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.
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Original price $ 5.19Original price $ 5.19 - Original price $ 5.19Original price $ 5.19Current price $ 3.63$ 3.63 - $ 3.63Current price $ 3.63
Foster 40-4, 4 Series, Industrial Plug, 1/4" Male NPT, Steel
In stockSeries: 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 detailsOriginal price $ 5.19Original price $ 5.19 - Original price $ 5.19Original price $ 5.19Current price $ 3.63$ 3.63 - $ 3.63Current price $ 3.63Save 30% -
Original price $ 27.39Original price $ 27.39 - Original price $ 27.39Original price $ 27.39Current price $ 19.17$ 19.17 - $ 19.17Current price $ 19.17
Foster FM4204, 4 Series, Industrial Coupler, Automatic, 3/8" Female NPT, Brass
In stockSeries: 4 Part Number: FM4204 Interchange: Industrial Body: 3/8" Coupler, Automatic Thread: 3/8" Female NPT, FPT Material: Heavy-Duty Bras...
View full detailsOriginal price $ 27.39Original price $ 27.39 - Original price $ 27.39Original price $ 27.39Current price $ 19.17$ 19.17 - $ 19.17Current price $ 19.17Save 30% -
Original price $ 19.49Original price $ 19.49 - Original price $ 19.49Original price $ 19.49Current price $ 13.64$ 13.64 - $ 13.64Current price $ 13.64
Foster FM4303, 4 Series, Industrial Coupler, Automatic, 3/8" Male NPT, Brass
In stockSeries: 4 Part Number: FM4304 Interchange: Industrial Body: 3/8" Coupler, Automatic Thread: 3/8" Male NPT, MPT Material: Heavy-Duty Brass,...
View full detailsOriginal price $ 19.49Original price $ 19.49 - Original price $ 19.49Original price $ 19.49Current price $ 13.64$ 13.64 - $ 13.64Current price $ 13.64Save 30% -
Original price $ 4.89Original price $ 4.89 - Original price $ 4.89Original price $ 4.89Current price $ 3.42$ 3.42 - $ 3.42Current price $ 3.42
Foster 42-4, 4 Series, Industrial Plug, 3/8" Male NPT, Steel
In stockSeries: 4 Part Number: 42-4 Interchange: Industrial Body: 3/8" Plug Thread: 3/8" Male NPT, MPT Material: Heavy-Duty Steel Rated Pressure:...
View full detailsOriginal price $ 4.89Original price $ 4.89 - Original price $ 4.89Original price $ 4.89Current price $ 3.42$ 3.42 - $ 3.42Current price $ 3.42Save 30% -
Original price $ 5.29Original price $ 5.29 - Original price $ 5.29Original price $ 5.29Current price $ 3.70$ 3.70 - $ 3.70Current price $ 3.70
Foster 43-4, 4 Series, Industrial Plug, 3/8" Female NPT, Steel
In stockSeries: 4 Part Number: 43-4 Interchange: Industrial Body: 3/8" Plug Thread: 3/8" Female NPT, FPT Material: Heavy-Duty Brass Rated Pressur...
View full detailsOriginal price $ 5.29Original price $ 5.29 - Original price $ 5.29Original price $ 5.29Current price $ 3.70$ 3.70 - $ 3.70Current price $ 3.70Save 30% -
Original price $ 5.29Original price $ 5.29 - Original price $ 5.29Original price $ 5.29Current price $ 3.70$ 3.70 - $ 3.70Current price $ 3.70
Foster 41-4, 4 Series, Industrial Plug, 1/4" Female NPT, Steel
In stockSeries: 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 detailsOriginal price $ 5.29Original price $ 5.29 - Original price $ 5.29Original price $ 5.29Current price $ 3.70$ 3.70 - $ 3.70Current price $ 3.70Save 30% -
Original price $ 7.69Original price $ 7.69 - Original price $ 7.69Original price $ 7.69Current price $ 5.38$ 5.38 - $ 5.38Current price $ 5.38
Foster 42-4B, 4 Series, Industrial Plug, 3/8" Male NPT, Brass
In stockSeries: 4 Part Number: 42-4B Interchange: Industrial Body: 3/8" Plug Thread: 3/8" Male NPT, MPT Material: Heavy-Duty Brass Rated Pressure...
View full detailsOriginal price $ 7.69Original price $ 7.69 - Original price $ 7.69Original price $ 7.69Current price $ 5.38$ 5.38 - $ 5.38Current price $ 5.38Save 30% -
Original price $ 27.19Original price $ 27.19 - Original price $ 27.19Original price $ 27.19Current price $ 19.03$ 19.03 - $ 19.03Current price $ 19.03
Foster FM4004, 4 Series, Industrial Coupler, Automatic, 1/4" Female NPT, Brass
In stockSeries: 4 Part Number: FM4004 Interchange: Industrial Body: 3/8" Coupler, Automatic Thread: 1/4" Female NPT, FPT Material: Heavy-Duty Bras...
View full detailsOriginal price $ 27.19Original price $ 27.19 - Original price $ 27.19Original price $ 27.19Current price $ 19.03$ 19.03 - $ 19.03Current price $ 19.03Save 30% -
Original price $ 20.99Original price $ 20.99 - Original price $ 20.99Original price $ 20.99Current price $ 14.69$ 14.69 - $ 14.69Current price $ 14.69
Foster 4204, 4 Series, Industrial Coupler, Manual, 3/8" Female NPT, Brass, Steel
In stockSeries: 4 Part Number: 4204 Interchange: Industrial, I/M Body: 3/8" Manual Coupler Thread: 3/8" Female NPT, FPT Material: Heavy-Duty Brass...
View full detailsOriginal price $ 20.99Original price $ 20.99 - Original price $ 20.99Original price $ 20.99Current price $ 14.69$ 14.69 - $ 14.69Current price $ 14.69Save 30% -
Original price $ 20.39Original price $ 20.39 - Original price $ 20.39Original price $ 20.39Current price $ 14.27$ 14.27 - $ 14.27Current price $ 14.27
Foster 4004, 4 Series, Industrial Coupler, Manual, 1/4" Female NPT, Brass, Steel
In stockSeries: 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 detailsOriginal price $ 20.39Original price $ 20.39 - Original price $ 20.39Original price $ 20.39Current price $ 14.27$ 14.27 - $ 14.27Current price $ 14.27Save 30% -
Original price $ 28.09Original price $ 28.09 - Original price $ 28.09Original price $ 28.09Current price $ 19.66$ 19.66 - $ 19.66Current price $ 19.66
Foster FM4404, 4 Series, Industrial Coupler, Automatic, 1/2" Female NPT, Brass
In stockSeries: 4 Part Number: FM4404 Interchange: Industrial Body: 3/8" Coupler, Automatic Thread: 1/2" Female NPT, FPT Material: Heavy-Duty Bras...
View full detailsOriginal price $ 28.09Original price $ 28.09 - Original price $ 28.09Original price $ 28.09Current price $ 19.66$ 19.66 - $ 19.66Current price $ 19.66Save 30% -
Original price $ 8.99Original price $ 8.99 - Original price $ 8.99Original price $ 8.99Current price $ 6.29$ 6.29 - $ 6.29Current price $ 6.29
Foster 45-4, 4 Series, Industrial Plug, 1/2" Female NPT, Steel
In stockSeries: 4 Part Number: 45-4 Interchange: Industrial Body: 3/8" Plug Thread: 1/2" Female NPT, FPT Material: Heavy-Duty Steel Rated Pressur...
View full detailsOriginal price $ 8.99Original price $ 8.99 - Original price $ 8.99Original price $ 8.99Current price $ 6.29$ 6.29 - $ 6.29Current price $ 6.29Save 30% -
Original price $ 28.09Original price $ 28.09 - Original price $ 28.09Original price $ 28.09Current price $ 19.66$ 19.66 - $ 19.66Current price $ 19.66
Foster FM4804, 4 Series, Industrial Coupler, Automatic, 3/8" Hose Barb, Brass
In stockSeries: 4 Part Number: FM4804 Interchange: Industrial Body: 3/8" Coupler, Automatic Thread: 3/8" Hose Barb Material: Heavy-Duty Brass, Ste...
View full detailsOriginal price $ 28.09Original price $ 28.09 - Original price $ 28.09Original price $ 28.09Current price $ 19.66$ 19.66 - $ 19.66Current price $ 19.66Save 30% -
Original price $ 20.99Original price $ 20.99 - Original price $ 20.99Original price $ 20.99Current price $ 14.69$ 14.69 - $ 14.69Current price $ 14.69
Foster 4104, 4 Series, Industrial Coupler, Manual, 1/4" Male NPT, Brass, Steel
In stockSeries: 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 detailsOriginal price $ 20.99Original price $ 20.99 - Original price $ 20.99Original price $ 20.99Current price $ 14.69$ 14.69 - $ 14.69Current price $ 14.69Save 30% -
Original price $ 27.39Original price $ 27.39 - Original price $ 27.39Original price $ 27.39Current price $ 19.17$ 19.17 - $ 19.17Current price $ 19.17
Foster FM4304, 4 Series, Industrial Coupler, Automatic, 3/8" Male NPT, Brass
In stockSeries: 4 Part Number: FM4304 Interchange: Industrial Body: 3/8" Coupler, Automatic Thread: 3/8" Male NPT, MPT Material: Heavy-Duty Brass ...
View full detailsOriginal price $ 27.39Original price $ 27.39 - Original price $ 27.39Original price $ 27.39Current price $ 19.17$ 19.17 - $ 19.17Current price $ 19.17Save 30% -
Original price $ 7.89Original price $ 7.89 - Original price $ 7.89Original price $ 7.89Current price $ 5.52$ 5.52 - $ 5.52Current price $ 5.52
Foster 40-4B, 4 Series, Industrial Plug, 1/4" Male NPT, Brass
In stockSeries: 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 detailsOriginal price $ 7.89Original price $ 7.89 - Original price $ 7.89Original price $ 7.89Current price $ 5.52$ 5.52 - $ 5.52Current price $ 5.52Save 30% -
Original price $ 27.19Original price $ 27.19 - Original price $ 27.19Original price $ 27.19Current price $ 19.03$ 19.03 - $ 19.03Current price $ 19.03
Foster FM4104, 4 Series, Industrial Coupler, Automatic, 1/4" Male NPT, Brass
In stockSeries: 4 Part Number: FM4104 Interchange: Industrial Body: 3/8" Coupler, Automatic Thread: 1/4" Male NPT, MPT Material: Heavy-Duty Brass,...
View full detailsOriginal price $ 27.19Original price $ 27.19 - Original price $ 27.19Original price $ 27.19Current price $ 19.03$ 19.03 - $ 19.03Current price $ 19.03Save 30% -
Original price $ 29.79Original price $ 29.79 - Original price $ 29.79Original price $ 29.79Current price $ 20.85$ 20.85 - $ 20.85Current price $ 20.85
Foster FM1714, 4 Series, Industrial Coupler, Automatic, 3/8" Push-On Hose Barb, Brass
In stockSeries: 4 Part Number: FM1714 Interchange: Industrial Body: 3/8" Coupler, Automatic Thread: 3/8" Push-On Hose Barb Material: Heavy-Duty Br...
View full detailsOriginal price $ 29.79Original price $ 29.79 - Original price $ 29.79Original price $ 29.79Current price $ 20.85$ 20.85 - $ 20.85Current price $ 20.85Save 30% -
Original price $ 8.59Original price $ 8.59 - Original price $ 8.59Original price $ 8.59Current price $ 6.01$ 6.01 - $ 6.01Current price $ 6.01
Foster 48-4B, 4 Series, Industrial Plug, 3/8" Hose Barb, Brass
In stockSeries: 4 Part Number: 48-4B Interchange: Industrial Body: 3/8" Plug Thread: 3/8" Hose Barb Material: Heavy-Duty Brass Rated Pressure: 30...
View full detailsOriginal price $ 8.59Original price $ 8.59 - Original price $ 8.59Original price $ 8.59Current price $ 6.01$ 6.01 - $ 6.01Current price $ 6.01Save 30% -
Original price $ 6.69Original price $ 6.69 - Original price $ 6.69Original price $ 6.69Current price $ 4.68$ 4.68 - $ 4.68Current price $ 4.68
Foster 44-4, 4 Series, Industrial Plug, 1/2" Male NPT, Steel
In stockSeries: 4 Part Number: 44-4 Interchange: Industrial Body: 3/8" Plug Thread: 1/2" Male NPT, MPT Material: Heavy-Duty Steel Rated Pressure:...
View full detailsOriginal price $ 6.69Original price $ 6.69 - Original price $ 6.69Original price $ 6.69Current price $ 4.68$ 4.68 - $ 4.68Current price $ 4.68Save 30% -
Original price $ 27.69Original price $ 27.69 - Original price $ 27.69Original price $ 27.69Current price $ 19.38$ 19.38 - $ 19.38Current price $ 19.38
Foster FM4504, 4 Series, Industrial Coupler, Automatic, 1/2" Male NPT, Brass
In stockSeries: 4 Part Number: FM4504 Interchange: Industrial Body: 3/8" Coupler, Automatic Thread: 1/2" Male NPT, MPT Material: Heavy-Duty Brass,...
View full detailsOriginal price $ 27.69Original price $ 27.69 - Original price $ 27.69Original price $ 27.69Current price $ 19.38$ 19.38 - $ 19.38Current price $ 19.38Save 30% -
Original price $ 24.29Original price $ 24.29 - Original price $ 24.29Original price $ 24.29Current price $ 17.00$ 17.00 - $ 17.00Current price $ 17.00
Foster 4404, 4 Series, Industrial Coupler, Manual, 1/2" Female NPT, Brass, Steel
In stockSeries: 4 Part Number: 4404 Interchange: Industrial, I/M Body: 3/8" Manual Coupler Thread: 1/2" Female NPT, FPT Material: Heavy-Duty Brass...
View full detailsOriginal price $ 24.29Original price $ 24.29 - Original price $ 24.29Original price $ 24.29Current price $ 17.00$ 17.00 - $ 17.00Current price $ 17.00Save 30% -
Original price $ 8.49Original price $ 8.49 - Original price $ 8.49Original price $ 8.49Current price $ 5.94$ 5.94 - $ 5.94Current price $ 5.94
Foster 46-4, 4 Series, Industrial Plug, 1/4" Hose Barb, Steel
In stockSeries: 4 Part Number: 46-4 Interchange: Industrial Body: 3/8" Plug Thread: 1/4" Hose Barb Material: Heavy-Duty Steel Rated Pressure: 300...
View full detailsOriginal price $ 8.49Original price $ 8.49 - Original price $ 8.49Original price $ 8.49Current price $ 5.94$ 5.94 - $ 5.94Current price $ 5.94Save 30% -
Original price $ 30.69Original price $ 30.69 - Original price $ 30.69Original price $ 30.69Current price $ 21.48$ 21.48 - $ 21.48Current price $ 21.48
Foster FM1814, 4 Series, Industrial Coupler, Manual, 1/2" Hose Barb (Push-On), Brass
In stockSeries: 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 detailsOriginal price $ 30.69Original price $ 30.69 - Original price $ 30.69Original price $ 30.69Current price $ 21.48$ 21.48 - $ 21.48Current price $ 21.48Save 30%
