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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.

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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 69.89
$ 69.89 - $ 69.89
$ 69.89
$ 55.89
$ 55.89 - $ 55.89
$ 55.89

Foster FM6706, 3/4" Industrial Coupler x 1" Male NPT, 6 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM6706 is a Brass 3/4" industrial coupler from the Foster 6 Seri...

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$ 69.89
$ 69.89 - $ 69.89
$ 69.89
$ 55.89
$ 55.89 - $ 55.89
$ 55.89
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 74.09
$ 74.09 - $ 74.09
$ 74.09
$ 59.29
$ 59.29 - $ 59.29
$ 59.29

Foster FM6406W, 3/4" Industrial Coupler x 3/4" Female NPT, 6 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM6406W is a Brass/SS 3/4" industrial coupler from the Foster 6 ...

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$ 74.09
$ 74.09 - $ 74.09
$ 74.09
$ 59.29
$ 59.29 - $ 59.29
$ 59.29
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 19% Save %
$ 5.69
$ 5.69 - $ 5.69
$ 5.69
$ 4.59
$ 4.59 - $ 4.59
$ 4.59

Foster 50-5, 1/2" Industrial Plug x 1/4" Male NPT, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 50-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 5.69
$ 5.69 - $ 5.69
$ 5.69
$ 4.59
$ 4.59 - $ 4.59
$ 4.59
Save 19% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 49.29
$ 49.29 - $ 49.29
$ 49.29
$ 39.39
$ 39.39 - $ 39.39
$ 39.39

Foster FMSD7-5H, 1/2" Industrial Coupler x Reusable Hose Fitting, 3/8" ID x 5/8" OD, 5 Series, Automatic, Heat/Viton, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FMSD7-5H is a Brass 1/2" industrial coupler from the Foster 5 Se...

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$ 49.29
$ 49.29 - $ 49.29
$ 49.29
$ 39.39
$ 39.39 - $ 39.39
$ 39.39
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 31.29
$ 31.29 - $ 31.29
$ 31.29
$ 25.09
$ 25.09 - $ 25.09
$ 25.09

Foster 5405, 1/2" Industrial Coupler x 3/4" Female NPT, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5405 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 31.29
$ 31.29 - $ 31.29
$ 31.29
$ 25.09
$ 25.09 - $ 25.09
$ 25.09
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 4.99
$ 4.99 - $ 4.99
$ 4.99
$ 3.99
$ 3.99 - $ 3.99
$ 3.99

Foster 42-4, 3/8" Industrial Plug x 3/8" Male NPT, 4 Series, Steel

Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 42-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-flo...

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$ 4.99
$ 4.99 - $ 4.99
$ 4.99
$ 3.99
$ 3.99 - $ 3.99
$ 3.99
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 36.49
$ 36.49 - $ 36.49
$ 36.49
$ 29.19
$ 29.19 - $ 29.19
$ 29.19

Foster SL4304, 3/8" Industrial Coupler x 3/8" Male NPT, 4 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 3/8" connections for air and fluid lines. The Foster SL4304 is a Brass 3/8" industrial coupler from the Foster 4 Series — a hig...

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$ 36.49
$ 36.49 - $ 36.49
$ 36.49
$ 29.19
$ 29.19 - $ 29.19
$ 29.19
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 19% Save %
$ 2.59
$ 2.59 - $ 2.59
$ 2.59
$ 2.09
$ 2.09 - $ 2.09
$ 2.09

Foster 22-2, 1/8" 2 Series Plug x 1/8" Male NPT, Steel

Dependable, leak-free connections for air and light fluid lines. The Foster 22-2 is a Steel 1/8" plug from the proven Foster 2 Series — a miniature...

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$ 2.59
$ 2.59 - $ 2.59
$ 2.59
$ 2.09
$ 2.09 - $ 2.09
$ 2.09
Save 19% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 10.59
$ 10.59 - $ 10.59
$ 10.59
$ 8.49
$ 8.49 - $ 8.49
$ 8.49

Foster 2022, 1/8" 2 Series Coupler x 1/8" Hose ID, Heavy-Duty Brass, Steel

Dependable, leak-free connections for air and light fluid lines. The Foster 2022 is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foster 2...

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$ 10.59
$ 10.59 - $ 10.59
$ 10.59
$ 8.49
$ 8.49 - $ 8.49
$ 8.49
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 10.19
$ 10.19 - $ 10.19
$ 10.19
$ 8.19
$ 8.19 - $ 8.19
$ 8.19

Foster 2302, 1/8" 2 Series Coupler x 1/8" Female NPT, Heavy-Duty Brass, Steel

Dependable, leak-free connections for air and light fluid lines. The Foster 2302 is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foster 2...

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$ 10.19
$ 10.19 - $ 10.19
$ 10.19
$ 8.19
$ 8.19 - $ 8.19
$ 8.19
Save 20% Save %
Save 20% Save %
$ 14.09
$ 14.09 - $ 14.09
$ 14.09
$ 11.29
$ 11.29 - $ 11.29
$ 11.29

Foster K1B-101, FHK Series, ISO B, 1/8" Two Way Shut-off, Plug, Brass

Series: FHK Part Number: K1B-101 Interchange: ISO B 7241-1 Plug Body: 1/8" Valved Thread: 1/8" Female NPT, FPT Material: Solid Brass, Viton Seal Qu...

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$ 14.09
$ 14.09 - $ 14.09
$ 14.09
$ 11.29
$ 11.29 - $ 11.29
$ 11.29
Save 20% Save %
Save 21% Save %
$ 3.39
$ 3.39 - $ 3.39
$ 3.39
$ 2.69
$ 2.69 - $ 2.69
$ 2.69

Foster 16-3, 3 Series, Industrial Plug, 1/4" Hose Barb, Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 16-3 is a Steel 1/4" industrial plug from the Foster 3 Series — the most p...

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$ 3.39
$ 3.39 - $ 3.39
$ 3.39
$ 2.69
$ 2.69 - $ 2.69
$ 2.69
Save 21% Save %
Save 20% Save %
$ 31.29
$ 31.29 - $ 31.29
$ 31.29
$ 24.99
$ 24.99 - $ 24.99
$ 24.99

Foster 310-4404, Aro 310 Series, Coupler, Automatic, 1/2" Female NPT, Brass, Steel

Series: 310 Part number: 310-4404 Interchange: Aro 310 Body: 3/8" Coupler, Automatic Thread: 1/2" Female NPT, FPT Material: Heavy-Duty Brass...

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$ 31.29
$ 31.29 - $ 31.29
$ 31.29
$ 24.99
$ 24.99 - $ 24.99
$ 24.99
Save 20% Save %
Save 20% Save %
$ 29.19
$ 29.19 - $ 29.19
$ 29.19
$ 23.29
$ 23.29 - $ 23.29
$ 23.29

Foster 310-4004, Aro 310 Series, Coupler, Automatic, 1/4" Female NPT, Brass, Steel

Series: 310 Part number: 310-3003 Interchange: Aro 310 Body: 3/8" Coupler, Automatic Thread: 1/4" Female NPT, FPT Material: Heavy-Duty Brass...

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$ 29.19
$ 29.19 - $ 29.19
$ 29.19
$ 23.29
$ 23.29 - $ 23.29
$ 23.29
Save 20% Save %
Save 20% Save %
$ 37.39
$ 37.39 - $ 37.39
$ 37.39
$ 29.89
$ 29.89 - $ 29.89
$ 29.89

Foster K6S, FHK Series, ISO B, 3/4" Two Way Shut-off, Plug, Steel

Series: FHK Part Number: K6S Interchange: ISO B 7241-1 Plug Body: 3/4" Valved Thread: 3/4" Female NPT, FPT Material: Solid Steel Quantity: 1

$ 37.39
$ 37.39 - $ 37.39
$ 37.39
$ 29.89
$ 29.89 - $ 29.89
$ 29.89
Save 20% Save %
Save 20% Save %
$ 69.19
$ 69.19 - $ 69.19
$ 69.19
$ 55.39
$ 55.39 - $ 55.39
$ 55.39

Foster H2S/S, FHK Series, ISO B, 1/4" Two Way Shut-off, Coupler, Stainless Steel

Series: FHK Part Number: H2S/S Interchange: ISO B 7241-1 Coupler Body: 1/4" Valved Thread: 1/4" Female NPT, FPT Material: Stainless Steel Quantity: 1

$ 69.19
$ 69.19 - $ 69.19
$ 69.19
$ 55.39
$ 55.39 - $ 55.39
$ 55.39
Save 20% Save %
Save 19% Save %
$ 7.79
$ 7.79 - $ 7.79
$ 7.79
$ 6.29
$ 6.29 - $ 6.29
$ 6.29

Foster 310-49, Aro 310 Series, Plug, Automatic, 1/2" Hose Barb, Steel

Series: 310 Part number: 310-49 Interchange: Aro 310 Body: 3/8" Plug, Automatic Thread: 1/2" Hose Barb Material: Heavy-Duty  Steel Rated P...

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$ 7.79
$ 7.79 - $ 7.79
$ 7.79
$ 6.29
$ 6.29 - $ 6.29
$ 6.29
Save 19% Save %
Save 20% Save %
$ 8.89
$ 8.89 - $ 8.89
$ 8.89
$ 7.09
$ 7.09 - $ 7.09
$ 7.09

Foster 310-48, Aro 310 Series, Plug, Automatic, 3/8" Hose Barb, Steel

Series: 310 Part number: 310-42 Interchange: Aro 310 Body: 3/8" Plug, Automatic Thread: 3/8" Hose Barb Material: Heavy-Duty  Steel Rated P...

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$ 8.89
$ 8.89 - $ 8.89
$ 8.89
$ 7.09
$ 7.09 - $ 7.09
$ 7.09
Save 20% Save %
Save 19% Save %
$ 6.79
$ 6.79 - $ 6.79
$ 6.79
$ 5.49
$ 5.49 - $ 5.49
$ 5.49

Foster 310-43, Aro 310 Series, Plug, Automatic, 3/8" Female NPT, Steel

Series: 310 Part number: 310-43 Interchange: Aro 310 Body: 3/8" Plug, Automatic Thread: 3/8" Female NPT, FPT Material: Heavy-Duty  Steel Ra...

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$ 6.79
$ 6.79 - $ 6.79
$ 6.79
$ 5.49
$ 5.49 - $ 5.49
$ 5.49
Save 19% Save %
Save 21% Save %
$ 5.19
$ 5.19 - $ 5.19
$ 5.19
$ 4.09
$ 4.09 - $ 4.09
$ 4.09

Foster 310-42, Aro 310 Series, Plug, Automatic, 3/8" Male NPT, Steel

Series: 310 Part number: 310-42 Interchange: Aro 310 Body: 3/8" Plug, Automatic Thread: 3/8" Male NPT, MPT Material: Heavy-Duty  Steel Rate...

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$ 5.19
$ 5.19 - $ 5.19
$ 5.19
$ 4.09
$ 4.09 - $ 4.09
$ 4.09
Save 21% Save %
Save 20% Save %
$ 25.59
$ 25.59 - $ 25.59
$ 25.59
$ 20.49
$ 20.49 - $ 20.49
$ 20.49

Foster K1S/S, FHK Series, ISO B, 1/8" Two Way Shut-off, Plug, Stainless Steel

Series: FHK Part Number: K1S/S Interchange: ISO B 7241-1 Plug Body: 1/8" Valved Thread: 1/8" Female NPT, FPT Material: Solid Brass Quantity: 1

$ 25.59
$ 25.59 - $ 25.59
$ 25.59
$ 20.49
$ 20.49 - $ 20.49
$ 20.49
Save 20% Save %
Save 20% Save %
$ 8.49
$ 8.49 - $ 8.49
$ 8.49
$ 6.79
$ 6.79 - $ 6.79
$ 6.79

Foster K1S, FHK Series, ISO B, 1/8" Two Way Shut-off, Plug, Steel

Series: FHK Part Number: K1S Interchange: ISO B 7241-1 Plug Body: 1/8" Valved Thread: 1/8" Female NPT, FPT Material: Solid Brass Quantity: 1

$ 8.49
$ 8.49 - $ 8.49
$ 8.49
$ 6.79
$ 6.79 - $ 6.79
$ 6.79
Save 20% Save %
Save 20% Save %
$ 24.59
$ 24.59 - $ 24.59
$ 24.59
$ 19.69
$ 19.69 - $ 19.69
$ 19.69

Foster H2S, FHK Series, ISO B, 1/4" Two Way Shut-off, Coupler, Steel

Series: FHK Part Number: H2S Interchange: ISO B 7241-1 Coupler Body: 1/4" Valved Thread: 1/4" Female NPT, FPT Material: Solid Steel Quantity: 1

$ 24.59
$ 24.59 - $ 24.59
$ 24.59
$ 19.69
$ 19.69 - $ 19.69
$ 19.69
Save 20% Save %
Save 20% Save %
$ 22.69
$ 22.69 - $ 22.69
$ 22.69
$ 18.19
$ 18.19 - $ 18.19
$ 18.19

Foster H1S, FHK Series, ISO B, 1/8" Two Way Shut-off, Coupler, Steel

Series: FHK Part Number: H1S Interchange: ISO B 7241-1 Coupler Body: 1/8" Valved Thread: 1/8" Female NPT, FPT Material: Solid Brass Quantity: 1

$ 22.69
$ 22.69 - $ 22.69
$ 22.69
$ 18.19
$ 18.19 - $ 18.19
$ 18.19
Save 20% Save %

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