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  • Original price $ 430.00
    Original price $ 430.00 - Original price $ 430.00
    Original price $ 430.00
    Current price $ 344.00
    $ 344.00 - $ 344.00
    Current price $ 344.00

    Foster 4104, 3/8" Industrial Coupler x 1/4" Male NPT, 4 Series, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4104 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...

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    Original price $ 430.00
    Original price $ 430.00 - Original price $ 430.00
    Original price $ 430.00
    Current price $ 344.00
    $ 344.00 - $ 344.00
    Current price $ 344.00
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  • Original price $ 430.00
    Original price $ 430.00 - Original price $ 430.00
    Original price $ 430.00
    Current price $ 344.00
    $ 344.00 - $ 344.00
    Current price $ 344.00

    Foster 4104, 4 Series, Industrial Coupler, Manual, 1/4" Male NPT, Brass, Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4104 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...

    View full details
    Original price $ 430.00
    Original price $ 430.00 - Original price $ 430.00
    Original price $ 430.00
    Current price $ 344.00
    $ 344.00 - $ 344.00
    Current price $ 344.00
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  • Original price $ 497.00
    Original price $ 497.00 - Original price $ 497.00
    Original price $ 497.00
    Current price $ 398.00
    $ 398.00 - $ 398.00
    Current price $ 398.00

    Foster 4104H, 3/8" Industrial Coupler x 1/4" Male NPT, 4 Series, Heat/Viton, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4104H is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — ...

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    Original price $ 497.00
    Original price $ 497.00 - Original price $ 497.00
    Original price $ 497.00
    Current price $ 398.00
    $ 398.00 - $ 398.00
    Current price $ 398.00
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  • Original price $ 519.00
    Original price $ 519.00 - Original price $ 519.00
    Original price $ 519.00
    Current price $ 416.00
    $ 416.00 - $ 416.00
    Current price $ 416.00

    Foster 4104S, 3/8" Industrial Coupler x 1/4" Male NPT, 4 Series, Steam/EPDM, Brass body, Brass sleeve, SS valve

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4104S is a Brass body, Brass sleeve, SS valve 3/8" industrial coupler from...

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    Original price $ 519.00
    Original price $ 519.00 - Original price $ 519.00
    Original price $ 519.00
    Current price $ 416.00
    $ 416.00 - $ 416.00
    Current price $ 416.00
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  • Original price $ 505.00
    Original price $ 505.00 - Original price $ 505.00
    Original price $ 505.00
    Current price $ 405.00
    $ 405.00 - $ 405.00
    Current price $ 405.00

    Foster 4104W, 3/8" Industrial Coupler x 1/4" Male NPT, 4 Series, Water, Brass/SS

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4104W is a Brass/SS 3/8" industrial coupler from the Foster 4 Series — a h...

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    Original price $ 505.00
    Original price $ 505.00 - Original price $ 505.00
    Original price $ 505.00
    Current price $ 405.00
    $ 405.00 - $ 405.00
    Current price $ 405.00
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  • Original price $ 89.00
    Original price $ 89.00 - Original price $ 89.00
    Original price $ 89.00
    Current price $ 72.00
    $ 72.00 - $ 72.00
    Current price $ 72.00

    Foster 42-4, 3/8" Industrial Plug x 3/8" Male NPT, 4 Series, Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 42-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-flo...

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    Original price $ 89.00
    Original price $ 89.00 - Original price $ 89.00
    Original price $ 89.00
    Current price $ 72.00
    $ 72.00 - $ 72.00
    Current price $ 72.00
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  • Original price $ 161.00
    Original price $ 161.00 - Original price $ 161.00
    Original price $ 161.00
    Current price $ 129.00
    $ 129.00 - $ 129.00
    Current price $ 129.00

    Foster 42-4B, 3/8" Industrial Plug x 3/8" Male NPT, 4 Series, Brass

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 42-4B is a Brass 3/8" industrial plug from the Foster 4 Series — a high-fl...

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    Original price $ 161.00
    Original price $ 161.00 - Original price $ 161.00
    Original price $ 161.00
    Current price $ 129.00
    $ 129.00 - $ 129.00
    Current price $ 129.00
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  • Original price $ 161.00
    Original price $ 161.00 - Original price $ 161.00
    Original price $ 161.00
    Current price $ 129.00
    $ 129.00 - $ 129.00
    Current price $ 129.00

    Foster 42-4B, 4 Series, Industrial Plug, 3/8" Male NPT, Brass

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 42-4B is a Brass 3/8" industrial plug from the Foster 4 Series — a high-fl...

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    Original price $ 161.00
    Original price $ 161.00 - Original price $ 161.00
    Original price $ 161.00
    Current price $ 129.00
    $ 129.00 - $ 129.00
    Current price $ 129.00
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  • Original price $ 259.00
    Original price $ 259.00 - Original price $ 259.00
    Original price $ 259.00
    Current price $ 207.00
    $ 207.00 - $ 207.00
    Current price $ 207.00

    Foster 42-4S/S, 3/8" Industrial Plug x 3/8" Male NPT, 4 Series, 303 Stainless

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 42-4S/S is a 303 Stainless 3/8" industrial plug from the Foster 4 Series —...

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    Original price $ 259.00
    Original price $ 259.00 - Original price $ 259.00
    Original price $ 259.00
    Current price $ 207.00
    $ 207.00 - $ 207.00
    Current price $ 207.00
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  • Original price $ 432.00
    Original price $ 432.00 - Original price $ 432.00
    Original price $ 432.00
    Current price $ 346.00
    $ 346.00 - $ 346.00
    Current price $ 346.00

    Foster 4204, 3/8" Industrial Coupler x 3/8" Female NPT, 4 Series, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4204 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...

    View full details
    Original price $ 432.00
    Original price $ 432.00 - Original price $ 432.00
    Original price $ 432.00
    Current price $ 346.00
    $ 346.00 - $ 346.00
    Current price $ 346.00
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  • Original price $ 432.00
    Original price $ 432.00 - Original price $ 432.00
    Original price $ 432.00
    Current price $ 346.00
    $ 346.00 - $ 346.00
    Current price $ 346.00

    Foster 4204, 4 Series, Industrial Coupler, Manual, 3/8" Female NPT, Brass, Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4204 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...

    View full details
    Original price $ 432.00
    Original price $ 432.00 - Original price $ 432.00
    Original price $ 432.00
    Current price $ 346.00
    $ 346.00 - $ 346.00
    Current price $ 346.00
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  • Original price $ 519.00
    Original price $ 519.00 - Original price $ 519.00
    Original price $ 519.00
    Current price $ 416.00
    $ 416.00 - $ 416.00
    Current price $ 416.00

    Foster 4204H, 3/8" Industrial Coupler x 3/8" Female NPT, 4 Series, Heat/Viton, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4204H is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — ...

    View full details
    Original price $ 519.00
    Original price $ 519.00 - Original price $ 519.00
    Original price $ 519.00
    Current price $ 416.00
    $ 416.00 - $ 416.00
    Current price $ 416.00
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  • Original price $ 538.00
    Original price $ 538.00 - Original price $ 538.00
    Original price $ 538.00
    Current price $ 430.00
    $ 430.00 - $ 430.00
    Current price $ 430.00

    Foster 4204S, 3/8" Industrial Coupler x 3/8" Female NPT, 4 Series, Steam/EPDM, Brass body, Brass sleeve, SS valve

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4204S is a Brass body, Brass sleeve, SS valve 3/8" industrial coupler from...

    View full details
    Original price $ 538.00
    Original price $ 538.00 - Original price $ 538.00
    Original price $ 538.00
    Current price $ 430.00
    $ 430.00 - $ 430.00
    Current price $ 430.00
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  • Original price $ 872.00
    Original price $ 872.00 - Original price $ 872.00
    Original price $ 872.00
    Current price $ 697.00
    $ 697.00 - $ 697.00
    Current price $ 697.00

    Foster 4204S/S, 3/8" Industrial Coupler x 3/8" Female NPT, 4 Series, 303 Stainless

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4204S/S is a 303 Stainless 3/8" industrial coupler from the Foster 4 Serie...

    View full details
    Original price $ 872.00
    Original price $ 872.00 - Original price $ 872.00
    Original price $ 872.00
    Current price $ 697.00
    $ 697.00 - $ 697.00
    Current price $ 697.00
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  • Original price $ 526.00
    Original price $ 526.00 - Original price $ 526.00
    Original price $ 526.00
    Current price $ 421.00
    $ 421.00 - $ 421.00
    Current price $ 421.00

    Foster 4204W, 3/8" Industrial Coupler x 3/8" Female NPT, 4 Series, Water, Brass/SS

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4204W is a Brass/SS 3/8" industrial coupler from the Foster 4 Series — a h...

    View full details
    Original price $ 526.00
    Original price $ 526.00 - Original price $ 526.00
    Original price $ 526.00
    Current price $ 421.00
    $ 421.00 - $ 421.00
    Current price $ 421.00
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  • Original price $ 232.00
    Original price $ 232.00 - Original price $ 232.00
    Original price $ 232.00
    Current price $ 186.00
    $ 186.00 - $ 186.00
    Current price $ 186.00

    Foster 42S-4, 3/8" Industrial Plug x 3/8" Male NPT, 4 Series, Free Swivel, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 42S-4 is a Brass/Steel 3/8" industrial plug from the Foster 4 Series — a h...

    View full details
    Original price $ 232.00
    Original price $ 232.00 - Original price $ 232.00
    Original price $ 232.00
    Current price $ 186.00
    $ 186.00 - $ 186.00
    Current price $ 186.00
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  • Original price $ 120.00
    Original price $ 120.00 - Original price $ 120.00
    Original price $ 120.00
    Current price $ 97.00
    $ 97.00 - $ 97.00
    Current price $ 97.00

    Foster 43-4, 3/8" Industrial Plug x 3/8" Female NPT, 4 Series, Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 43-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-flo...

    View full details
    Original price $ 120.00
    Original price $ 120.00 - Original price $ 120.00
    Original price $ 120.00
    Current price $ 97.00
    $ 97.00 - $ 97.00
    Current price $ 97.00
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  • Original price $ 120.00
    Original price $ 120.00 - Original price $ 120.00
    Original price $ 120.00
    Current price $ 97.00
    $ 97.00 - $ 97.00
    Current price $ 97.00

    Foster 43-4, 4 Series, Industrial Plug, 3/8" Female NPT, Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 43-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-flo...

    View full details
    Original price $ 120.00
    Original price $ 120.00 - Original price $ 120.00
    Original price $ 120.00
    Current price $ 97.00
    $ 97.00 - $ 97.00
    Current price $ 97.00
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  • Original price $ 346.00
    Original price $ 346.00 - Original price $ 346.00
    Original price $ 346.00
    Current price $ 277.00
    $ 277.00 - $ 277.00
    Current price $ 277.00

    Foster 43-4S/S, 3/8" Industrial Plug x 3/8" Female NPT, 4 Series, 303 Stainless

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 43-4S/S is a 303 Stainless 3/8" industrial plug from the Foster 4 Series —...

    View full details
    Original price $ 346.00
    Original price $ 346.00 - Original price $ 346.00
    Original price $ 346.00
    Current price $ 277.00
    $ 277.00 - $ 277.00
    Current price $ 277.00
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  • Original price $ 449.00
    Original price $ 449.00 - Original price $ 449.00
    Original price $ 449.00
    Current price $ 359.00
    $ 359.00 - $ 359.00
    Current price $ 359.00

    Foster 4304, 3/8" Industrial Coupler x 3/8" Male NPT, 4 Series, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4304 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...

    View full details
    Original price $ 449.00
    Original price $ 449.00 - Original price $ 449.00
    Original price $ 449.00
    Current price $ 359.00
    $ 359.00 - $ 359.00
    Current price $ 359.00
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  • Original price $ 449.00
    Original price $ 449.00 - Original price $ 449.00
    Original price $ 449.00
    Current price $ 359.00
    $ 359.00 - $ 359.00
    Current price $ 359.00

    Foster 4304, 4 Series, Industrial Coupler, Manual, 3/8" Male NPT, Brass, Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4304 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...

    View full details
    Original price $ 449.00
    Original price $ 449.00 - Original price $ 449.00
    Original price $ 449.00
    Current price $ 359.00
    $ 359.00 - $ 359.00
    Current price $ 359.00
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  • Original price $ 538.00
    Original price $ 538.00 - Original price $ 538.00
    Original price $ 538.00
    Current price $ 430.00
    $ 430.00 - $ 430.00
    Current price $ 430.00

    Foster 4304S, 3/8" Industrial Coupler x 3/8" Male NPT, 4 Series, Steam/EPDM, Brass body, Brass sleeve, SS valve

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4304S is a Brass body, Brass sleeve, SS valve 3/8" industrial coupler from...

    View full details
    Original price $ 538.00
    Original price $ 538.00 - Original price $ 538.00
    Original price $ 538.00
    Current price $ 430.00
    $ 430.00 - $ 430.00
    Current price $ 430.00
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  • Original price $ 881.00
    Original price $ 881.00 - Original price $ 881.00
    Original price $ 881.00
    Current price $ 704.00
    $ 704.00 - $ 704.00
    Current price $ 704.00

    Foster 4304S/S, 3/8" Industrial Coupler x 3/8" Male NPT, 4 Series, 303 Stainless

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4304S/S is a 303 Stainless 3/8" industrial coupler from the Foster 4 Serie...

    View full details
    Original price $ 881.00
    Original price $ 881.00 - Original price $ 881.00
    Original price $ 881.00
    Current price $ 704.00
    $ 704.00 - $ 704.00
    Current price $ 704.00
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  • Original price $ 526.00
    Original price $ 526.00 - Original price $ 526.00
    Original price $ 526.00
    Current price $ 421.00
    $ 421.00 - $ 421.00
    Current price $ 421.00

    Foster 4304W, 3/8" Industrial Coupler x 3/8" Male NPT, 4 Series, Water, Brass/SS

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4304W is a Brass/SS 3/8" industrial coupler from the Foster 4 Series — a h...

    View full details
    Original price $ 526.00
    Original price $ 526.00 - Original price $ 526.00
    Original price $ 526.00
    Current price $ 421.00
    $ 421.00 - $ 421.00
    Current price $ 421.00
    Save 20% Save %