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Foster

Foster quick couplers set the standard in pneumatic and hydraulic connections. Part of the ZSI-Foster line, Foster couplers and plugs cover the full range of industrial interchanges and body sizes in steel, brass, and stainless construction. Built for reliable, repeatable connections in air and fluid systems. Shop the full Foster range below.

  • Original price $ 495.00
    Original price $ 495.00 - Original price $ 495.00
    Original price $ 495.00
    Current price $ 347.00
    $ 347.00 - $ 347.00
    Current price $ 347.00

    Foster FM4404, 4 Series, Industrial Coupler, Automatic, 1/2" Female NPT, Brass

    In stock

    Series: 4 Part Number: FM4404 Interchange: Industrial Body: 3/8" Coupler, Automatic Thread: 1/2" Female NPT, FPT Material: Heavy-Duty Bras...

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    Original price $ 495.00
    Original price $ 495.00 - Original price $ 495.00
    Original price $ 495.00
    Current price $ 347.00
    $ 347.00 - $ 347.00
    Current price $ 347.00
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  • Original price $ 370.00
    Original price $ 370.00 - Original price $ 370.00
    Original price $ 370.00
    Current price $ 259.00
    $ 259.00 - $ 259.00
    Current price $ 259.00

    Foster 4204, 4 Series, Industrial Coupler, Manual, 3/8" Female NPT, Brass, Steel

    In stock

    Series: 4 Part Number: 4204 Interchange: Industrial, I/M Body: 3/8" Manual Coupler Thread: 3/8" Female NPT, FPT Material: Heavy-Duty Brass...

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    Original price $ 370.00
    Original price $ 370.00 - Original price $ 370.00
    Original price $ 370.00
    Current price $ 259.00
    $ 259.00 - $ 259.00
    Current price $ 259.00
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  • Original price $ 194.00
    Original price $ 194.00 - Original price $ 194.00
    Original price $ 194.00
    Current price $ 136.00
    $ 136.00 - $ 136.00
    Current price $ 136.00

    Foster SG3003, 3 Series, Industrial Coupler, Manual, Sleeve Guard, 1/4" Female NPT, Brass

    In stock

    Series: 3 Part Number: SG3003 Interchange: Industrial, I/M Body: 1/4" Coupler, Manual, Sleeve Guard Thread: 1/4" Female NPT, FPT Material:...

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    Original price $ 194.00
    Original price $ 194.00 - Original price $ 194.00
    Original price $ 194.00
    Current price $ 136.00
    $ 136.00 - $ 136.00
    Current price $ 136.00
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  • Original price $ 335.00
    Original price $ 335.00 - Original price $ 335.00
    Original price $ 335.00
    Current price $ 235.00
    $ 235.00 - $ 235.00
    Current price $ 235.00

    Foster FM3203, 3 Series, Industrial Coupler, Automatic, 3/8" Female NPT, Brass

    In stock

    Series: 3 Part Number: FM3203 Interchange: Industrial, I/M Body: 1/4" Coupler, Automatic Thread: 3/8" Female NPT, FPT Material: Heavy-Duty...

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    Original price $ 335.00
    Original price $ 335.00 - Original price $ 335.00
    Original price $ 335.00
    Current price $ 235.00
    $ 235.00 - $ 235.00
    Current price $ 235.00
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  • Original price $ 220.00
    Original price $ 220.00 - Original price $ 220.00
    Original price $ 220.00
    Current price $ 154.00
    $ 154.00 - $ 154.00
    Current price $ 154.00

    Foster 3603, 3 Series, Industrial Coupler, Manual, 1/4" Hose Barb, Brass, Steel

    In stock

    Series: 3 Part Number: 3603 Interchange: Industrial, I/M Body: 1/4" Coupler, Manual Thread: 1/4" Hose Barb Material: Heavy-Duty Brass, Ste...

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    Original price $ 220.00
    Original price $ 220.00 - Original price $ 220.00
    Original price $ 220.00
    Current price $ 154.00
    $ 154.00 - $ 154.00
    Current price $ 154.00
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  • Original price $ 65.00
    Original price $ 65.00 - Original price $ 65.00
    Original price $ 65.00
    Current price $ 46.00
    $ 46.00 - $ 46.00
    Current price $ 46.00

    Foster 17-3, 3 Series, Industrial Plug, 3/8" Hose Barb, Steel

    In stock

    Series: 3 Part Number: 17-3 Interchange: Industrial Body: 1/4" Plug Thread: 3/8" Hose Barb Material: Heavy-Duty Steel Rated Pressure: 30...

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    Original price $ 65.00
    Original price $ 65.00 - Original price $ 65.00
    Original price $ 65.00
    Current price $ 46.00
    $ 46.00 - $ 46.00
    Current price $ 46.00
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  • Original price $ 365.00
    Original price $ 365.00 - Original price $ 365.00
    Original price $ 365.00
    Current price $ 255.00
    $ 255.00 - $ 255.00
    Current price $ 255.00

    Foster 3003GS, 3 Series, Industrial Coupler, Automatic, 1/4" Female NPT, Brass, Steel

    In stock

    Series: 3 Part Number: 3003GS Interchange: Industrial, I/M Body: 1/4" Coupler, Automatic Thread: 1/4" Female NPT, FPT Material: Heavy-Duty...

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    Original price $ 365.00
    Original price $ 365.00 - Original price $ 365.00
    Original price $ 365.00
    Current price $ 255.00
    $ 255.00 - $ 255.00
    Current price $ 255.00
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  • Original price $ 242.00
    Original price $ 242.00 - Original price $ 242.00
    Original price $ 242.00
    Current price $ 169.00
    $ 169.00 - $ 169.00
    Current price $ 169.00

    Foster 3703, 3 Series, Industrial Coupler, Manual, 3/8" Hose Barb, Brass, Steel

    In stock

    Series: 3 Part Number: 3703 Interchange: Industrial, I/M Body: 1/4" Coupler, Manual Thread: 3/8" Hose Barb Material: Heavy-Duty Brass, Ste...

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    Original price $ 242.00
    Original price $ 242.00 - Original price $ 242.00
    Original price $ 242.00
    Current price $ 169.00
    $ 169.00 - $ 169.00
    Current price $ 169.00
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  • Original price $ 272.00
    Original price $ 272.00 - Original price $ 272.00
    Original price $ 272.00
    Current price $ 190.00
    $ 190.00 - $ 190.00
    Current price $ 190.00

    Foster TF3103, TF Series, True-Flate, Automotive, Coupler, Automatic, 1/4" Male NPT, Brass, Steel

    In stock

    Series: TF3 Part Number: TF3103 Interchange: True-Flate, Automotive Body: 1/4" Coupler, Automatic Thread: 1/4" Male NPT, MPT Material: Heav...

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    Original price $ 272.00
    Original price $ 272.00 - Original price $ 272.00
    Original price $ 272.00
    Current price $ 190.00
    $ 190.00 - $ 190.00
    Current price $ 190.00
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  • Original price $ 1,990.00
    Original price $ 1,990.00 - Original price $ 1,990.00
    Original price $ 1,990.00
    Current price $ 1,393.00
    $ 1,393.00 - $ 1,393.00
    Current price $ 1,393.00

    Foster SHD3003S/S, SHD Series, Schrader Coupler, Automatic 1/4" Female NPT, Stainless Steel

    In stock

    Series: SHD Part Number: SHD3003S/S Interchange: Schrader, Twist Lock Body: 1/4" Coupler, Automatic Thread: 1/4" Female NPT, FPT Rated Pres...

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    Original price $ 1,990.00
    Original price $ 1,990.00 - Original price $ 1,990.00
    Original price $ 1,990.00
    Current price $ 1,393.00
    $ 1,393.00 - $ 1,393.00
    Current price $ 1,393.00
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  • Original price $ 309.00
    Original price $ 309.00 - Original price $ 309.00
    Original price $ 309.00
    Current price $ 216.00
    $ 216.00 - $ 216.00
    Current price $ 216.00

    Foster 71-6, 6 Series, Industrial Plug, 3/4" Hose Barb, Steel

    In stock

    Series: 3 Part number: 71-6 Interchange: Industrial Body: 3/4" Plug Thread: 3/4" Hose Barb Material: Heavy-Duty Steel Rated Pressure: 30...

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    Original price $ 309.00
    Original price $ 309.00 - Original price $ 309.00
    Original price $ 309.00
    Current price $ 216.00
    $ 216.00 - $ 216.00
    Current price $ 216.00
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  • Original price $ 495.00
    Original price $ 495.00 - Original price $ 495.00
    Original price $ 495.00
    Current price $ 347.00
    $ 347.00 - $ 347.00
    Current price $ 347.00

    Foster FM4804, 4 Series, Industrial Coupler, Automatic, 3/8" Hose Barb, Brass

    In stock

    Series: 4 Part Number: FM4804 Interchange: Industrial Body: 3/8" Coupler, Automatic Thread: 3/8" Hose Barb Material: Heavy-Duty Brass, Ste...

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    Original price $ 495.00
    Original price $ 495.00 - Original price $ 495.00
    Original price $ 495.00
    Current price $ 347.00
    $ 347.00 - $ 347.00
    Current price $ 347.00
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  • Original price $ 576.00
    Original price $ 576.00 - Original price $ 576.00
    Original price $ 576.00
    Current price $ 403.00
    $ 403.00 - $ 403.00
    Current price $ 403.00

    Foster LN3003, LN Series, Lincoln Coupler, Automatic 1/4" Female NPT, Brass, Steel

    In stock

    Series: LN Part Number: LN3003 Interchange: Lincoln Body: 1/4" Coupler, Automatic Thread: 1/4" Female NPT, FPT Material: Heavy-Duty Brass, ...

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    Original price $ 576.00
    Original price $ 576.00 - Original price $ 576.00
    Original price $ 576.00
    Current price $ 403.00
    $ 403.00 - $ 403.00
    Current price $ 403.00
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  • Original price $ 159.00
    Original price $ 159.00 - Original price $ 159.00
    Original price $ 159.00
    Current price $ 111.00
    $ 111.00 - $ 111.00
    Current price $ 111.00

    Foster 45-4, 4 Series, Industrial Plug, 1/2" Female NPT, Steel

    In stock

    Series: 4 Part Number: 45-4 Interchange: Industrial Body: 3/8" Plug Thread: 1/2" Female NPT, FPT Material: Heavy-Duty Steel Rated Pressur...

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    Original price $ 159.00
    Original price $ 159.00 - Original price $ 159.00
    Original price $ 159.00
    Current price $ 111.00
    $ 111.00 - $ 111.00
    Current price $ 111.00
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  • Original price $ 118.00
    Original price $ 118.00 - Original price $ 118.00
    Original price $ 118.00
    Current price $ 83.00
    $ 83.00 - $ 83.00
    Current price $ 83.00

    Foster 44-4, 4 Series, Industrial Plug, 1/2" Male NPT, Steel

    In stock

    Series: 4 Part Number: 44-4 Interchange: Industrial Body: 3/8" Plug Thread: 1/2" Male NPT, MPT Material: Heavy-Duty Steel Rated Pressure:...

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    Original price $ 118.00
    Original price $ 118.00 - Original price $ 118.00
    Original price $ 118.00
    Current price $ 83.00
    $ 83.00 - $ 83.00
    Current price $ 83.00
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  • Original price $ 231.00
    Original price $ 231.00 - Original price $ 231.00
    Original price $ 231.00
    Current price $ 162.00
    $ 162.00 - $ 162.00
    Current price $ 162.00

    Foster 3303, 3 Series, Industrial Coupler, Manual, 3/8" Male NPT, Brass, Steel

    In stock

    Series: 3 Part Number: 3303 Interchange: Industrial, I/M Body: 1/4" Coupler, Manual Thread: 3/8" Male NPT, MPT Material: Heavy-Duty Brass,...

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    Original price $ 231.00
    Original price $ 231.00 - Original price $ 231.00
    Original price $ 231.00
    Current price $ 162.00
    $ 162.00 - $ 162.00
    Current price $ 162.00
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  • Original price $ 266.00
    Original price $ 266.00 - Original price $ 266.00
    Original price $ 266.00
    Current price $ 186.00
    $ 186.00 - $ 186.00
    Current price $ 186.00

    Foster 210-3703, Aro 210 Series, Coupler, Automatic, 3/8" Hose Barb, Brass, Steel

    In stock

    Series: 210 Part number: 210-3703 Interchange: Aro 210 Body: 1/4" Coupler, Automatic Thread: 3/8" Push-On Hose Barb Material: Heavy-Duty Bra...

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    Original price $ 266.00
    Original price $ 266.00 - Original price $ 266.00
    Original price $ 266.00
    Current price $ 186.00
    $ 186.00 - $ 186.00
    Current price $ 186.00
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  • Original price $ 105.00 - Original price $ 105.00
    Original price
    $ 105.00
    $ 105.00 - $ 105.00
    Current price $ 105.00

    Foster SHD-DP, SHD Series, Schrader, 1/4" Dust Plug

    In stock

    Series: SHD Part Number: SHD-DP Interchange: Schrader, Twist Lock Body: 1/4" Dust Plug Rated Pressure: 300 psi Quantity: 1pc Made-in-the-USA

    Original price $ 105.00 - Original price $ 105.00
    Original price
    $ 105.00
    $ 105.00 - $ 105.00
    Current price $ 105.00
  • Original price $ 502.00
    Original price $ 502.00 - Original price $ 502.00
    Original price $ 502.00
    Current price $ 352.00
    $ 352.00 - $ 352.00
    Current price $ 352.00

    Foster 310-4804, Aro 310 Series, Coupler, Automatic, 3/8" Hose Barb, Brass, Steel

    In stock

    Series: 310 Part number: 310-4804 Interchange: Aro 310 Body: 3/8" Coupler, Automatic Thread: 3/8" Hose Barb Material: Heavy-Duty Brass, Stee...

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    Original price $ 502.00
    Original price $ 502.00 - Original price $ 502.00
    Original price $ 502.00
    Current price $ 352.00
    $ 352.00 - $ 352.00
    Current price $ 352.00
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  • Original price $ 145.00
    Original price $ 145.00 - Original price $ 145.00
    Original price $ 145.00
    Current price $ 102.00
    $ 102.00 - $ 102.00
    Current price $ 102.00

    Foster K1B, FHK Series, ISO B, 1/8" Two Way Shut-off, Plug, Brass

    In stock

    Series: FHK Part Number: K1B Interchange: ISO B 7241-1 Plug Body: 1/8" Valved Thread: 1/8" Female NPT, FPT Material: Solid Brass Quantity: 1

    Original price $ 145.00
    Original price $ 145.00 - Original price $ 145.00
    Original price $ 145.00
    Current price $ 102.00
    $ 102.00 - $ 102.00
    Current price $ 102.00
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  • Original price $ 671.00
    Original price $ 671.00 - Original price $ 671.00
    Original price $ 671.00
    Current price $ 470.00
    $ 470.00 - $ 470.00
    Current price $ 470.00

    Foster FM5905, 5 Series, Industrial Coupler, Automatic, 3/4" Hose Barb, Brass

    In stock

    Series: 5 Part Number: FM5905 Interchange: Industrial Body: 1/2" Coupler, Automatic Thread: 3/4" Hose Barb Material: Heavy-Duty Brass Rat...

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    Original price $ 671.00
    Original price $ 671.00 - Original price $ 671.00
    Original price $ 671.00
    Current price $ 470.00
    $ 470.00 - $ 470.00
    Current price $ 470.00
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  • Original price $ 657.00
    Original price $ 657.00 - Original price $ 657.00
    Original price $ 657.00
    Current price $ 460.00
    $ 460.00 - $ 460.00
    Current price $ 460.00

    Foster FM5505, 5 Series, Industrial Coupler, Automatic, 3/4" Male NPT, Brass

    In stock

    Series: 5 Part Number: FM5505 Interchange: Industrial Body: 1/2" Coupler, Automatic Thread: 3/4" Male NPT, MPT Material: Heavy-Duty Brass ...

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    Original price $ 657.00
    Original price $ 657.00 - Original price $ 657.00
    Original price $ 657.00
    Current price $ 460.00
    $ 460.00 - $ 460.00
    Current price $ 460.00
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  • Original price $ 97.00
    Original price $ 97.00 - Original price $ 97.00
    Original price $ 97.00
    Current price $ 68.00
    $ 68.00 - $ 68.00
    Current price $ 68.00

    Foster 59-5, 5 Series, Industrial Plug, 3/8" Hose Barb, Steel

    In stock

    Series: 5 Part Number: 59-5 Interchange: Industrial Body: 1/2" Plug Thread: 3/8" Hose Barbs Material: Heavy-Duty Steel Rated Pressure: 30...

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    Original price $ 97.00
    Original price $ 97.00 - Original price $ 97.00
    Original price $ 97.00
    Current price $ 68.00
    $ 68.00 - $ 68.00
    Current price $ 68.00
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  • Original price $ 479.00
    Original price $ 479.00 - Original price $ 479.00
    Original price $ 479.00
    Current price $ 336.00
    $ 336.00 - $ 336.00
    Current price $ 336.00

    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,...

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    Original price $ 479.00
    Original price $ 479.00 - Original price $ 479.00
    Original price $ 479.00
    Current price $ 336.00
    $ 336.00 - $ 336.00
    Current price $ 336.00
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