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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 %
$ 89.79
$ 89.79 - $ 89.79
$ 89.79
$ 71.79
$ 71.79 - $ 71.79
$ 71.79

Foster H6SLV, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, Less Valve, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H6SLV is a steel 3/4" coupler in the FHK ...

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$ 89.79
$ 89.79 - $ 89.79
$ 89.79
$ 71.79
$ 71.79 - $ 71.79
$ 71.79
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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 %
$ 91.69
$ 91.69 - $ 91.69
$ 91.69
$ 73.39
$ 73.39 - $ 73.39
$ 73.39

Foster H6S12, 3/4" ISO-B Hydraulic Coupler x 1-1/16"-12 SAE, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H6S12 is a steel 3/4" coupler in the FHK ...

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$ 91.69
$ 91.69 - $ 91.69
$ 91.69
$ 73.39
$ 73.39 - $ 73.39
$ 73.39
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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 %
$ 96.69
$ 96.69 - $ 96.69
$ 96.69
$ 77.39
$ 77.39 - $ 77.39
$ 77.39

Foster H6S-103, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, EPDM Seal, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H6S-103 is a steel 3/4" coupler in the FH...

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$ 96.69
$ 96.69 - $ 96.69
$ 96.69
$ 77.39
$ 77.39 - $ 77.39
$ 77.39
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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 %
$ 98.59
$ 98.59 - $ 98.59
$ 98.59
$ 78.89
$ 78.89 - $ 78.89
$ 78.89

Foster H6S-102, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, Neoprene Seal, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H6S-102 is a steel 3/4" coupler in the FH...

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$ 98.59
$ 98.59 - $ 98.59
$ 98.59
$ 78.89
$ 78.89 - $ 78.89
$ 78.89
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 99.39
$ 99.39 - $ 99.39
$ 99.39
$ 79.59
$ 79.59 - $ 79.59
$ 79.59

Foster H6S-101, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, Viton Seal, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H6S-101 is a steel 3/4" coupler in the FH...

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$ 99.39
$ 99.39 - $ 99.39
$ 99.39
$ 79.59
$ 79.59 - $ 79.59
$ 79.59
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 262.79
$ 262.79 - $ 262.79
$ 262.79
$ 210.19
$ 210.19 - $ 210.19
$ 210.19

Foster H6S/SLV, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, Less Valve, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H6S/SLV is a 303 stainless 3/4" coupler i...

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$ 262.79
$ 262.79 - $ 262.79
$ 262.79
$ 210.19
$ 210.19 - $ 210.19
$ 210.19
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 270.69
$ 270.69 - $ 270.69
$ 270.69
$ 216.59
$ 216.59 - $ 216.59
$ 216.59

Foster H6S/S-103, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, EPDM Seal, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H6S/S-103 is a 303 stainless 3/4" coupler...

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$ 270.69
$ 270.69 - $ 270.69
$ 270.69
$ 216.59
$ 216.59 - $ 216.59
$ 216.59
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 273.49
$ 273.49 - $ 273.49
$ 273.49
$ 218.79
$ 218.79 - $ 218.79
$ 218.79

Foster H6S/S-101, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, Viton Seal, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H6S/S-101 is a 303 stainless 3/4" coupler...

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$ 273.49
$ 273.49 - $ 273.49
$ 273.49
$ 218.79
$ 218.79 - $ 218.79
$ 218.79
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 257.79
$ 257.79 - $ 257.79
$ 257.79
$ 206.19
$ 206.19 - $ 206.19
$ 206.19

Foster H6S/S, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H6S/S is a 303 stainless 3/4" coupler in ...

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$ 257.79
$ 257.79 - $ 257.79
$ 257.79
$ 206.19
$ 206.19 - $ 206.19
$ 206.19
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 88.09
$ 88.09 - $ 88.09
$ 88.09
$ 70.49
$ 70.49 - $ 70.49
$ 70.49

Foster H6S, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H6S is a steel 3/4" coupler in the FHK Se...

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$ 88.09
$ 88.09 - $ 88.09
$ 88.09
$ 70.49
$ 70.49 - $ 70.49
$ 70.49
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 128.69
$ 128.69 - $ 128.69
$ 128.69
$ 102.99
$ 102.99 - $ 102.99
$ 102.99

Foster H6B-104, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, Silicone Seal, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H6B-104 is a brass 3/4" coupler in the FH...

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$ 128.69
$ 128.69 - $ 128.69
$ 128.69
$ 102.99
$ 102.99 - $ 102.99
$ 102.99
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 122.79
$ 122.79 - $ 122.79
$ 122.79
$ 98.29
$ 98.29 - $ 98.29
$ 98.29

Foster H6B-103, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, EPDM Seal, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H6B-103 is a brass 3/4" coupler in the FH...

View full details
$ 122.79
$ 122.79 - $ 122.79
$ 122.79
$ 98.29
$ 98.29 - $ 98.29
$ 98.29
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 %
$ 130.79
$ 130.79 - $ 130.79
$ 130.79
$ 104.69
$ 104.69 - $ 104.69
$ 104.69

Foster H6B-101, 3/4" ISO-B Hydraulic Coupler x 3/4" 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 H6B-101 is a brass 3/4" coupler in the FH...

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$ 130.79
$ 130.79 - $ 130.79
$ 130.79
$ 104.69
$ 104.69 - $ 104.69
$ 104.69
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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 %
$ 112.39
$ 112.39 - $ 112.39
$ 112.39
$ 89.89
$ 89.89 - $ 89.89
$ 89.89

Foster H6B, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H6B is a brass 3/4" coupler in the FHK Se...

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$ 112.39
$ 112.39 - $ 112.39
$ 112.39
$ 89.89
$ 89.89 - $ 89.89
$ 89.89
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 55.99
$ 55.99 - $ 55.99
$ 55.99
$ 44.79
$ 44.79 - $ 44.79
$ 44.79

Foster H4S-103, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, EPDM Seal, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H4S-103 is a steel 1/2" coupler in the FH...

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$ 55.99
$ 55.99 - $ 55.99
$ 55.99
$ 44.79
$ 44.79 - $ 44.79
$ 44.79
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 57.99
$ 57.99 - $ 57.99
$ 57.99
$ 46.39
$ 46.39 - $ 46.39
$ 46.39

Foster H4S-101, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, Viton Seal, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H4S-101 is a steel 1/2" coupler in the FH...

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$ 57.99
$ 57.99 - $ 57.99
$ 57.99
$ 46.39
$ 46.39 - $ 46.39
$ 46.39
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 61.79
$ 61.79 - $ 61.79
$ 61.79
$ 49.39
$ 49.39 - $ 49.39
$ 49.39

Foster H4S10, 1/2" ISO-B Hydraulic Coupler x 7/8"-14 SAE, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H4S10 is a steel 1/2" coupler in the FHK ...

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$ 61.79
$ 61.79 - $ 61.79
$ 61.79
$ 49.39
$ 49.39 - $ 49.39
$ 49.39
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 166.59
$ 166.59 - $ 166.59
$ 166.59
$ 133.29
$ 133.29 - $ 133.29
$ 133.29

Foster H4S/S-103, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, EPDM Seal, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H4S/S-103 is a 303 stainless 1/2" coupler...

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$ 166.59
$ 166.59 - $ 166.59
$ 166.59
$ 133.29
$ 133.29 - $ 133.29
$ 133.29
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 %
$ 164.29
$ 164.29 - $ 164.29
$ 164.29
$ 131.39
$ 131.39 - $ 131.39
$ 131.39

Foster H4S/S-101, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, Viton Seal, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H4S/S-101 is a 303 stainless 1/2" coupler...

View full details
$ 164.29
$ 164.29 - $ 164.29
$ 164.29
$ 131.39
$ 131.39 - $ 131.39
$ 131.39
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 158.49
$ 158.49 - $ 158.49
$ 158.49
$ 126.79
$ 126.79 - $ 126.79
$ 126.79

Foster H4S/S, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H4S/S is a 303 stainless 1/2" coupler in ...

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$ 158.49
$ 158.49 - $ 158.49
$ 158.49
$ 126.79
$ 126.79 - $ 126.79
$ 126.79
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 49.99
$ 49.99 - $ 49.99
$ 49.99
$ 39.99
$ 39.99 - $ 39.99
$ 39.99

Foster H4S, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H4S is a steel 1/2" coupler in the FHK Se...

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$ 49.99
$ 49.99 - $ 49.99
$ 49.99
$ 39.99
$ 39.99 - $ 39.99
$ 39.99
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 72.29
$ 72.29 - $ 72.29
$ 72.29
$ 57.89
$ 57.89 - $ 57.89
$ 57.89

Foster H4B-103, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, EPDM Seal, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H4B-103 is a brass 1/2" coupler in the FH...

View full details
$ 72.29
$ 72.29 - $ 72.29
$ 72.29
$ 57.89
$ 57.89 - $ 57.89
$ 57.89
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 %
$ 71.49
$ 71.49 - $ 71.49
$ 71.49
$ 57.19
$ 57.19 - $ 57.19
$ 57.19

Foster H4B-102, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, Neoprene Seal, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H4B-102 is a brass 1/2" coupler in the FH...

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$ 71.49
$ 71.49 - $ 71.49
$ 71.49
$ 57.19
$ 57.19 - $ 57.19
$ 57.19
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 76.19
$ 76.19 - $ 76.19
$ 76.19
$ 60.99
$ 60.99 - $ 60.99
$ 60.99

Foster H4B-101, 1/2" ISO-B Hydraulic Coupler x 1/2" 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 H4B-101 is a brass 1/2" coupler in the FH...

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$ 76.19
$ 76.19 - $ 76.19
$ 76.19
$ 60.99
$ 60.99 - $ 60.99
$ 60.99
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