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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 %
$ 5,235.00
$ 5,235.00 - $ 5,235.00
$ 5,235.00
$ 4,188.00
$ 4,188.00 - $ 4,188.00
$ 4,188.00

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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$ 5,235.00
$ 5,235.00 - $ 5,235.00
$ 5,235.00
$ 4,188.00
$ 4,188.00 - $ 4,188.00
$ 4,188.00
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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 %
$ 4,935.00
$ 4,935.00 - $ 4,935.00
$ 4,935.00
$ 3,947.00
$ 3,947.00 - $ 3,947.00
$ 3,947.00

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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$ 4,935.00
$ 4,935.00 - $ 4,935.00
$ 4,935.00
$ 3,947.00
$ 3,947.00 - $ 3,947.00
$ 3,947.00
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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 %
$ 1,687.00
$ 1,687.00 - $ 1,687.00
$ 1,687.00
$ 1,350.00
$ 1,350.00 - $ 1,350.00
$ 1,350.00

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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$ 1,687.00
$ 1,687.00 - $ 1,687.00
$ 1,687.00
$ 1,350.00
$ 1,350.00 - $ 1,350.00
$ 1,350.00
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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 %
$ 2,464.00
$ 2,464.00 - $ 2,464.00
$ 2,464.00
$ 1,972.00
$ 1,972.00 - $ 1,972.00
$ 1,972.00

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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$ 2,464.00
$ 2,464.00 - $ 2,464.00
$ 2,464.00
$ 1,972.00
$ 1,972.00 - $ 1,972.00
$ 1,972.00
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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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$ 2,351.00
$ 2,351.00 - $ 2,351.00
$ 2,351.00
$ 1,882.00
$ 1,882.00 - $ 1,882.00
$ 1,882.00

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...

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$ 2,351.00
$ 2,351.00 - $ 2,351.00
$ 2,351.00
$ 1,882.00
$ 1,882.00 - $ 1,882.00
$ 1,882.00
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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 %
$ 2,504.00
$ 2,504.00 - $ 2,504.00
$ 2,504.00
$ 2,004.00
$ 2,004.00 - $ 2,004.00
$ 2,004.00

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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$ 2,504.00
$ 2,504.00 - $ 2,504.00
$ 2,504.00
$ 2,004.00
$ 2,004.00 - $ 2,004.00
$ 2,004.00
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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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$ 2,152.00
$ 2,152.00 - $ 2,152.00
$ 2,152.00
$ 1,721.00
$ 1,721.00 - $ 1,721.00
$ 1,721.00

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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$ 2,152.00
$ 2,152.00 - $ 2,152.00
$ 2,152.00
$ 1,721.00
$ 1,721.00 - $ 1,721.00
$ 1,721.00
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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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$ 1,072.00
$ 1,072.00 - $ 1,072.00
$ 1,072.00
$ 858.00
$ 858.00 - $ 858.00
$ 858.00

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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$ 1,072.00
$ 1,072.00 - $ 1,072.00
$ 1,072.00
$ 858.00
$ 858.00 - $ 858.00
$ 858.00
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 %
$ 1,110.00
$ 1,110.00 - $ 1,110.00
$ 1,110.00
$ 888.00
$ 888.00 - $ 888.00
$ 888.00

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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$ 1,110.00
$ 1,110.00 - $ 1,110.00
$ 1,110.00
$ 888.00
$ 888.00 - $ 888.00
$ 888.00
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 %
$ 1,183.00
$ 1,183.00 - $ 1,183.00
$ 1,183.00
$ 946.00
$ 946.00 - $ 946.00
$ 946.00

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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$ 1,183.00
$ 1,183.00 - $ 1,183.00
$ 1,183.00
$ 946.00
$ 946.00 - $ 946.00
$ 946.00
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 %
$ 3,189.00
$ 3,189.00 - $ 3,189.00
$ 3,189.00
$ 2,552.00
$ 2,552.00 - $ 2,552.00
$ 2,552.00

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...

View full details
$ 3,189.00
$ 3,189.00 - $ 3,189.00
$ 3,189.00
$ 2,552.00
$ 2,552.00 - $ 2,552.00
$ 2,552.00
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 %
$ 3,145.00
$ 3,145.00 - $ 3,145.00
$ 3,145.00
$ 2,515.00
$ 2,515.00 - $ 2,515.00
$ 2,515.00

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
$ 3,145.00
$ 3,145.00 - $ 3,145.00
$ 3,145.00
$ 2,515.00
$ 2,515.00 - $ 2,515.00
$ 2,515.00
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 %
$ 3,034.00
$ 3,034.00 - $ 3,034.00
$ 3,034.00
$ 2,427.00
$ 2,427.00 - $ 2,427.00
$ 2,427.00

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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$ 3,034.00
$ 3,034.00 - $ 3,034.00
$ 3,034.00
$ 2,427.00
$ 2,427.00 - $ 2,427.00
$ 2,427.00
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 %
$ 957.00
$ 957.00 - $ 957.00
$ 957.00
$ 766.00
$ 766.00 - $ 766.00
$ 766.00

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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$ 957.00
$ 957.00 - $ 957.00
$ 957.00
$ 766.00
$ 766.00 - $ 766.00
$ 766.00
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 %
$ 1,384.00
$ 1,384.00 - $ 1,384.00
$ 1,384.00
$ 1,109.00
$ 1,109.00 - $ 1,109.00
$ 1,109.00

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...

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$ 1,384.00
$ 1,384.00 - $ 1,384.00
$ 1,384.00
$ 1,109.00
$ 1,109.00 - $ 1,109.00
$ 1,109.00
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 %
$ 1,369.00
$ 1,369.00 - $ 1,369.00
$ 1,369.00
$ 1,095.00
$ 1,095.00 - $ 1,095.00
$ 1,095.00

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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$ 1,369.00
$ 1,369.00 - $ 1,369.00
$ 1,369.00
$ 1,095.00
$ 1,095.00 - $ 1,095.00
$ 1,095.00
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 %
$ 1,459.00
$ 1,459.00 - $ 1,459.00
$ 1,459.00
$ 1,168.00
$ 1,168.00 - $ 1,168.00
$ 1,168.00

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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$ 1,459.00
$ 1,459.00 - $ 1,459.00
$ 1,459.00
$ 1,168.00
$ 1,168.00 - $ 1,168.00
$ 1,168.00
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 %
$ 1,221.00
$ 1,221.00 - $ 1,221.00
$ 1,221.00
$ 976.00
$ 976.00 - $ 976.00
$ 976.00

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

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

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$ 1,221.00
$ 1,221.00 - $ 1,221.00
$ 1,221.00
$ 976.00
$ 976.00 - $ 976.00
$ 976.00
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 %
$ 860.00
$ 860.00 - $ 860.00
$ 860.00
$ 687.00
$ 687.00 - $ 687.00
$ 687.00

Foster H3S8, 3/8" ISO-B Hydraulic Coupler x 3/4"-16 SAE, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H3S8 is a steel 3/8" coupler in the FHK S...

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$ 860.00
$ 860.00 - $ 860.00
$ 860.00
$ 687.00
$ 687.00 - $ 687.00
$ 687.00
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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$ 869.00
$ 869.00 - $ 869.00
$ 869.00
$ 697.00
$ 697.00 - $ 697.00
$ 697.00

Foster H3S-104, 3/8" ISO-B Hydraulic Coupler x 3/8" Female NPT, ISO-B Series, Silicone Seal, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H3S-104 is a steel 3/8" coupler in the FH...

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$ 869.00
$ 869.00 - $ 869.00
$ 869.00
$ 697.00
$ 697.00 - $ 697.00
$ 697.00
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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$ 831.00
$ 831.00 - $ 831.00
$ 831.00
$ 664.00
$ 664.00 - $ 664.00
$ 664.00

Foster H3S-103, 3/8" ISO-B Hydraulic Coupler x 3/8" 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 H3S-103 is a steel 3/8" coupler in the FH...

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$ 831.00
$ 831.00 - $ 831.00
$ 831.00
$ 664.00
$ 664.00 - $ 664.00
$ 664.00
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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$ 864.00
$ 864.00 - $ 864.00
$ 864.00
$ 691.00
$ 691.00 - $ 691.00
$ 691.00

Foster H3S-102, 3/8" ISO-B Hydraulic Coupler x 3/8" 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 H3S-102 is a steel 3/8" coupler in the FH...

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$ 864.00
$ 864.00 - $ 864.00
$ 864.00
$ 691.00
$ 691.00 - $ 691.00
$ 691.00
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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$ 854.00
$ 854.00 - $ 854.00
$ 854.00
$ 684.00
$ 684.00 - $ 684.00
$ 684.00

Foster H3S-101, 3/8" ISO-B Hydraulic Coupler x 3/8" 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 H3S-101 is a steel 3/8" coupler in the FH...

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$ 854.00
$ 854.00 - $ 854.00
$ 854.00
$ 684.00
$ 684.00 - $ 684.00
$ 684.00
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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$ 1,828.00
$ 1,828.00 - $ 1,828.00
$ 1,828.00
$ 1,463.00
$ 1,463.00 - $ 1,463.00
$ 1,463.00

Foster H3S/S-101, 3/8" ISO-B Hydraulic Coupler x 3/8" 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 H3S/S-101 is a 303 stainless 3/8" coupler...

View full details
$ 1,828.00
$ 1,828.00 - $ 1,828.00
$ 1,828.00
$ 1,463.00
$ 1,463.00 - $ 1,463.00
$ 1,463.00
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