McMaster-Carr logo
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    77 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.

    Thick-Wall Galvanized Iron and Steel Threaded Pipe Nipples and Pipe

    Made of galvanized iron or steel, this pipe has fair corrosion resistance. It has thick, Schedule 80 walls for good strength in high-pressure applications.
    Pipe Reducers—Threaded on Both Ends
    Image of Product. Male. Front orientation. Contains Annotated. Pipe and Fittings. Thick-Wall Galvanized Iron and Steel Threaded Pipe Nipples and Pipe, Pipe Reducers—Threaded on Both Ends, Male, Threaded Fitting Connection.

    Male

    Straight reducers are also known as swage nipples.
    Seamless—Pipe has a smooth interior for unrestricted flow and is stronger than welded pipe.
    Pipe
    Size
    (A)
    (B)
    Lg.
    Construction
    Pipe
    Schedule
    Each
    NPT Male × NPT Male
    1/4
    1/8
    2 1/4"Seamless80
    7818K231000000
    3/8
    1/4
    2 1/2"Seamless80
    7818K23200000
    1/2
    1/8
    2 3/4"Seamless80
    7818K23300000
    1/2
    1/4
    2 3/4"Seamless80
    7818K21100000
    1/2
    3/8
    2 3/4"Seamless80
    7818K21200000
    3/4
    1/8
    3"Seamless80
    7818K23700000
    3/4
    1/4
    3"Seamless80
    7818K21300000
    3/4
    1/2
    3"Seamless80
    7818K21400000
    1
    1/8
    3 1/2"Seamless80
    7818K23400000
    1
    1/4
    3 1/2"Seamless80
    7818K23500000
    1
    3/8
    3 1/2"Seamless80
    7818K23600000
    1
    1/2
    3 1/2"Seamless80
    7818K21500000
    1
    3/4
    3 1/2"Seamless80
    7818K21600000
    1 1/4
    1/2
    4"Seamless80
    7818K21700000
    1 1/4
    3/4
    4"Seamless80
    7818K21800000
    1 1/4
    1
    4"Seamless80
    7818K21900000
    1 1/2
    1/2
    4 1/2"Seamless80
    7818K22100000
    1 1/2
    3/4
    4 1/2"Seamless80
    7818K22200000
    1 1/2
    1
    4 1/2"Seamless80
    7818K22300000
    1 1/2
    1 1/4
    4 1/2"Seamless80
    7818K22400000
    2
    1/4
    6 1/2"Seamless80
    7818K238000000
    2
    1/2
    6 1/2"Seamless80
    7818K225000000
    2
    3/4
    6 1/2"Seamless80
    7818K226000000
    2
    1
    6 1/2"Seamless80
    7818K22700000
    2
    1 1/4
    6 1/2"Seamless80
    7818K228000000
    2
    1 1/2
    6 1/2"Seamless80
    7818K22900000
    2 1/2
    3/4
    7"Seamless80
    7818K239000000
    2 1/2
    1
    7"Seamless80
    7818K241000000
    2 1/2
    1 1/4
    7"Seamless80
    7818K242000000
    2 1/2
    1 1/2
    7"Seamless80
    7818K243000000
    2 1/2
    2
    7"Seamless80
    7818K244000000
    3
    1/2
    8"Seamless80
    7818K245000000
    3
    3/4
    8"Seamless80
    7818K246000000
    3
    1
    8"Seamless80
    7818K247000000
    3
    1 1/4
    8"Seamless80
    7818K248000000
    3
    1 1/2
    8"Seamless80
    7818K249000000
    3
    2
    8"Seamless80
    7818K251000000
    3
    2 1/2
    8"Seamless80
    7818K252000000
    4
    1/2
    9"Seamless80
    7818K253000000
    4
    3/4
    9"Seamless80
    7818K254000000
    4
    1
    9"Seamless80
    7818K255000000
    4
    1 1/4
    9"Seamless80
    7818K256000000
    4
    1 1/2
    9"Seamless80
    7818K257000000
    4
    2
    9"Seamless80
    7818K258000000
    4
    2 1/2
    9"Seamless80
    7818K259000000
    4
    3
    9"Seamless80
    7818K261000000
     

    Thick-Wall Stainless Steel Threaded Pipe Nipples and Pipe

    Thick walls, also known as Schedule 80, give this pipe the strength to handle high-pressure applications.
    Pipe Reducers—Threaded on Both Ends
    Image of Product. Male x Male. Front orientation. Contains Annotated. Pipe and Fittings. Thick-Wall Stainless Steel Threaded Pipe Nipples and Pipe, Pipe Reducers—Threaded on Both Ends, Male, Threaded Fitting Connection.

    Male x Male

    Straight reducers are also known as swage nipples.
    304/304L Stainless Steel—Pipe holds up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.
    Seamless—Pipe has a smooth interior for unrestricted flow and is stronger than welded pipe.
    Pipe
    Size
    304/304L
    Stainless Steel
    (A)
    (B)
    Lg.
    Construction
    Pipe
    Schedule
    Each
    NPT Male × NPT Male
    3/8
    1/4
    2 1/2"Seamless80
    2161K28000000
    1/2
    1/4
    2 3/4"Seamless80
    2161K1100000
    1/2
    3/8
    2 3/4"Seamless80
    2161K1200000
    3/4
    1/4
    3"Seamless80
    2161K1300000
    3/4
    3/8
    3"Seamless80
    2161K2900000
    3/4
    1/2
    3"Seamless80
    2161K1400000
    1
    1/4
    3 1/2"Seamless80
    2161K3200000
    1
    3/8
    3 1/2"Seamless80
    2161K3300000
    1
    1/2
    3 1/2"Seamless80
    2161K1500000
    1
    3/4
    3 1/2"Seamless80
    2161K1600000
    1 1/4
    3/4
    4"Seamless80
    2161K34000000
    1 1/4
    1
    4"Seamless80
    2161K17000000
    1 1/2
    1/2
    4 1/2"Seamless80
    2161K18000000
    1 1/2
    3/4
    4 1/2"Seamless80
    2161K19000000
    1 1/2
    1
    4 1/2"Seamless80
    2161K21000000
    1 1/2
    1 1/4
    4 1/2"Seamless80
    2161K22000000
    2
    1/2
    6 1/2"Seamless80
    2161K23000000
    2
    3/4
    6 1/2"Seamless80
    2161K24000000
    2
    1
    6 1/2"Seamless80
    2161K25000000
    2
    1 1/4
    6 1/2"Seamless80
    2161K26000000
    2
    1 1/2
    6 1/2"Seamless80
    2161K27000000
     

    Medium-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

    A galvanized finish gives these fittings fair corrosion resistance. They have the strength to handle medium-pressure applications.
    Plugs
    Image of Product. Male. Front orientation. Pipe and Fittings. Medium-Pressure Galvanized Iron and Steel Threaded Pipe Fittings, Plugs, Threaded Fitting Connection, Male, Round Body.

    Male

    Plugs are also known as bull plugs; the center is hollow, which allows fluid to put pressure on the threads for a tight seal.
    Pipe
    Size
    Construction
    Pipe
    Schedule
    Body
    Shape
    Material
    Each
    NPT Male
    1/8
    Hollow80
    RoundGalvanized Steel1109T11000000
    1/4
    Hollow80
    RoundGalvanized Steel1109T1200000
    3/8
    Hollow80
    RoundGalvanized Steel1109T1300000
    1 1/4
    Hollow80
    RoundGalvanized Steel1109T1700000
    1 1/2
    Hollow80
    RoundGalvanized Steel1109T1800000
    2
    Hollow80
    RoundGalvanized Steel1109T19000000
    4
    Hollow80
    RoundGalvanized Steel1109T22000000
     
    External-Hex-Drive Plugs
    Image of Product. Male. Front orientation. Pipe and Fittings. Medium-Pressure Galvanized Iron and Steel Threaded Pipe Fittings, External-Hex-Drive Plugs, Threaded Fitting Connection, Male, Hex Body.

    Male

    Plugs are also known as bull plugs; the center is hollow, which allows fluid to put pressure on the threads for a tight seal.
    Pipe
    Size
    Construction
    Pipe
    Schedule
    Body
    Shape
    Material
    Each
    NPT Male
    1/2
    Hollow80
    HexGalvanized Steel1109T14000000
    3/4
    Hollow80
    HexGalvanized Steel1109T1500000
    1
    Hollow80
    HexGalvanized Steel1109T1600000
     
    back to top