McMaster-Carr logo
    Filter by
    Product Family
    System of Measurement
    Thread Type
    Pressure Class
    Industrial Info Compare
    Gender
    Pipe Schedule
    Industrial Info Snippet
    Connects To
    Fitting Connection
    Body Shape
    Maximum Pressure @ Temperature
    Industrial Info Snippet
    Maximum Steam Pressure @ Temperature
    For Flange Class
    Industrial Info Snippet
    Specifications Met
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Industrial Info Compare
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    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)
    20 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.

    Medium-Pressure Stainless Steel Threaded Pipe Fittings

    Choose these fittings when you want the same high-quality found in our low-pressure pipe fittings, but need more strength to handle higher pressures.
    Union Straight Connectors
    Image of System. Female. Front orientation. Exploded view. Pipe and Fittings. Medium-Pressure Stainless Steel Threaded Pipe Fittings, Union Straight Connectors, Female, Threaded Fitting Connection, Hex Body.

    Female

    Union fittings separate into three pieces so you can access your line without unthreading pipe connections.
    304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.
    316 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
    Stainless Steel
    316
    Stainless Steel
    Pipe
    Size
    Pressure
    Class
    Body
    Shape
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    Each
    NPT Female
    1/8
    		1000
    		Hex1,000 psi @ 72° F650 psi @ 350° F4464K960000004452K461000000
    1/4
    		1000
    		Hex1,000 psi @ 72° F650 psi @ 350° F4464K97000004452K46200000
    3/8
    		1000
    		Hex1,000 psi @ 72° F650 psi @ 350° F4464K98000004452K46300000
    1/2
    		1000
    		Hex1,000 psi @ 72° F650 psi @ 350° F4464K99000004452K46400000
    3/4
    		1000
    		Hex1,000 psi @ 72° F650 psi @ 350° F4464K111000004452K46500000
    1
    		1000
    		Hex1,000 psi @ 72° F650 psi @ 350° F4464K112000004452K46600000
    1 1/4
    		1000
    		Hex1,000 psi @ 72° F650 psi @ 350° F4464K1130000004452K467000000
    1 1/2
    		1000
    		Hex1,000 psi @ 72° F650 psi @ 350° F4464K1140000004452K468000000
    2
    		1000
    		Hex1,000 psi @ 72° F650 psi @ 350° F4464K1150000004452K469000000
    2 1/2
    		1000
    		Hex1,000 psi @ 72° F650 psi @ 350° F4464K1670000004452K637000000
     
    back to top