McMaster-Carr logo
    Filter by
    System of Measurement
    Pipe Schedule
    Industrial Info Compare
    Fitting Connection
    Industrial Info Compare
    Pipe Material
    Fitting Type
    Connects To
    For Use With
    Gender
    Threading
    Wall Thickness Rating
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Construction
    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)
    72 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 Aluminum Socket-Connect Pipe Fittings

    Socket-connect fittings 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. Fittings are aluminum, which is lightweight with good corrosion resistance.
    Straight Connectors
    Image of Product. Front orientation. Pipe and Fittings. Low-Pressure Aluminum Socket-Connect Pipe Fittings, Straight Connectors, Socket Connect.

    Socket Connect

    Pipe
    Size
    Pipe
    Schedule
    Material
    Each
    Socket Connect
    1/2
    		10
    		6061 Aluminum4657T21000000
    3/4
    		10
    		6061 Aluminum4657T2200000
    1
    		10
    		6061 Aluminum4657T2300000
    1 1/2
    		10
    		6061 Aluminum4657T2400000
    2
    		10
    		6061 Aluminum4657T2500000
    2 1/2
    		10
    		6061 Aluminum4657T2600000
    3
    		10
    		6061 Aluminum4657T2700000
    4
    		10
    		6061 Aluminum4657T2800000
     
    Straight Reducers
    Image of Product. Female × Female. Front orientation. Contains Annotated. Pipe and Fittings. Low-Pressure Aluminum Socket-Connect Pipe Fittings, Straight Reducers, Socket Connect Female × Socket Connect Female.

    Female × Female

    Pipe
    Size
    (A)
    (B)
    Pipe
    Schedule
    Material
    Each
    Socket Connect Female × Socket Connect Female
    1
    		3/4
    		10
    		6061 Aluminum4657T72000000
    1 1/2
    		1
    		10
    		6061 Aluminum4657T7300000
    2
    		1 1/2
    		10
    		6061 Aluminum4657T7400000
    3
    		2
    		10
    		6061 Aluminum4657T75000000
    4
    		3
    		10
    		6061 Aluminum4657T76000000
     
    90° Elbow Connectors
    Image of Product. Front orientation. Pipe and Fittings. Low-Pressure Aluminum Socket-Connect Pipe Fittings, 90° Elbow Connectors, Socket Connect.

    Socket Connect

    Pipe
    Size
    Pipe
    Schedule
    Material
    Each
    Socket Connect
    1/2
    		10
    		6061 Aluminum4657T11000000
    3/4
    		10
    		6061 Aluminum4657T1200000
    1
    		10
    		6061 Aluminum4657T1300000
    1 1/2
    		10
    		6061 Aluminum4657T1400000
    2
    		10
    		6061 Aluminum4657T15000000
    2 1/2
    		10
    		6061 Aluminum4657T16000000
    3
    		10
    		6061 Aluminum4657T17000000
    4
    		10
    		6061 Aluminum4657T18000000
     
    45° Elbow Connectors
    Image of Product. Front orientation. Pipe and Fittings. Low-Pressure Aluminum Socket-Connect Pipe Fittings, 45° Elbow Connectors, Socket Connect.

    Socket Connect

    Pipe
    Size
    Pipe
    Schedule
    Material
    Each
    Socket Connect
    1/2
    		10
    		6061 Aluminum4657T31000000
    3/4
    		10
    		6061 Aluminum4657T3200000
    1
    		10
    		6061 Aluminum4657T3300000
    1 1/2
    		10
    		6061 Aluminum4657T3400000
    2
    		10
    		6061 Aluminum4657T3500000
    3
    		10
    		6061 Aluminum4657T37000000
    4
    		10
    		6061 Aluminum4657T38000000
     
    Tee Connectors
    Image of Product. Front orientation. Pipe and Fittings. Low-Pressure Aluminum Socket-Connect Pipe Fittings, Tee Connectors, Socket Connect.

    Socket Connect

    Pipe
    Size
    Pipe
    Schedule
    Material
    Each
    Socket Connect
    1/2
    		10
    		6061 Aluminum4657T510000000
    1
    		10
    		6061 Aluminum4657T53000000
    1 1/2
    		10
    		6061 Aluminum4657T54000000
    2
    		10
    		6061 Aluminum4657T55000000
    2 1/2
    		10
    		6061 Aluminum4657T56000000
    3
    		10
    		6061 Aluminum4657T57000000
    4
    		10
    		6061 Aluminum4657T58000000
     

    Low-Pressure Aluminum Butt-Weld Pipe Fittings

    Also known as Schedule 10 fittings, these are the thinnest aluminum pipe fittings we offer. They have beveled ends that, when flush to pipe, create a trough for a strong weld that permits maximum flow. Fittings are lightweight and have good corrosion resistance.
    Straight Reducers
    Image of Product. Front orientation. Contains Annotated. Pipe and Fittings. Low-Pressure Aluminum 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
    1 1/2
    		1
    		Seamless10
    		6061 Aluminum4672T630000000
    2
    		1 1/2
    		Seamless10
    		6061 Aluminum4672T64000000
    3
    		2
    		Seamless10
    		6061 Aluminum4672T65000000
    4
    		3
    		Seamless10
    		6061 Aluminum4672T66000000
     
    90° Elbow Connectors
    Image of Product. Front orientation. Pipe and Fittings. Low-Pressure Aluminum Butt-Weld Pipe Fittings, 90° Elbow Connectors, Butt Weld.

    Butt Weld

    Pipe
    Size
    Construction
    OD
    Pipe
    Schedule
    Material
    Each
    Butt Weld
    1/2
    		Seamless27/32"10
    		6061 Aluminum4672T110000000
    3/4
    		Seamless1 3/64"10
    		6061 Aluminum4672T6700000
    1
    		Seamless1 5/16"10
    		6061 Aluminum4672T1300000
    1 1/4
    		Seamless1 21/32"10
    		6061 Aluminum4672T14000000
    1 1/2
    		Seamless1 29/32"10
    		6061 Aluminum4672T1500000
    2
    		Seamless2 3/8"10
    		6061 Aluminum4672T16000000
    2 1/2
    		Seamless2 7/8"10
    		6061 Aluminum4672T17000000
    3
    		Seamless3 1/2"10
    		6061 Aluminum4672T18000000
    4
    		Seamless4 1/2"10
    		6061 Aluminum4672T19000000
     
    45° Elbow Connectors
    Image of Product. Front orientation. Pipe and Fittings. Low-Pressure Aluminum Butt-Weld Pipe Fittings, 45° Elbow Connectors, Butt Weld.

    Butt Weld

    Pipe
    Size
    Construction
    OD
    Pipe
    Schedule
    Material
    Each
    Butt Weld
    3/4
    		Seamless1 3/64"10
    		6061 Aluminum4672T680000000
    1
    		Seamless1 5/16"10
    		6061 Aluminum4672T23000000
    1 1/4
    		Seamless1 21/32"10
    		6061 Aluminum4672T24000000
    1 1/2
    		Seamless1 29/32"10
    		6061 Aluminum4672T25000000
    2
    		Seamless2 3/8"10
    		6061 Aluminum4672T26000000
    2 1/2
    		Seamless2 7/8"10
    		6061 Aluminum4672T27000000
    3
    		Seamless3 1/2"10
    		6061 Aluminum4672T28000000
    4
    		Seamless4 1/2"10
    		6061 Aluminum4672T29000000
     

    High-Pressure Aluminum Butt-Weld Pipe Fittings

    Thick walls give these Schedule 80 fittings excellent strength. They have beveled ends that, when flush to pipe, create a trough for a strong weld that permits maximum flow. Fittings are aluminum, which is lightweight with good corrosion resistance.
    Straight Reducers
    Image of Product. Front orientation. Contains Annotated. Pipe and Fittings. High-Pressure Aluminum 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
    2
    		1 1/2
    		Seamless80
    		6061 Aluminum4684T640000000
    3
    		2
    		Seamless80
    		6061 Aluminum4684T65000000
    4
    		3
    		Seamless80
    		6061 Aluminum4684T66000000
     
    90° Elbow Connectors
    Image of Product. Front orientation. Pipe and Fittings. High-Pressure Aluminum Butt-Weld Pipe Fittings, 90° Elbow Connectors, Butt Weld.

    Butt Weld

    Pipe
    Size
    Construction
    OD
    Pipe
    Schedule
    Material
    Each
    Butt Weld
    1/2
    		Seamless27/32"80
    		6061 Aluminum4684T110000000
    3/4
    		Seamless1 3/64"80
    		6061 Aluminum4684T12000000
    1
    		Seamless1 5/16"80
    		6061 Aluminum4684T13000000
    1 1/4
    		Seamless1 21/32"80
    		6061 Aluminum4684T14000000
    1 1/2
    		Seamless1 29/32"80
    		6061 Aluminum4684T15000000
    2
    		Seamless2 3/8"80
    		6061 Aluminum4684T16000000
    2 1/2
    		Seamless2 7/8"80
    		6061 Aluminum4684T17000000
    3
    		Seamless3 1/2"80
    		6061 Aluminum4684T18000000
    4
    		Seamless4 1/2"80
    		6061 Aluminum4684T19000000
     
    45° Elbow Connectors
    Image of Product. Front orientation. Pipe and Fittings. High-Pressure Aluminum Butt-Weld Pipe Fittings, 45° Elbow Connectors, Butt Weld.

    Butt Weld

    Pipe
    Size
    Construction
    OD
    Pipe
    Schedule
    Material
    Each
    Butt Weld
    1 1/2
    		Seamless1 29/32"80
    		6061 Aluminum4684T250000000
    2
    		Seamless2 3/8"80
    		6061 Aluminum4684T26000000
    3
    		Seamless3 1/2"80
    		6061 Aluminum4684T28000000
    4
    		Seamless4 1/2"80
    		6061 Aluminum4684T29000000
     
    back to top