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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 %
$ 1,100.00
$ 1,100.00 - $ 1,100.00
$ 1,100.00
$ 879.00
$ 879.00 - $ 879.00
$ 879.00

Foster K8S16, 1" ISO-B Hydraulic Plug x 15/16"-12 SAE, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K8S16 is a steel 1" plug in the FHK Serie...

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$ 1,100.00
$ 1,100.00 - $ 1,100.00
$ 1,100.00
$ 879.00
$ 879.00 - $ 879.00
$ 879.00
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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 %
$ 1,088.00
$ 1,088.00 - $ 1,088.00
$ 1,088.00
$ 870.00
$ 870.00 - $ 870.00
$ 870.00

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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$ 1,088.00
$ 1,088.00 - $ 1,088.00
$ 1,088.00
$ 870.00
$ 870.00 - $ 870.00
$ 870.00
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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 %
$ 3,415.00
$ 3,415.00 - $ 3,415.00
$ 3,415.00
$ 2,733.00
$ 2,733.00 - $ 2,733.00
$ 2,733.00

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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$ 3,415.00
$ 3,415.00 - $ 3,415.00
$ 3,415.00
$ 2,733.00
$ 2,733.00 - $ 2,733.00
$ 2,733.00
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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 %
$ 3,480.00
$ 3,480.00 - $ 3,480.00
$ 3,480.00
$ 2,784.00
$ 2,784.00 - $ 2,784.00
$ 2,784.00

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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$ 3,480.00
$ 3,480.00 - $ 3,480.00
$ 3,480.00
$ 2,784.00
$ 2,784.00 - $ 2,784.00
$ 2,784.00
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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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$ 3,254.00
$ 3,254.00 - $ 3,254.00
$ 3,254.00
$ 2,603.00
$ 2,603.00 - $ 2,603.00
$ 2,603.00

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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$ 3,254.00
$ 3,254.00 - $ 3,254.00
$ 3,254.00
$ 2,603.00
$ 2,603.00 - $ 2,603.00
$ 2,603.00
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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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$ 861.00
$ 861.00 - $ 861.00
$ 861.00
$ 689.00
$ 689.00 - $ 689.00
$ 689.00

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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$ 861.00
$ 861.00 - $ 861.00
$ 861.00
$ 689.00
$ 689.00 - $ 689.00
$ 689.00
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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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$ 1,404.00
$ 1,404.00 - $ 1,404.00
$ 1,404.00
$ 1,122.00
$ 1,122.00 - $ 1,122.00
$ 1,122.00

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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$ 1,404.00
$ 1,404.00 - $ 1,404.00
$ 1,404.00
$ 1,122.00
$ 1,122.00 - $ 1,122.00
$ 1,122.00
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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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$ 1,425.00
$ 1,425.00 - $ 1,425.00
$ 1,425.00
$ 1,140.00
$ 1,140.00 - $ 1,140.00
$ 1,140.00

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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$ 1,425.00
$ 1,425.00 - $ 1,425.00
$ 1,425.00
$ 1,140.00
$ 1,140.00 - $ 1,140.00
$ 1,140.00
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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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$ 1,136.00
$ 1,136.00 - $ 1,136.00
$ 1,136.00
$ 908.00
$ 908.00 - $ 908.00
$ 908.00

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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$ 1,136.00
$ 1,136.00 - $ 1,136.00
$ 1,136.00
$ 908.00
$ 908.00 - $ 908.00
$ 908.00
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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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$ 587.00
$ 587.00 - $ 587.00
$ 587.00
$ 470.00
$ 470.00 - $ 470.00
$ 470.00

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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$ 587.00
$ 587.00 - $ 587.00
$ 587.00
$ 470.00
$ 470.00 - $ 470.00
$ 470.00
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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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$ 731.00
$ 731.00 - $ 731.00
$ 731.00
$ 585.00
$ 585.00 - $ 585.00
$ 585.00

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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$ 731.00
$ 731.00 - $ 731.00
$ 731.00
$ 585.00
$ 585.00 - $ 585.00
$ 585.00
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 %
$ 703.00
$ 703.00 - $ 703.00
$ 703.00
$ 562.00
$ 562.00 - $ 562.00
$ 562.00

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...

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$ 703.00
$ 703.00 - $ 703.00
$ 703.00
$ 562.00
$ 562.00 - $ 562.00
$ 562.00
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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$ 701.00
$ 701.00 - $ 701.00
$ 701.00
$ 562.00
$ 562.00 - $ 562.00
$ 562.00

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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$ 701.00
$ 701.00 - $ 701.00
$ 701.00
$ 562.00
$ 562.00 - $ 562.00
$ 562.00
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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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$ 715.00
$ 715.00 - $ 715.00
$ 715.00
$ 573.00
$ 573.00 - $ 573.00
$ 573.00

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...

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$ 715.00
$ 715.00 - $ 715.00
$ 715.00
$ 573.00
$ 573.00 - $ 573.00
$ 573.00
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 %
$ 1,900.00
$ 1,900.00 - $ 1,900.00
$ 1,900.00
$ 1,519.00
$ 1,519.00 - $ 1,519.00
$ 1,519.00

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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$ 1,900.00
$ 1,900.00 - $ 1,900.00
$ 1,900.00
$ 1,519.00
$ 1,519.00 - $ 1,519.00
$ 1,519.00
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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$ 2,025.00
$ 2,025.00 - $ 2,025.00
$ 2,025.00
$ 1,622.00
$ 1,622.00 - $ 1,622.00
$ 1,622.00

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...

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$ 2,025.00
$ 2,025.00 - $ 2,025.00
$ 2,025.00
$ 1,622.00
$ 1,622.00 - $ 1,622.00
$ 1,622.00
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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$ 1,999.00
$ 1,999.00 - $ 1,999.00
$ 1,999.00
$ 1,599.00
$ 1,599.00 - $ 1,599.00
$ 1,599.00

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
$ 1,999.00
$ 1,999.00 - $ 1,999.00
$ 1,999.00
$ 1,599.00
$ 1,599.00 - $ 1,599.00
$ 1,599.00
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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$ 1,864.00
$ 1,864.00 - $ 1,864.00
$ 1,864.00
$ 1,491.00
$ 1,491.00 - $ 1,491.00
$ 1,491.00

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...

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$ 1,864.00
$ 1,864.00 - $ 1,864.00
$ 1,864.00
$ 1,491.00
$ 1,491.00 - $ 1,491.00
$ 1,491.00
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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$ 651.00
$ 651.00 - $ 651.00
$ 651.00
$ 521.00
$ 521.00 - $ 521.00
$ 521.00

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...

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$ 651.00
$ 651.00 - $ 651.00
$ 651.00
$ 521.00
$ 521.00 - $ 521.00
$ 521.00
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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$ 858.00
$ 858.00 - $ 858.00
$ 858.00
$ 686.00
$ 686.00 - $ 686.00
$ 686.00

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...

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$ 858.00
$ 858.00 - $ 858.00
$ 858.00
$ 686.00
$ 686.00 - $ 686.00
$ 686.00
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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$ 907.00
$ 907.00 - $ 907.00
$ 907.00
$ 726.00
$ 726.00 - $ 726.00
$ 726.00

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...

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$ 907.00
$ 907.00 - $ 907.00
$ 907.00
$ 726.00
$ 726.00 - $ 726.00
$ 726.00
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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$ 705.00
$ 705.00 - $ 705.00
$ 705.00
$ 564.00
$ 564.00 - $ 564.00
$ 564.00

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...

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$ 705.00
$ 705.00 - $ 705.00
$ 705.00
$ 564.00
$ 564.00 - $ 564.00
$ 564.00
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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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$ 374.00
$ 374.00 - $ 374.00
$ 374.00
$ 300.00
$ 300.00 - $ 300.00
$ 300.00

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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$ 374.00
$ 374.00 - $ 374.00
$ 374.00
$ 300.00
$ 300.00 - $ 300.00
$ 300.00
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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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$ 449.00
$ 449.00 - $ 449.00
$ 449.00
$ 359.00
$ 359.00 - $ 359.00
$ 359.00

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...

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$ 449.00
$ 449.00 - $ 449.00
$ 449.00
$ 359.00
$ 359.00 - $ 359.00
$ 359.00
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