Skip to content

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.

Filters

Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 28.09
$ 28.09 - $ 28.09
$ 28.09
$ 22.49
$ 22.49 - $ 22.49
$ 22.49

Foster H1B-101, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Viton Seal, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H1B-101 is a brass 1/8" coupler in the FH...

View full details
$ 28.09
$ 28.09 - $ 28.09
$ 28.09
$ 22.49
$ 22.49 - $ 22.49
$ 22.49
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 %
$ 21.09
$ 21.09 - $ 21.09
$ 21.09
$ 16.89
$ 16.89 - $ 16.89
$ 16.89

Foster H1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H1B is a brass 1/8" coupler in the FHK Se...

View full details
$ 21.09
$ 21.09 - $ 21.09
$ 21.09
$ 16.89
$ 16.89 - $ 16.89
$ 16.89
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 %
$ 402.39
$ 402.39 - $ 402.39
$ 402.39
$ 321.89
$ 321.89 - $ 321.89
$ 321.89

Foster BLH8S/S, 1" ISO-B Hydraulic Coupler x 1" Female NPT, ISO-B Series, Ball Lock, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH8S/S is a 303 stainless 1" coupler in ...

View full details
$ 402.39
$ 402.39 - $ 402.39
$ 402.39
$ 321.89
$ 321.89 - $ 321.89
$ 321.89
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 %
$ 137.19
$ 137.19 - $ 137.19
$ 137.19
$ 109.79
$ 109.79 - $ 109.79
$ 109.79

Foster BLH8S16, 1" ISO-B Hydraulic Coupler x 15/16"-12 SAE, ISO-B Series, Ball Lock, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH8S16 is a steel 1" coupler in the FHK ...

View full details
$ 137.19
$ 137.19 - $ 137.19
$ 137.19
$ 109.79
$ 109.79 - $ 109.79
$ 109.79
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 %
$ 122.09
$ 122.09 - $ 122.09
$ 122.09
$ 97.69
$ 97.69 - $ 97.69
$ 97.69

Foster BLH8S, 1" ISO-B Hydraulic Coupler x 1" Female NPT, ISO-B Series, Ball Lock, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH8S is a steel 1" coupler in the FHK Se...

View full details
$ 122.09
$ 122.09 - $ 122.09
$ 122.09
$ 97.69
$ 97.69 - $ 97.69
$ 97.69
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 %
$ 188.69
$ 188.69 - $ 188.69
$ 188.69
$ 150.99
$ 150.99 - $ 150.99
$ 150.99

Foster BLH8B, 1" ISO-B Hydraulic Coupler x 1" Female NPT, ISO-B Series, Ball Lock, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH8B is a brass 1" coupler in the FHK Se...

View full details
$ 188.69
$ 188.69 - $ 188.69
$ 188.69
$ 150.99
$ 150.99 - $ 150.99
$ 150.99
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 %
$ 101.19
$ 101.19 - $ 101.19
$ 101.19
$ 80.99
$ 80.99 - $ 80.99
$ 80.99

Foster BLH6S12, 3/4" ISO-B Hydraulic Coupler x 1-1/16"-12 SAE, ISO-B Series, Ball Lock, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH6S12 is a steel 3/4" coupler in the FH...

View full details
$ 101.19
$ 101.19 - $ 101.19
$ 101.19
$ 80.99
$ 80.99 - $ 80.99
$ 80.99
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 %
$ 273.19
$ 273.19 - $ 273.19
$ 273.19
$ 218.49
$ 218.49 - $ 218.49
$ 218.49

Foster BLH6S/S, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, Ball Lock, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH6S/S is a 303 stainless 3/4" coupler i...

View full details
$ 273.19
$ 273.19 - $ 273.19
$ 273.19
$ 218.49
$ 218.49 - $ 218.49
$ 218.49
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 %
$ 99.99
$ 99.99 - $ 99.99
$ 99.99
$ 79.99
$ 79.99 - $ 79.99
$ 79.99

Foster BLH6S, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, Ball Lock, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH6S is a steel 3/4" coupler in the FHK ...

View full details
$ 99.99
$ 99.99 - $ 99.99
$ 99.99
$ 79.99
$ 79.99 - $ 79.99
$ 79.99
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 %
$ 129.99
$ 129.99 - $ 129.99
$ 129.99
$ 103.99
$ 103.99 - $ 103.99
$ 103.99

Foster BLH6B, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, Ball Lock, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH6B is a brass 3/4" coupler in the FHK ...

View full details
$ 129.99
$ 129.99 - $ 129.99
$ 129.99
$ 103.99
$ 103.99 - $ 103.99
$ 103.99
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 %
$ 70.89
$ 70.89 - $ 70.89
$ 70.89
$ 56.79
$ 56.79 - $ 56.79
$ 56.79

Foster BLH4S10, 1/2" ISO-B Hydraulic Coupler x 7/8"-14 SAE, ISO-B Series, Ball Lock, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH4S10 is a steel 1/2" coupler in the FH...

View full details
$ 70.89
$ 70.89 - $ 70.89
$ 70.89
$ 56.79
$ 56.79 - $ 56.79
$ 56.79
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 %
$ 169.19
$ 169.19 - $ 169.19
$ 169.19
$ 135.39
$ 135.39 - $ 135.39
$ 135.39

Foster BLH4S/S, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, Ball Lock, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH4S/S is a 303 stainless 1/2" coupler i...

View full details
$ 169.19
$ 169.19 - $ 169.19
$ 169.19
$ 135.39
$ 135.39 - $ 135.39
$ 135.39
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 %
$ 58.99
$ 58.99 - $ 58.99
$ 58.99
$ 47.19
$ 47.19 - $ 47.19
$ 47.19

Foster BLH4S, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, Ball Lock, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH4S is a steel 1/2" coupler in the FHK ...

View full details
$ 58.99
$ 58.99 - $ 58.99
$ 58.99
$ 47.19
$ 47.19 - $ 47.19
$ 47.19
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 %
$ 75.79
$ 75.79 - $ 75.79
$ 75.79
$ 60.59
$ 60.59 - $ 60.59
$ 60.59

Foster BLH4B, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, Ball Lock, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH4B is a brass 1/2" coupler in the FHK ...

View full details
$ 75.79
$ 75.79 - $ 75.79
$ 75.79
$ 60.59
$ 60.59 - $ 60.59
$ 60.59
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 %
$ 52.39
$ 52.39 - $ 52.39
$ 52.39
$ 41.89
$ 41.89 - $ 41.89
$ 41.89

Foster BLH3S8, 3/8" ISO-B Hydraulic Coupler x 3/4"-16 SAE, ISO-B Series, Ball Lock, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH3S8 is a steel 3/8" coupler in the FHK...

View full details
$ 52.39
$ 52.39 - $ 52.39
$ 52.39
$ 41.89
$ 41.89 - $ 41.89
$ 41.89
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 %
$ 100.59
$ 100.59 - $ 100.59
$ 100.59
$ 80.49
$ 80.49 - $ 80.49
$ 80.49

Foster BLH3S/S, 3/8" ISO-B Hydraulic Coupler x 3/8" Female NPT, ISO-B Series, Ball Lock, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH3S/S is a 303 stainless 3/8" coupler i...

View full details
$ 100.59
$ 100.59 - $ 100.59
$ 100.59
$ 80.49
$ 80.49 - $ 80.49
$ 80.49
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 %
$ 47.59
$ 47.59 - $ 47.59
$ 47.59
$ 38.09
$ 38.09 - $ 38.09
$ 38.09

Foster BLH3S, 3/8" ISO-B Hydraulic Coupler x 3/8" Female NPT, ISO-B Series, Ball Lock, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH3S is a steel 3/8" coupler in the FHK ...

View full details
$ 47.59
$ 47.59 - $ 47.59
$ 47.59
$ 38.09
$ 38.09 - $ 38.09
$ 38.09
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 %
$ 49.09
$ 49.09 - $ 49.09
$ 49.09
$ 39.29
$ 39.29 - $ 39.29
$ 39.29

Foster BLH3B, 3/8" ISO-B Hydraulic Coupler x 3/8" Female NPT, ISO-B Series, Ball Lock, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH3B is a brass 3/8" coupler in the FHK ...

View full details
$ 49.09
$ 49.09 - $ 49.09
$ 49.09
$ 39.29
$ 39.29 - $ 39.29
$ 39.29
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 %
$ 31.89
$ 31.89 - $ 31.89
$ 31.89
$ 25.59
$ 25.59 - $ 25.59
$ 25.59

Foster BLH2S, 1/4" ISO-B Hydraulic Coupler x 1/4" Female NPT, ISO-B Series, Ball Lock, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH2S is a steel 1/4" coupler in the FHK ...

View full details
$ 31.89
$ 31.89 - $ 31.89
$ 31.89
$ 25.59
$ 25.59 - $ 25.59
$ 25.59
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 %
$ 36.09
$ 36.09 - $ 36.09
$ 36.09
$ 28.89
$ 28.89 - $ 28.89
$ 28.89

Foster BLH2S6, 1/4" ISO-B Hydraulic Coupler x 9/16"-18 SAE, ISO-B Series, Ball Lock, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH2S6 is a steel 1/4" coupler in the FHK...

View full details
$ 36.09
$ 36.09 - $ 36.09
$ 36.09
$ 28.89
$ 28.89 - $ 28.89
$ 28.89
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 %
$ 76.99
$ 76.99 - $ 76.99
$ 76.99
$ 61.59
$ 61.59 - $ 61.59
$ 61.59

Foster BLH2S/S, 1/4" ISO-B Hydraulic Coupler x 1/4" Female NPT, ISO-B Series, Ball Lock, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH2S/S is a 303 stainless 1/4" coupler i...

View full details
$ 76.99
$ 76.99 - $ 76.99
$ 76.99
$ 61.59
$ 61.59 - $ 61.59
$ 61.59
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 %
$ 36.89
$ 36.89 - $ 36.89
$ 36.89
$ 29.49
$ 29.49 - $ 29.49
$ 29.49

Foster BLH2B, 1/4" ISO-B Hydraulic Coupler x 1/4" Female NPT, ISO-B Series, Ball Lock, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH2B is a brass 1/4" coupler in the FHK ...

View full details
$ 36.89
$ 36.89 - $ 36.89
$ 36.89
$ 29.49
$ 29.49 - $ 29.49
$ 29.49
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 %
$ 33.79
$ 33.79 - $ 33.79
$ 33.79
$ 26.99
$ 26.99 - $ 26.99
$ 26.99

Foster BLH1S4, 1/8" ISO-B Hydraulic Coupler x 7/16"-20 SAE, ISO-B Series, Ball Lock, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH1S4 is a steel 1/8" coupler in the FHK...

View full details
$ 33.79
$ 33.79 - $ 33.79
$ 33.79
$ 26.99
$ 26.99 - $ 26.99
$ 26.99
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 %
$ 75.19
$ 75.19 - $ 75.19
$ 75.19
$ 60.09
$ 60.09 - $ 60.09
$ 60.09

Foster BLH1S/S, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH1S/S is a 303 stainless 1/8" coupler i...

View full details
$ 75.19
$ 75.19 - $ 75.19
$ 75.19
$ 60.09
$ 60.09 - $ 60.09
$ 60.09
Save 20% Save %

Request a Quote

Bulk and dealer pricing. Tell us what you need and we’ll reply within one business day.