe Ends × Clamp-On Female for Pipe Ends.

    Pipe End × Pipe End

    Pipe End × Pipe End—300

    Series Stainless Steel Sleeve

    For
    Pipe Size
    (A)
    (B)
    Material
    Max. Pressure
    @ Temp.
    Clamp Material
    Certification
    Each
    Clamp-On Female for Pipe Ends × Clamp-On Female for Pipe Ends
    10
    		8
    		PVC4 psi @ 72° F300 Series Stainless SteelCSA Certified, ICC-ES Listed
    		4511K66000000
    10
    		8
    		PVC4 psi @ 72° F316 Stainless SteelCSA Certified, ICC-ES Listed
    		4693K6600000
    12
    		10
    		PVC4 psi @ 72° F300 Series Stainless SteelCSA Certified, ICC-ES Listed
    		4511K6700000
     

    Thick-Wall Plastic Pipe Fittings for Water

    Connect these fittings to Schedule 80 pipe. With thicker, stronger walls than standard-wall fittings, they can handle heavy duty supply applications, such as water processing, wastewater treatment, and irrigation. Fittings are plastic for good corrosion resistance. They meet ASTM specifications and testing requirements for material quality.
    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.
    Note: For fittings that are not rated for pressure, you can use the pressure rating of the plastic pipe as a reference. Threaded fittings are limited to 50% of the rated pressure of the pipe.
    Bushing Straight Reducing Adapters
    Image of Product. Cement Socket Male × Cement Socket Female. Front orientation. Contains Annotated. Pipe and Fittings. Thick-Wall Plastic Pipe Fittings for Water, Bushing Straight Reducing Adapters, Cement Socket Male × Cement Socket Female, Hex Body.

    Cement Socket Male

    × Cement Socket

    Female

    Cement-Socket Fitting Connection—Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a PVC primer and cement (also known as solvent weld).
    NSF/ANSI 61—To adhere to safety standards for drinking water systems, use pipe that meets NSF/ANSI 61.
    Pipe
    Size
    (A)
    (B)
    Pipe
    Schedule
    Body
    Shape
    Material
    Color
    Max. Pressure
    @ Temp.
    Food Industry
    Std.
    Each
    Cement Socket Male × Cement Socket Female
    10
    		4
    		80
    		HexPVCDark GrayNot RatedNSF/ANSI 61
    		4881K4130000000
    10
    		6
    		80
    		HexPVCDark GrayNot RatedNSF/ANSI 61
    		4881K693000000
    10
    		8
    		80
    		HexPVCDark GrayNot RatedNSF/ANSI 61
    		4881K694000000
    12
    		10
    		80
    		HexPVCDark GrayNot RatedNSF/ANSI 61
    		4881K415000000
     
    Straight Reducers
    Image of Product. Cement Socket Female × Cement Socket Female. Front orientation. Contains Annotated. Pipe and Fittings. Thick-Wall Plastic Pipe Fittings for Water, Straight Reducers, Cement Socket Female × Cement Socket Female.

    Cement Socket Female ×

    Cement Socket Female

    Cement-Socket Fitting Connection—Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a PVC primer and cement (also known as solvent weld).
    NSF/ANSI 61—To adhere to safety standards for drinking water systems, use pipe that meets NSF/ANSI 61.
    Pipe
    Size
    (A)
    (B)
    Pipe
    Schedule
    Material
    Color
    Max. Pressure
    @ Temp.
    Food Industry
    Std.
    Each
    Cement Socket Female × Cement Socket Female
    10
    		6
    		80
    		PVCDark GrayNot RatedNSF/ANSI 61
    		4881K7540000000
    10
    		8
    		80
    		PVCDark GrayNot RatedNSF/ANSI 61
    		4881K067000000
    12
    		10
    		80
    		PVCDark GrayNot RatedNSF/ANSI 61
    		4881K069000000
     
    back to top