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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 21% Save %
$ 3.79
$ 3.79 - $ 3.79
$ 3.79
$ 2.99
$ 2.99 - $ 2.99
$ 2.99

Foster 17-3, 1/4" Industrial Plug x 3/8" Hose ID, 3 Series, Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 17-3 is a Steel 1/4" industrial plug from the Foster 3 Series — the most p...

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$ 3.79
$ 3.79 - $ 3.79
$ 3.79
$ 2.99
$ 2.99 - $ 2.99
$ 2.99
Save 21% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 7.99
$ 7.99 - $ 7.99
$ 7.99
$ 6.39
$ 6.39 - $ 6.39
$ 6.39

Foster 16-3B, 1/4" Industrial Plug x 1/4" Hose ID, 3 Series, Brass

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

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$ 7.99
$ 7.99 - $ 7.99
$ 7.99
$ 6.39
$ 6.39 - $ 6.39
$ 6.39
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 21% Save %
$ 3.39
$ 3.39 - $ 3.39
$ 3.39
$ 2.69
$ 2.69 - $ 2.69
$ 2.69

Foster 16-3, 1/4" Industrial Plug x 1/4" Hose ID, 3 Series, 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 %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 11.59
$ 11.59 - $ 11.59
$ 11.59
$ 9.29
$ 9.29 - $ 9.29
$ 9.29

Foster 14-3GB, 1/4" Industrial Plug x 3/8" Male NPT, 3 Series, Ball Check, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 14-3GB is a Brass 1/4" industrial plug from the Foster 3 Series — the most...

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$ 11.59
$ 11.59 - $ 11.59
$ 11.59
$ 9.29
$ 9.29 - $ 9.29
$ 9.29
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 %
$ 9.39
$ 9.39 - $ 9.39
$ 9.39
$ 7.49
$ 7.49 - $ 7.49
$ 7.49

Foster 14-3B, 1/4" Industrial Plug x 3/8" Male NPT, 3 Series, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 14-3B is a Brass 1/4" industrial plug from the Foster 3 Series — the most ...

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$ 9.39
$ 9.39 - $ 9.39
$ 9.39
$ 7.49
$ 7.49 - $ 7.49
$ 7.49
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 21% Save %
$ 3.79
$ 3.79 - $ 3.79
$ 3.79
$ 2.99
$ 2.99 - $ 2.99
$ 2.99

Foster 14-3, 1/4" Industrial Plug x 3/8" Male NPT, 3 Series, Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 14-3 is a Steel 1/4" industrial plug from the Foster 3 Series — the most p...

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$ 3.79
$ 3.79 - $ 3.79
$ 3.79
$ 2.99
$ 2.99 - $ 2.99
$ 2.99
Save 21% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 11.39
$ 11.39 - $ 11.39
$ 11.39
$ 9.09
$ 9.09 - $ 9.09
$ 9.09

Foster 10-3GS/S, 1/4" Industrial Plug x 1/4" Male NPT, 3 Series, Ball Check, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 10-3GS/S is a 303 Stainless 1/4" industrial plug from the Foster 3 Series ...

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$ 11.39
$ 11.39 - $ 11.39
$ 11.39
$ 9.09
$ 9.09 - $ 9.09
$ 9.09
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 %
$ 8.49
$ 8.49 - $ 8.49
$ 8.49
$ 6.79
$ 6.79 - $ 6.79
$ 6.79

Foster 10-3GS, 1/4" Industrial Plug x 1/4" Male NPT, 3 Series, Ball Check, Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 10-3GS is a Steel 1/4" industrial plug from the Foster 3 Series — the most...

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$ 8.49
$ 8.49 - $ 8.49
$ 8.49
$ 6.79
$ 6.79 - $ 6.79
$ 6.79
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 %
$ 6.89
$ 6.89 - $ 6.89
$ 6.89
$ 5.59
$ 5.59 - $ 5.59
$ 5.59

Foster 10-3GB, 1/4" Industrial Plug x 1/4" Male NPT, 3 Series, Ball Check, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 10-3GB is a Brass 1/4" industrial plug from the Foster 3 Series — the most...

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$ 6.89
$ 6.89 - $ 6.89
$ 6.89
$ 5.59
$ 5.59 - $ 5.59
$ 5.59
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 %
$ 4.99
$ 4.99 - $ 4.99
$ 4.99
$ 3.99
$ 3.99 - $ 3.99
$ 3.99

Foster 10-3G, 1/4" Industrial Plug x 1/4" Male NPT, 3 Series, Ball Check, Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 10-3G is a Steel 1/4" industrial plug from the Foster 3 Series — the most ...

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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 %
$ 12.59
$ 12.59 - $ 12.59
$ 12.59
$ 10.09
$ 10.09 - $ 10.09
$ 10.09

Foster 10-3D, 1/4" Industrial Plug x 1/4" Male NPT, 3 Series, Dill Valve, Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 10-3D is a Steel 1/4" industrial plug from the Foster 3 Series — the most ...

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$ 12.59
$ 12.59 - $ 12.59
$ 12.59
$ 10.09
$ 10.09 - $ 10.09
$ 10.09
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 %
$ 9.49
$ 9.49 - $ 9.49
$ 9.49
$ 7.59
$ 7.59 - $ 7.59
$ 7.59

Foster 10-3S/S, 1/4" Industrial Plug x 1/4" Male NPT, 3 Series, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 10-3S/S is a 303 Stainless 1/4" industrial plug from the Foster 3 Series —...

View full details
$ 9.49
$ 9.49 - $ 9.49
$ 9.49
$ 7.59
$ 7.59 - $ 7.59
$ 7.59
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 18% Save %
$ 3.79
$ 3.79 - $ 3.79
$ 3.79
$ 3.09
$ 3.09 - $ 3.09
$ 3.09

Foster 10-3B, 1/4" Industrial Plug x 1/4" Male NPT, 3 Series, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 10-3B is a Brass 1/4" industrial plug from the Foster 3 Series — the most ...

View full details
$ 3.79
$ 3.79 - $ 3.79
$ 3.79
$ 3.09
$ 3.09 - $ 3.09
$ 3.09
Save 18% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 21% Save %
$ 2.39
$ 2.39 - $ 2.39
$ 2.39
$ 1.89
$ 1.89 - $ 1.89
$ 1.89

Foster 10-3, 1/4" Industrial Plug x 1/4" Male NPT, 3 Series, Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 10-3 is a Steel 1/4" industrial plug from the Foster 3 Series — the most p...

View full details
$ 2.39
$ 2.39 - $ 2.39
$ 2.39
$ 1.89
$ 1.89 - $ 1.89
$ 1.89
Save 21% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 12.49
$ 12.49 - $ 12.49
$ 12.49
$ 9.99
$ 9.99 - $ 9.99
$ 9.99

Foster 12-3S/S, 1/4" Industrial Plug x 1/8" Male NPT, 3 Series, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 12-3S/S is a 303 Stainless 1/4" industrial plug from the Foster 3 Series —...

View full details
$ 12.49
$ 12.49 - $ 12.49
$ 12.49
$ 9.99
$ 9.99 - $ 9.99
$ 9.99
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 %
$ 4.99
$ 4.99 - $ 4.99
$ 4.99
$ 3.99
$ 3.99 - $ 3.99
$ 3.99

Foster 12-3B, 1/4" Industrial Plug x 1/8" Male NPT, 3 Series, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 12-3B is a Brass 1/4" industrial plug from the Foster 3 Series — the most ...

View full details
$ 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 21% Save %
$ 2.89
$ 2.89 - $ 2.89
$ 2.89
$ 2.29
$ 2.29 - $ 2.29
$ 2.29

Foster 12-3, 1/4" Industrial Plug x 1/8" Male NPT, 3 Series, Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 12-3 is a Steel 1/4" industrial plug from the Foster 3 Series — the most p...

View full details
$ 2.89
$ 2.89 - $ 2.89
$ 2.89
$ 2.29
$ 2.29 - $ 2.29
$ 2.29
Save 21% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 21% Save %
$ 5.79
$ 5.79 - $ 5.79
$ 5.79
$ 4.59
$ 4.59 - $ 4.59
$ 4.59

Foster 15-3, 1/4" Industrial Plug x 3/8" Female NPT, 3 Series, Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 15-3 is a Steel 1/4" industrial plug from the Foster 3 Series — the most p...

View full details
$ 5.79
$ 5.79 - $ 5.79
$ 5.79
$ 4.59
$ 4.59 - $ 4.59
$ 4.59
Save 21% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 11.39
$ 11.39 - $ 11.39
$ 11.39
$ 9.09
$ 9.09 - $ 9.09
$ 9.09

Foster 11-3S/S, 1/4" Industrial Plug x 1/4" Female NPT, 3 Series, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 11-3S/S is a 303 Stainless 1/4" industrial plug from the Foster 3 Series —...

View full details
$ 11.39
$ 11.39 - $ 11.39
$ 11.39
$ 9.09
$ 9.09 - $ 9.09
$ 9.09
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 21% Save %
$ 4.79
$ 4.79 - $ 4.79
$ 4.79
$ 3.79
$ 3.79 - $ 3.79
$ 3.79

Foster 11-3B, 1/4" Industrial Plug x 1/4" Female NPT, 3 Series, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 11-3B is a Brass 1/4" industrial plug from the Foster 3 Series — the most ...

View full details
$ 4.79
$ 4.79 - $ 4.79
$ 4.79
$ 3.79
$ 3.79 - $ 3.79
$ 3.79
Save 21% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 19% Save %
$ 2.69
$ 2.69 - $ 2.69
$ 2.69
$ 2.19
$ 2.19 - $ 2.19
$ 2.19

Foster 11-3, 1/4" Industrial Plug x 1/4" Female NPT, 3 Series, Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 11-3 is a Steel 1/4" industrial plug from the Foster 3 Series — the most p...

View full details
$ 2.69
$ 2.69 - $ 2.69
$ 2.69
$ 2.19
$ 2.19 - $ 2.19
$ 2.19
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 %
$ 34.09
$ 34.09 - $ 34.09
$ 34.09
$ 27.29
$ 27.29 - $ 27.29
$ 27.29

Foster 13-3S/S, 1/4" Industrial Plug x 1/8" Female NPT, 3 Series, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 13-3S/S is a 303 Stainless 1/4" industrial plug from the Foster 3 Series —...

View full details
$ 34.09
$ 34.09 - $ 34.09
$ 34.09
$ 27.29
$ 27.29 - $ 27.29
$ 27.29
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 %
$ 5.59
$ 5.59 - $ 5.59
$ 5.59
$ 4.49
$ 4.49 - $ 4.49
$ 4.49

Foster 13-3B, 1/4" Industrial Plug x 1/8" Female NPT, 3 Series, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 13-3B is a Brass 1/4" industrial plug from the Foster 3 Series — the most ...

View full details
$ 5.59
$ 5.59 - $ 5.59
$ 5.59
$ 4.49
$ 4.49 - $ 4.49
$ 4.49
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 21% Save %
$ 3.29
$ 3.29 - $ 3.29
$ 3.29
$ 2.59
$ 2.59 - $ 2.59
$ 2.59

Foster 13-3, 1/4" Industrial Plug x 1/8" Female NPT, 3 Series, Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 13-3 is a Steel 1/4" industrial plug from the Foster 3 Series — the most p...

View full details
$ 3.29
$ 3.29 - $ 3.29
$ 3.29
$ 2.59
$ 2.59 - $ 2.59
$ 2.59
Save 21% Save %

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