Skip to content
🍁 Fall Savings Are Here – Get Up to 30% Off Select Fittings & Hose!
🍁 Fall Savings Are Here – Get Up to 30% Off Select Fittings & Hose!

ZSI Foster - 4 Series, 3/8" Body Industrial Interchange Pneumatic Couplers and Plugs

ZSI Foster's "4 Series" pneumatic fittings are the perfect solution for your industrial and manufacturing needs, including construction and repair shops. Made of durable brass or steel, these fittings are designed to connect flexible tubing such as polyurethane and nylon in various sizes. The quick-connect design allows for easy attachment and detachment from your pneumatic system, while their 3/8" industrial interchange compatibility means they can be used with fittings from other manufacturers. With their reliability and versatility, the "4 Series" fittings are a top choice for a wide range of pneumatic applications in construction and repair shops. Trust ZSI Foster to deliver high-quality fittings that get the job done right.
  • Original price $ 560.00
    Original price $ 560.00 - Original price $ 560.00
    Original price $ 560.00
    Current price $ 392.00
    $ 392.00 - $ 392.00
    Current price $ 392.00

    Foster FM1814, 4 Series, Industrial Coupler, Manual, 1/2" Hose Barb (Push-On), Brass

    In stock

    Series: 4 Part Number: FM1814 Interchange: Industrial, I/M Body: 3/8" Manual Coupler Thread: 1/2" Hose Barb (Push-On) Material: Heavy-Duty...

    View full details
    Original price $ 560.00
    Original price $ 560.00 - Original price $ 560.00
    Original price $ 560.00
    Current price $ 392.00
    $ 392.00 - $ 392.00
    Current price $ 392.00
    Save 30% Save %
  • Original price $ 436.00
    Original price $ 436.00 - Original price $ 436.00
    Original price $ 436.00
    Current price $ 305.00
    $ 305.00 - $ 305.00
    Current price $ 305.00

    Foster 1814, 4 Series, Industrial Coupler, Manual, 1/2" Hose Barb (Push-On), Brass, Steel

    In stock

    Series: 4 Part Number: 1814 Interchange: Industrial, I/M Body: 3/8" Manual Coupler Thread: 1/2" Hose Barb (Push-On) Material: Heavy-Duty B...

    View full details
    Original price $ 436.00
    Original price $ 436.00 - Original price $ 436.00
    Original price $ 436.00
    Current price $ 305.00
    $ 305.00 - $ 305.00
    Current price $ 305.00
    Save 30% Save %
  • Original price $ 434.00
    Original price $ 434.00 - Original price $ 434.00
    Original price $ 434.00
    Current price $ 304.00
    $ 304.00 - $ 304.00
    Current price $ 304.00

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

    In stock

    Series: 4 Part Number: 4904 Interchange: Industrial, I/M Body: 3/8" Manual Coupler Thread: 1/2" Hose Barb Material: Heavy-Duty Brass, Stee...

    View full details
    Original price $ 434.00
    Original price $ 434.00 - Original price $ 434.00
    Original price $ 434.00
    Current price $ 304.00
    $ 304.00 - $ 304.00
    Current price $ 304.00
    Save 30% Save %
  • Original price $ 190.00
    Original price $ 190.00 - Original price $ 190.00
    Original price $ 190.00
    Current price $ 133.00
    $ 133.00 - $ 133.00
    Current price $ 133.00

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

    In stock

    Series: 4 Part Number: 81-4 Interchange: Industrial Body: 3/8" Plug Thread: 3/8" Push-On Hose Barb Material: Heavy-Duty Steel Rated Pres...

    View full details
    Original price $ 190.00
    Original price $ 190.00 - Original price $ 190.00
    Original price $ 190.00
    Current price $ 133.00
    $ 133.00 - $ 133.00
    Current price $ 133.00
    Save 30% Save %
  • Original price $ 122.00
    Original price $ 122.00 - Original price $ 122.00
    Original price $ 122.00
    Current price $ 86.00
    $ 86.00 - $ 86.00
    Current price $ 86.00

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

    In stock

    Series: 4 Part Number: 49-4 Interchange: Industrial Body: 3/8" Plug Thread: 1/2" Hose Barb Material: Heavy-Duty Steel Rated Pressure: 300...

    View full details
    Original price $ 122.00
    Original price $ 122.00 - Original price $ 122.00
    Original price $ 122.00
    Current price $ 86.00
    $ 86.00 - $ 86.00
    Current price $ 86.00
    Save 30% Save %
  • Original price $ 518.00
    Original price $ 518.00 - Original price $ 518.00
    Original price $ 518.00
    Current price $ 363.00
    $ 363.00 - $ 363.00
    Current price $ 363.00

    Foster FM4904, 4 Series, Industrial Coupler, Automatic, 1/2" Hose Barb, Brass

    In stock

    Series: 4 Part Number: FM4904 Interchange: Industrial Body: 3/8" Coupler, Automatic Thread: 1/2" Hose Barb Material: Heavy-Duty Brass, Ste...

    View full details
    Original price $ 518.00
    Original price $ 518.00 - Original price $ 518.00
    Original price $ 518.00
    Current price $ 363.00
    $ 363.00 - $ 363.00
    Current price $ 363.00
    Save 30% Save %