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Hydraulic Quick Couplers

Hydraulic quick couplers join high-pressure fluid lines with a secure, leak-free connection. This collection covers ISO-B, ISO-A, flush face, and specialty hydraulic couplers and plugs in steel, brass, and stainless. Filter by series, body size, thread, and material to match your hydraulic system.

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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 %
$ 62.49
$ 62.49 - $ 62.49
$ 62.49
$ 49.99
$ 49.99 - $ 49.99
$ 49.99

Foster K8S-101, 1" ISO-B Hydraulic Plug x 1" 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 K8S-101 is a steel 1" plug in the FHK Ser...

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$ 62.49
$ 62.49 - $ 62.49
$ 62.49
$ 49.99
$ 49.99 - $ 49.99
$ 49.99
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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 %
$ 196.29
$ 196.29 - $ 196.29
$ 196.29
$ 157.09
$ 157.09 - $ 157.09
$ 157.09

Foster K8S/S-103, 1" ISO-B Hydraulic Plug x 1" 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 K8S/S-103 is a 303 stainless 1" plug in t...

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$ 196.29
$ 196.29 - $ 196.29
$ 196.29
$ 157.09
$ 157.09 - $ 157.09
$ 157.09
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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 %
$ 199.99
$ 199.99 - $ 199.99
$ 199.99
$ 159.99
$ 159.99 - $ 159.99
$ 159.99

Foster K8S/S-101, 1" ISO-B Hydraulic Plug x 1" 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 K8S/S-101 is a 303 stainless 1" plug in t...

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$ 199.99
$ 199.99 - $ 199.99
$ 199.99
$ 159.99
$ 159.99 - $ 159.99
$ 159.99
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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 %
$ 186.99
$ 186.99 - $ 186.99
$ 186.99
$ 149.59
$ 149.59 - $ 149.59
$ 149.59

Foster K8S/S, 1" ISO-B Hydraulic Plug x 1" 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 K8S/S is a 303 stainless 1" plug in the F...

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$ 186.99
$ 186.99 - $ 186.99
$ 186.99
$ 149.59
$ 149.59 - $ 149.59
$ 149.59
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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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$ 49.49
$ 49.49 - $ 49.49
$ 49.49
$ 39.59
$ 39.59 - $ 39.59
$ 39.59

Foster K8S, 1" ISO-B Hydraulic Plug x 1" Female NPT, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K8S is a steel 1" plug in the FHK Series,...

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$ 49.49
$ 49.49 - $ 49.49
$ 49.49
$ 39.59
$ 39.59 - $ 39.59
$ 39.59
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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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$ 80.69
$ 80.69 - $ 80.69
$ 80.69
$ 64.49
$ 64.49 - $ 64.49
$ 64.49

Foster K8B-103, 1" ISO-B Hydraulic Plug x 1" 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 K8B-103 is a brass 1" plug in the FHK Ser...

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$ 80.69
$ 80.69 - $ 80.69
$ 80.69
$ 64.49
$ 64.49 - $ 64.49
$ 64.49
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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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$ 81.89
$ 81.89 - $ 81.89
$ 81.89
$ 65.49
$ 65.49 - $ 65.49
$ 65.49

Foster K8B-101, 1" ISO-B Hydraulic Plug x 1" 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 K8B-101 is a brass 1" plug in the FHK Ser...

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$ 81.89
$ 81.89 - $ 81.89
$ 81.89
$ 65.49
$ 65.49 - $ 65.49
$ 65.49
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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$ 65.29
$ 65.29 - $ 65.29
$ 65.29
$ 52.19
$ 52.19 - $ 52.19
$ 52.19

Foster K8B, 1" ISO-B Hydraulic Plug x 1" Female NPT, ISO-B Series, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K8B is a brass 1" plug in the FHK Series,...

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$ 65.29
$ 65.29 - $ 65.29
$ 65.29
$ 52.19
$ 52.19 - $ 52.19
$ 52.19
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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$ 33.69
$ 33.69 - $ 33.69
$ 33.69
$ 26.99
$ 26.99 - $ 26.99
$ 26.99

Foster K6SLV, 3/4" ISO-B Hydraulic Plug 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 K6SLV is a steel 3/4" plug in the FHK Ser...

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$ 33.69
$ 33.69 - $ 33.69
$ 33.69
$ 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 %
$ 41.99
$ 41.99 - $ 41.99
$ 41.99
$ 33.59
$ 33.59 - $ 33.59
$ 33.59

Foster K6S12, 3/4" ISO-B Hydraulic Plug 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 K6S12 is a steel 3/4" plug in the FHK Ser...

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$ 41.99
$ 41.99 - $ 41.99
$ 41.99
$ 33.59
$ 33.59 - $ 33.59
$ 33.59
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 %
$ 40.39
$ 40.39 - $ 40.39
$ 40.39
$ 32.29
$ 32.29 - $ 32.29
$ 32.29

Foster K6S-103, 3/4" ISO-B Hydraulic Plug 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 K6S-103 is a steel 3/4" plug in the FHK S...

View full details
$ 40.39
$ 40.39 - $ 40.39
$ 40.39
$ 32.29
$ 32.29 - $ 32.29
$ 32.29
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 %
$ 40.29
$ 40.29 - $ 40.29
$ 40.29
$ 32.29
$ 32.29 - $ 32.29
$ 32.29

Foster K6S-102, 3/4" ISO-B Hydraulic Plug 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 K6S-102 is a steel 3/4" plug in the FHK S...

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$ 40.29
$ 40.29 - $ 40.29
$ 40.29
$ 32.29
$ 32.29 - $ 32.29
$ 32.29
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 %
$ 41.09
$ 41.09 - $ 41.09
$ 41.09
$ 32.89
$ 32.89 - $ 32.89
$ 32.89

Foster K6S-101, 3/4" ISO-B Hydraulic Plug 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 K6S-101 is a steel 3/4" plug in the FHK S...

View full details
$ 41.09
$ 41.09 - $ 41.09
$ 41.09
$ 32.89
$ 32.89 - $ 32.89
$ 32.89
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 %
$ 109.19
$ 109.19 - $ 109.19
$ 109.19
$ 87.29
$ 87.29 - $ 87.29
$ 87.29

Foster K6S/SLV, 3/4" ISO-B Hydraulic Plug 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 K6S/SLV is a 303 stainless 3/4" plug in t...

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$ 109.19
$ 109.19 - $ 109.19
$ 109.19
$ 87.29
$ 87.29 - $ 87.29
$ 87.29
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 %
$ 116.39
$ 116.39 - $ 116.39
$ 116.39
$ 93.19
$ 93.19 - $ 93.19
$ 93.19

Foster K6S/S-103, 3/4" ISO-B Hydraulic Plug 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 K6S/S-103 is a 303 stainless 3/4" plug in...

View full details
$ 116.39
$ 116.39 - $ 116.39
$ 116.39
$ 93.19
$ 93.19 - $ 93.19
$ 93.19
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 %
$ 114.89
$ 114.89 - $ 114.89
$ 114.89
$ 91.89
$ 91.89 - $ 91.89
$ 91.89

Foster K6S/S-101, 3/4" ISO-B Hydraulic Plug 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 K6S/S-101 is a 303 stainless 3/4" plug in...

View full details
$ 114.89
$ 114.89 - $ 114.89
$ 114.89
$ 91.89
$ 91.89 - $ 91.89
$ 91.89
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 %
$ 107.09
$ 107.09 - $ 107.09
$ 107.09
$ 85.69
$ 85.69 - $ 85.69
$ 85.69

Foster K6S/S, 3/4" ISO-B Hydraulic Plug 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 K6S/S is a 303 stainless 3/4" plug in the...

View full details
$ 107.09
$ 107.09 - $ 107.09
$ 107.09
$ 85.69
$ 85.69 - $ 85.69
$ 85.69
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 %
$ 37.39
$ 37.39 - $ 37.39
$ 37.39
$ 29.89
$ 29.89 - $ 29.89
$ 29.89

Foster K6S, 3/4" ISO-B Hydraulic Plug 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 K6S is a steel 3/4" plug in the FHK Serie...

View full details
$ 37.39
$ 37.39 - $ 37.39
$ 37.39
$ 29.89
$ 29.89 - $ 29.89
$ 29.89
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 %
$ 49.29
$ 49.29 - $ 49.29
$ 49.29
$ 39.39
$ 39.39 - $ 39.39
$ 39.39

Foster K6B-103, 3/4" ISO-B Hydraulic Plug 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 K6B-103 is a brass 3/4" plug in the FHK S...

View full details
$ 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 %
$ 52.09
$ 52.09 - $ 52.09
$ 52.09
$ 41.69
$ 41.69 - $ 41.69
$ 41.69

Foster K6B-101, 3/4" ISO-B Hydraulic Plug 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 K6B-101 is a brass 3/4" plug in the FHK S...

View full details
$ 52.09
$ 52.09 - $ 52.09
$ 52.09
$ 41.69
$ 41.69 - $ 41.69
$ 41.69
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 %
$ 40.49
$ 40.49 - $ 40.49
$ 40.49
$ 32.39
$ 32.39 - $ 32.39
$ 32.39

Foster K6B, 3/4" ISO-B Hydraulic Plug 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 K6B is a brass 3/4" plug in the FHK Serie...

View full details
$ 40.49
$ 40.49 - $ 40.49
$ 40.49
$ 32.39
$ 32.39 - $ 32.39
$ 32.39
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 %
$ 21.49
$ 21.49 - $ 21.49
$ 21.49
$ 17.19
$ 17.19 - $ 17.19
$ 17.19

Foster K4SLV, 1/2" ISO-B Hydraulic Plug x 1/2" 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 K4SLV is a steel 1/2" plug in the FHK Ser...

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$ 21.49
$ 21.49 - $ 21.49
$ 21.49
$ 17.19
$ 17.19 - $ 17.19
$ 17.19
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 %
$ 25.79
$ 25.79 - $ 25.79
$ 25.79
$ 20.59
$ 20.59 - $ 20.59
$ 20.59

Foster K4S-103, 1/2" ISO-B Hydraulic Plug 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 K4S-103 is a steel 1/2" plug in the FHK S...

View full details
$ 25.79
$ 25.79 - $ 25.79
$ 25.79
$ 20.59
$ 20.59 - $ 20.59
$ 20.59
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 %
$ 26.79
$ 26.79 - $ 26.79
$ 26.79
$ 21.49
$ 21.49 - $ 21.49
$ 21.49

Foster K4S-101, 1/2" ISO-B Hydraulic Plug 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 K4S-101 is a steel 1/2" plug in the FHK S...

View full details
$ 26.79
$ 26.79 - $ 26.79
$ 26.79
$ 21.49
$ 21.49 - $ 21.49
$ 21.49
Save 20% Save %

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