Skip to content

Foster

  • Original price $ 24.09
    Original price $ 24.09 - Original price $ 24.09
    Original price $ 24.09
    Current price $ 19.29
    $ 19.29 - $ 19.29
    Current price $ 19.29

    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...

    View full details
    Original price $ 24.09
    Original price $ 24.09 - Original price $ 24.09
    Original price $ 24.09
    Current price $ 19.29
    $ 19.29 - $ 19.29
    Current price $ 19.29
    Save 20% Save %
  • Original price $ 24.09
    Original price $ 24.09 - Original price $ 24.09
    Original price $ 24.09
    Current price $ 19.29
    $ 19.29 - $ 19.29
    Current price $ 19.29

    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 $ 24.09
    Original price $ 24.09 - Original price $ 24.09
    Original price $ 24.09
    Current price $ 19.29
    $ 19.29 - $ 19.29
    Current price $ 19.29
    Save 20% Save %
  • Original price $ 27.89
    Original price $ 27.89 - Original price $ 27.89
    Original price $ 27.89
    Current price $ 22.29
    $ 22.29 - $ 22.29
    Current price $ 22.29

    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 — ...

    View full details
    Original price $ 27.89
    Original price $ 27.89 - Original price $ 27.89
    Original price $ 27.89
    Current price $ 22.29
    $ 22.29 - $ 22.29
    Current price $ 22.29
    Save 20% Save %
  • Original price $ 29.09
    Original price $ 29.09 - Original price $ 29.09
    Original price $ 29.09
    Current price $ 23.29
    $ 23.29 - $ 23.29
    Current price $ 23.29

    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...

    View full details
    Original price $ 29.09
    Original price $ 29.09 - Original price $ 29.09
    Original price $ 29.09
    Current price $ 23.29
    $ 23.29 - $ 23.29
    Current price $ 23.29
    Save 20% Save %
  • Original price $ 28.29
    Original price $ 28.29 - Original price $ 28.29
    Original price $ 28.29
    Current price $ 22.69
    $ 22.69 - $ 22.69
    Current price $ 22.69

    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...

    View full details
    Original price $ 28.29
    Original price $ 28.29 - Original price $ 28.29
    Original price $ 28.29
    Current price $ 22.69
    $ 22.69 - $ 22.69
    Current price $ 22.69
    Save 20% Save %
  • Original price $ 4.99
    Original price $ 4.99 - Original price $ 4.99
    Original price $ 4.99
    Current price $ 3.99
    $ 3.99 - $ 3.99
    Current price $ 3.99

    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...

    View full details
    Original price $ 4.99
    Original price $ 4.99 - Original price $ 4.99
    Original price $ 4.99
    Current price $ 3.99
    $ 3.99 - $ 3.99
    Current price $ 3.99
    Save 20% Save %
  • Original price $ 8.99
    Original price $ 8.99 - Original price $ 8.99
    Original price $ 8.99
    Current price $ 7.19
    $ 7.19 - $ 7.19
    Current price $ 7.19

    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...

    View full details
    Original price $ 8.99
    Original price $ 8.99 - Original price $ 8.99
    Original price $ 8.99
    Current price $ 7.19
    $ 7.19 - $ 7.19
    Current price $ 7.19
    Save 20% Save %
  • Original price $ 8.99
    Original price $ 8.99 - Original price $ 8.99
    Original price $ 8.99
    Current price $ 7.19
    $ 7.19 - $ 7.19
    Current price $ 7.19

    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...

    View full details
    Original price $ 8.99
    Original price $ 8.99 - Original price $ 8.99
    Original price $ 8.99
    Current price $ 7.19
    $ 7.19 - $ 7.19
    Current price $ 7.19
    Save 20% Save %
  • Original price $ 14.49
    Original price $ 14.49 - Original price $ 14.49
    Original price $ 14.49
    Current price $ 11.59
    $ 11.59 - $ 11.59
    Current price $ 11.59

    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 —...

    View full details
    Original price $ 14.49
    Original price $ 14.49 - Original price $ 14.49
    Original price $ 14.49
    Current price $ 11.59
    $ 11.59 - $ 11.59
    Current price $ 11.59
    Save 20% Save %
  • Original price $ 24.19
    Original price $ 24.19 - Original price $ 24.19
    Original price $ 24.19
    Current price $ 19.39
    $ 19.39 - $ 19.39
    Current price $ 19.39

    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 $ 24.19
    Original price $ 24.19 - Original price $ 24.19
    Original price $ 24.19
    Current price $ 19.39
    $ 19.39 - $ 19.39
    Current price $ 19.39
    Save 20% Save %
  • Original price $ 24.19
    Original price $ 24.19 - Original price $ 24.19
    Original price $ 24.19
    Current price $ 19.39
    $ 19.39 - $ 19.39
    Current price $ 19.39

    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 $ 24.19
    Original price $ 24.19 - Original price $ 24.19
    Original price $ 24.19
    Current price $ 19.39
    $ 19.39 - $ 19.39
    Current price $ 19.39
    Save 20% Save %
  • Original price $ 29.09
    Original price $ 29.09 - Original price $ 29.09
    Original price $ 29.09
    Current price $ 23.29
    $ 23.29 - $ 23.29
    Current price $ 23.29

    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 $ 29.09
    Original price $ 29.09 - Original price $ 29.09
    Original price $ 29.09
    Current price $ 23.29
    $ 23.29 - $ 23.29
    Current price $ 23.29
    Save 20% Save %
  • Original price $ 30.19
    Original price $ 30.19 - Original price $ 30.19
    Original price $ 30.19
    Current price $ 24.09
    $ 24.09 - $ 24.09
    Current price $ 24.09

    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 $ 30.19
    Original price $ 30.19 - Original price $ 30.19
    Original price $ 30.19
    Current price $ 24.09
    $ 24.09 - $ 24.09
    Current price $ 24.09
    Save 20% Save %
  • Original price $ 48.89
    Original price $ 48.89 - Original price $ 48.89
    Original price $ 48.89
    Current price $ 39.09
    $ 39.09 - $ 39.09
    Current price $ 39.09

    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 $ 48.89
    Original price $ 48.89 - Original price $ 48.89
    Original price $ 48.89
    Current price $ 39.09
    $ 39.09 - $ 39.09
    Current price $ 39.09
    Save 20% Save %
  • Original price $ 29.49
    Original price $ 29.49 - Original price $ 29.49
    Original price $ 29.49
    Current price $ 23.59
    $ 23.59 - $ 23.59
    Current price $ 23.59

    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 $ 29.49
    Original price $ 29.49 - Original price $ 29.49
    Original price $ 29.49
    Current price $ 23.59
    $ 23.59 - $ 23.59
    Current price $ 23.59
    Save 20% Save %
  • Original price $ 12.99
    Original price $ 12.99 - Original price $ 12.99
    Original price $ 12.99
    Current price $ 10.39
    $ 10.39 - $ 10.39
    Current price $ 10.39

    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 $ 12.99
    Original price $ 12.99 - Original price $ 12.99
    Original price $ 12.99
    Current price $ 10.39
    $ 10.39 - $ 10.39
    Current price $ 10.39
    Save 20% Save %
  • Original price $ 6.69
    Original price $ 6.69 - Original price $ 6.69
    Original price $ 6.69
    Current price $ 5.39
    $ 5.39 - $ 5.39
    Current price $ 5.39

    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 $ 6.69
    Original price $ 6.69 - Original price $ 6.69
    Original price $ 6.69
    Current price $ 5.39
    $ 5.39 - $ 5.39
    Current price $ 5.39
    Save 19% Save %
  • Original price $ 6.69
    Original price $ 6.69 - Original price $ 6.69
    Original price $ 6.69
    Current price $ 5.39
    $ 5.39 - $ 5.39
    Current price $ 5.39

    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 $ 6.69
    Original price $ 6.69 - Original price $ 6.69
    Original price $ 6.69
    Current price $ 5.39
    $ 5.39 - $ 5.39
    Current price $ 5.39
    Save 19% Save %
  • Original price $ 19.39
    Original price $ 19.39 - Original price $ 19.39
    Original price $ 19.39
    Current price $ 15.49
    $ 15.49 - $ 15.49
    Current price $ 15.49

    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 $ 19.39
    Original price $ 19.39 - Original price $ 19.39
    Original price $ 19.39
    Current price $ 15.49
    $ 15.49 - $ 15.49
    Current price $ 15.49
    Save 20% Save %
  • Original price $ 25.19
    Original price $ 25.19 - Original price $ 25.19
    Original price $ 25.19
    Current price $ 20.09
    $ 20.09 - $ 20.09
    Current price $ 20.09

    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 $ 25.19
    Original price $ 25.19 - Original price $ 25.19
    Original price $ 25.19
    Current price $ 20.09
    $ 20.09 - $ 20.09
    Current price $ 20.09
    Save 20% Save %
  • Original price $ 25.19
    Original price $ 25.19 - Original price $ 25.19
    Original price $ 25.19
    Current price $ 20.09
    $ 20.09 - $ 20.09
    Current price $ 20.09

    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 $ 25.19
    Original price $ 25.19 - Original price $ 25.19
    Original price $ 25.19
    Current price $ 20.09
    $ 20.09 - $ 20.09
    Current price $ 20.09
    Save 20% Save %
  • Original price $ 30.19
    Original price $ 30.19 - Original price $ 30.19
    Original price $ 30.19
    Current price $ 24.09
    $ 24.09 - $ 24.09
    Current price $ 24.09

    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 $ 30.19
    Original price $ 30.19 - Original price $ 30.19
    Original price $ 30.19
    Current price $ 24.09
    $ 24.09 - $ 24.09
    Current price $ 24.09
    Save 20% Save %
  • Original price $ 49.39
    Original price $ 49.39 - Original price $ 49.39
    Original price $ 49.39
    Current price $ 39.49
    $ 39.49 - $ 39.49
    Current price $ 39.49

    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 $ 49.39
    Original price $ 49.39 - Original price $ 49.39
    Original price $ 49.39
    Current price $ 39.49
    $ 39.49 - $ 39.49
    Current price $ 39.49
    Save 20% Save %
  • Original price $ 29.49
    Original price $ 29.49 - Original price $ 29.49
    Original price $ 29.49
    Current price $ 23.59
    $ 23.59 - $ 23.59
    Current price $ 23.59

    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 $ 29.49
    Original price $ 29.49 - Original price $ 29.49
    Original price $ 29.49
    Current price $ 23.59
    $ 23.59 - $ 23.59
    Current price $ 23.59
    Save 20% Save %