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.
  • €3,95 - €3,95
    €3,95
    €3,95 - €3,95
    €3,95

    Foster 40-4, 4 Series, Industrial Plug, 1/4" Male NPT, Steel

    In stock

    Series: 4 Part Number: 40-4 Interchange: Industrial Body: 3/8" Plug Thread: 1/4" Male NPT, MPT Material: Heavy-Duty Steel Rated Pressure:...

    View full details
    €3,95 - €3,95
    €3,95
    €3,95 - €3,95
    €3,95
  • €3,95 - €3,95
    €3,95
    €3,95 - €3,95
    €3,95

    Foster 41-4, 4 Series, Industrial Plug, 1/4" Female NPT, Steel

    In stock

    Series: 4 Part Number: 41-4 Interchange: Industrial Body: 3/8" Plug Thread: 1/4" Female NPT, FPT Material: Heavy-Duty Steel Rated Pressur...

    View full details
    €3,95 - €3,95
    €3,95
    €3,95 - €3,95
    €3,95
  • €16,95 - €16,95
    €16,95
    €16,95 - €16,95
    €16,95

    Foster FM4004, 4 Series, Industrial Coupler, Automatic, 1/4" Female NPT, Brass

    In stock

    Series: 4 Part Number: FM4004 Interchange: Industrial Body: 3/8" Coupler, Automatic Thread: 1/4" Female NPT, FPT Material: Heavy-Duty Bras...

    View full details
    €16,95 - €16,95
    €16,95
    €16,95 - €16,95
    €16,95
  • €12,95 - €12,95
    €12,95
    €12,95 - €12,95
    €12,95

    Foster 4004, 4 Series, Industrial Coupler, Manual, 1/4" Female NPT, Brass, Steel

    In stock

    Series: 4 Part Number: 4004 Interchange: Industrial, I/M Body: 3/8" Manual Coupler Thread: 1/4" Female NPT, FPT Material: Heavy-Duty Brass...

    View full details
    €12,95 - €12,95
    €12,95
    €12,95 - €12,95
    €12,95
  • €16,95 - €16,95
    €16,95
    €16,95 - €16,95
    €16,95

    Foster FM4104, 4 Series, Industrial Coupler, Automatic, 1/4" Male NPT, Brass

    In stock

    Series: 4 Part Number: FM4104 Interchange: Industrial Body: 3/8" Coupler, Automatic Thread: 1/4" Male NPT, MPT Material: Heavy-Duty Brass,...

    View full details
    €16,95 - €16,95
    €16,95
    €16,95 - €16,95
    €16,95
  • €12,95 - €12,95
    €12,95
    €12,95 - €12,95
    €12,95

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

    In stock

    Series: 4 Part Number: 4104 Interchange: Industrial, I/M Body: 3/8" Manual Coupler Thread: 1/4" Male NPT, MPT Material: Heavy-Duty Brass, ...

    View full details
    €12,95 - €12,95
    €12,95
    €12,95 - €12,95
    €12,95
  • €4,95 - €4,95
    €4,95
    €4,95 - €4,95
    €4,95

    Foster 40-4B, 4 Series, Industrial Plug, 1/4" Male NPT, Brass

    In stock

    Series: 4 Part Number: 40-4B Interchange: Industrial Body: 3/8" Plug Thread: 1/4" Male NPT, MPT Material: Heavy-Duty Brass Rated Pressure...

    View full details
    €4,95 - €4,95
    €4,95
    €4,95 - €4,95
    €4,95