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  • Original price $ 6.99
    Original price $ 6.99 - Original price $ 6.99
    Original price $ 6.99
    Current price $ 5.59
    $ 5.59 - $ 5.59
    Current price $ 5.59

    Foster 49-4, 4 Series, Industrial Plug, 1/2" Hose Barb, Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 49-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-flo...

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    Original price $ 6.99
    Original price $ 6.99 - Original price $ 6.99
    Original price $ 6.99
    Current price $ 5.59
    $ 5.59 - $ 5.59
    Current price $ 5.59
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  • Original price $ 27.39
    Original price $ 27.39 - Original price $ 27.39
    Original price $ 27.39
    Current price $ 21.89
    $ 21.89 - $ 21.89
    Current price $ 21.89

    Foster 4904, 3/8" Industrial Coupler x 1/2" Hose ID, 4 Series, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4904 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...

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    Original price $ 27.39
    Original price $ 27.39 - Original price $ 27.39
    Original price $ 27.39
    Current price $ 21.89
    $ 21.89 - $ 21.89
    Current price $ 21.89
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  • Original price $ 27.39
    Original price $ 27.39 - Original price $ 27.39
    Original price $ 27.39
    Current price $ 21.89
    $ 21.89 - $ 21.89
    Current price $ 21.89

    Foster 4904, 4 Series, Industrial Coupler, Manual, 1/2" Hose Barb, Brass, Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4904 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...

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    Original price $ 27.39
    Original price $ 27.39 - Original price $ 27.39
    Original price $ 27.39
    Current price $ 21.89
    $ 21.89 - $ 21.89
    Current price $ 21.89
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  • Original price $ 33.39
    Original price $ 33.39 - Original price $ 33.39
    Original price $ 33.39
    Current price $ 26.79
    $ 26.79 - $ 26.79
    Current price $ 26.79

    Foster 4904S, 3/8" Industrial Coupler x 1/2" Hose ID, 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 4904S is a Brass body, Brass sleeve, SS valve 3/8" industrial coupler from...

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    Original price $ 33.39
    Original price $ 33.39 - Original price $ 33.39
    Original price $ 33.39
    Current price $ 26.79
    $ 26.79 - $ 26.79
    Current price $ 26.79
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  • Original price $ 7.39
    Original price $ 7.39 - Original price $ 7.39
    Original price $ 7.39
    Current price $ 5.99
    $ 5.99 - $ 5.99
    Current price $ 5.99

    Foster 51-4, 3/8" Industrial Plug x 1/4" Push-On Hose Stem, 4 Series, Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 51-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-flo...

    View full details
    Original price $ 7.39
    Original price $ 7.39 - Original price $ 7.39
    Original price $ 7.39
    Current price $ 5.99
    $ 5.99 - $ 5.99
    Current price $ 5.99
    Save 19% Save %
  • Original price $ 7.39
    Original price $ 7.39 - Original price $ 7.39
    Original price $ 7.39
    Current price $ 5.99
    $ 5.99 - $ 5.99
    Current price $ 5.99

    Foster 51-4, 4 Series, Industrial Plug, 1/4" Push-On Hose Barb, Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 51-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-flo...

    View full details
    Original price $ 7.39
    Original price $ 7.39 - Original price $ 7.39
    Original price $ 7.39
    Current price $ 5.99
    $ 5.99 - $ 5.99
    Current price $ 5.99
    Save 19% Save %
  • Original price $ 6.39
    Original price $ 6.39 - Original price $ 6.39
    Original price $ 6.39
    Current price $ 5.09
    $ 5.09 - $ 5.09
    Current price $ 5.09

    Foster 71-4, 3/8" Industrial Plug x 3/8" Push-On Hose Stem, 4 Series, Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 71-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-flo...

    View full details
    Original price $ 6.39
    Original price $ 6.39 - Original price $ 6.39
    Original price $ 6.39
    Current price $ 5.09
    $ 5.09 - $ 5.09
    Current price $ 5.09
    Save 20% Save %
  • Original price $ 6.39
    Original price $ 6.39 - Original price $ 6.39
    Original price $ 6.39
    Current price $ 5.09
    $ 5.09 - $ 5.09
    Current price $ 5.09

    Foster 71-4, 4 Series, Industrial Plug, 3/8" Push-On Hose Barb, Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 71-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-flo...

    View full details
    Original price $ 6.39
    Original price $ 6.39 - Original price $ 6.39
    Original price $ 6.39
    Current price $ 5.09
    $ 5.09 - $ 5.09
    Current price $ 5.09
    Save 20% Save %
  • Original price $ 26.89
    Original price $ 26.89 - Original price $ 26.89
    Original price $ 26.89
    Current price $ 21.49
    $ 21.49 - $ 21.49
    Current price $ 21.49

    Foster 71-4B, 3/8" Industrial Plug x 3/8" Push-On Hose Stem, 4 Series, Brass

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 71-4B is a Brass 3/8" industrial plug from the Foster 4 Series — a high-fl...

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    Original price $ 26.89
    Original price $ 26.89 - Original price $ 26.89
    Original price $ 26.89
    Current price $ 21.49
    $ 21.49 - $ 21.49
    Current price $ 21.49
    Save 20% Save %
  • Original price $ 26.89
    Original price $ 26.89 - Original price $ 26.89
    Original price $ 26.89
    Current price $ 21.49
    $ 21.49 - $ 21.49
    Current price $ 21.49

    Foster 71-4B, 4 Series, Industrial Plug, 3/8" Push-On Hose Barb, Brass

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 71-4B is a Brass 3/8" industrial plug from the Foster 4 Series — a high-fl...

    View full details
    Original price $ 26.89
    Original price $ 26.89 - Original price $ 26.89
    Original price $ 26.89
    Current price $ 21.49
    $ 21.49 - $ 21.49
    Current price $ 21.49
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  • Original price $ 10.79
    Original price $ 10.79 - Original price $ 10.79
    Original price $ 10.79
    Current price $ 8.69
    $ 8.69 - $ 8.69
    Current price $ 8.69

    Foster 81-4, 3/8" Industrial Plug x 1/2" Push-On Hose Stem, 4 Series, Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 81-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-flo...

    View full details
    Original price $ 10.79
    Original price $ 10.79 - Original price $ 10.79
    Original price $ 10.79
    Current price $ 8.69
    $ 8.69 - $ 8.69
    Current price $ 8.69
    Save 19% Save %
  • Original price $ 10.79
    Original price $ 10.79 - Original price $ 10.79
    Original price $ 10.79
    Current price $ 8.69
    $ 8.69 - $ 8.69
    Current price $ 8.69

    Foster 81-4, 4 Series, Industrial Plug, 1/2" Push-On Hose Barb, Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 81-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-flo...

    View full details
    Original price $ 10.79
    Original price $ 10.79 - Original price $ 10.79
    Original price $ 10.79
    Current price $ 8.69
    $ 8.69 - $ 8.69
    Current price $ 8.69
    Save 19% Save %
  • Original price $ 27.09
    Original price $ 27.09 - Original price $ 27.09
    Original price $ 27.09
    Current price $ 21.69
    $ 21.69 - $ 21.69
    Current price $ 21.69

    Foster BL1714, 3/8" Industrial Coupler x 3/8" Push-On Hose Stem, 4 Series, Ball Lock, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL1714 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...

    View full details
    Original price $ 27.09
    Original price $ 27.09 - Original price $ 27.09
    Original price $ 27.09
    Current price $ 21.69
    $ 21.69 - $ 21.69
    Current price $ 21.69
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  • Original price $ 28.99
    Original price $ 28.99 - Original price $ 28.99
    Original price $ 28.99
    Current price $ 23.19
    $ 23.19 - $ 23.19
    Current price $ 23.19

    Foster BL1814, 3/8" Industrial Coupler x 1/2" Push-On Hose Stem, 4 Series, Ball Lock, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL1814 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...

    View full details
    Original price $ 28.99
    Original price $ 28.99 - Original price $ 28.99
    Original price $ 28.99
    Current price $ 23.19
    $ 23.19 - $ 23.19
    Current price $ 23.19
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  • Original price $ 28.09
    Original price $ 28.09 - Original price $ 28.09
    Original price $ 28.09
    Current price $ 22.49
    $ 22.49 - $ 22.49
    Current price $ 22.49

    Foster BL4004, 3/8" Industrial Coupler x 1/4" Female NPT, 4 Series, Ball Lock, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4004 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...

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    Original price $ 28.09
    Original price $ 28.09 - Original price $ 28.09
    Original price $ 28.09
    Current price $ 22.49
    $ 22.49 - $ 22.49
    Current price $ 22.49
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  • Original price $ 28.09
    Original price $ 28.09 - Original price $ 28.09
    Original price $ 28.09
    Current price $ 22.49
    $ 22.49 - $ 22.49
    Current price $ 22.49

    Foster BL4104, 3/8" Industrial Coupler x 1/4" Male NPT, 4 Series, Ball Lock, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4104 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...

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    Original price $ 28.09
    Original price $ 28.09 - Original price $ 28.09
    Original price $ 28.09
    Current price $ 22.49
    $ 22.49 - $ 22.49
    Current price $ 22.49
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  • Original price $ 28.89
    Original price $ 28.89 - Original price $ 28.89
    Original price $ 28.89
    Current price $ 23.09
    $ 23.09 - $ 23.09
    Current price $ 23.09

    Foster BL4204, 3/8" Industrial Coupler x 3/8" Female NPT, 4 Series, Ball Lock, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4204 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...

    View full details
    Original price $ 28.89
    Original price $ 28.89 - Original price $ 28.89
    Original price $ 28.89
    Current price $ 23.09
    $ 23.09 - $ 23.09
    Current price $ 23.09
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  • Original price $ 51.89
    Original price $ 51.89 - Original price $ 51.89
    Original price $ 51.89
    Current price $ 41.49
    $ 41.49 - $ 41.49
    Current price $ 41.49

    Foster BL4204S/S, 3/8" Industrial Coupler x 3/8" Female NPT, 4 Series, Ball Lock, 303 Stainless

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4204S/S is a 303 Stainless 3/8" industrial coupler from the Foster 4 Ser...

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    Original price $ 51.89
    Original price $ 51.89 - Original price $ 51.89
    Original price $ 51.89
    Current price $ 41.49
    $ 41.49 - $ 41.49
    Current price $ 41.49
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  • Original price $ 29.29
    Original price $ 29.29 - Original price $ 29.29
    Original price $ 29.29
    Current price $ 23.49
    $ 23.49 - $ 23.49
    Current price $ 23.49

    Foster BL4304, 3/8" Industrial Coupler x 3/8" Male NPT, 4 Series, Ball Lock, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4304 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...

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    Original price $ 29.29
    Original price $ 29.29 - Original price $ 29.29
    Original price $ 29.29
    Current price $ 23.49
    $ 23.49 - $ 23.49
    Current price $ 23.49
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  • Original price $ 50.29
    Original price $ 50.29 - Original price $ 50.29
    Original price $ 50.29
    Current price $ 40.19
    $ 40.19 - $ 40.19
    Current price $ 40.19

    Foster BL4304S/S, 3/8" Industrial Coupler x 3/8" Male NPT, 4 Series, Ball Lock, 303 Stainless

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4304S/S is a 303 Stainless 3/8" industrial coupler from the Foster 4 Ser...

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    Original price $ 50.29
    Original price $ 50.29 - Original price $ 50.29
    Original price $ 50.29
    Current price $ 40.19
    $ 40.19 - $ 40.19
    Current price $ 40.19
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  • Original price $ 33.19
    Original price $ 33.19 - Original price $ 33.19
    Original price $ 33.19
    Current price $ 26.59
    $ 26.59 - $ 26.59
    Current price $ 26.59

    Foster BL4404, 3/8" Industrial Coupler x 1/2" Female NPT, 4 Series, Ball Lock, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4404 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...

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    Original price $ 33.19
    Original price $ 33.19 - Original price $ 33.19
    Original price $ 33.19
    Current price $ 26.59
    $ 26.59 - $ 26.59
    Current price $ 26.59
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  • Original price $ 33.19
    Original price $ 33.19 - Original price $ 33.19
    Original price $ 33.19
    Current price $ 26.59
    $ 26.59 - $ 26.59
    Current price $ 26.59

    Foster BL4504, 3/8" Industrial Coupler x 1/2" Male NPT, 4 Series, Ball Lock, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4504 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...

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    Original price $ 33.19
    Original price $ 33.19 - Original price $ 33.19
    Original price $ 33.19
    Current price $ 26.59
    $ 26.59 - $ 26.59
    Current price $ 26.59
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  • Original price $ 32.59
    Original price $ 32.59 - Original price $ 32.59
    Original price $ 32.59
    Current price $ 26.09
    $ 26.09 - $ 26.09
    Current price $ 26.09

    Foster BL4604, 3/8" Industrial Coupler x 1/4" Hose ID, 4 Series, Ball Lock, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4604 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...

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    Original price $ 32.59
    Original price $ 32.59 - Original price $ 32.59
    Original price $ 32.59
    Current price $ 26.09
    $ 26.09 - $ 26.09
    Current price $ 26.09
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  • Original price $ 32.99
    Original price $ 32.99 - Original price $ 32.99
    Original price $ 32.99
    Current price $ 26.39
    $ 26.39 - $ 26.39
    Current price $ 26.39

    Foster BL4704, 3/8" Industrial Coupler x 5/16" Hose ID, 4 Series, Ball Lock, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4704 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...

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    Original price $ 32.99
    Original price $ 32.99 - Original price $ 32.99
    Original price $ 32.99
    Current price $ 26.39
    $ 26.39 - $ 26.39
    Current price $ 26.39
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