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Foster ISO-B Series Couplers

Foster ISO-B (FHK) Series hydraulic quick couplers and plugs, compatible with ISO 7241-1 Series B — the most widely used industrial hydraulic interchange. Two-way shut-off seals both halves at disconnect to prevent fluid loss and air inclusion. Manual sleeve connection at zero pressure. Body sizes 1/8" to 1", in RoHS-plated steel, brass, and 303/316 stainless with Buna-N seals.

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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 %
$ 791.00
$ 791.00 - $ 791.00
$ 791.00
$ 632.00
$ 632.00 - $ 632.00
$ 632.00

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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$ 791.00
$ 791.00 - $ 791.00
$ 791.00
$ 632.00
$ 632.00 - $ 632.00
$ 632.00
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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 %
$ 827.00
$ 827.00 - $ 827.00
$ 827.00
$ 663.00
$ 663.00 - $ 663.00
$ 663.00

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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$ 827.00
$ 827.00 - $ 827.00
$ 827.00
$ 663.00
$ 663.00 - $ 663.00
$ 663.00
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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 %
$ 1,642.00
$ 1,642.00 - $ 1,642.00
$ 1,642.00
$ 1,314.00
$ 1,314.00 - $ 1,314.00
$ 1,314.00

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

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$ 1,642.00
$ 1,642.00 - $ 1,642.00
$ 1,642.00
$ 1,314.00
$ 1,314.00 - $ 1,314.00
$ 1,314.00
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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 %
$ 1,740.00
$ 1,740.00 - $ 1,740.00
$ 1,740.00
$ 1,392.00
$ 1,392.00 - $ 1,392.00
$ 1,392.00

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...

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$ 1,740.00
$ 1,740.00 - $ 1,740.00
$ 1,740.00
$ 1,392.00
$ 1,392.00 - $ 1,392.00
$ 1,392.00
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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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$ 818.00
$ 818.00 - $ 818.00
$ 818.00
$ 654.00
$ 654.00 - $ 654.00
$ 654.00

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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$ 818.00
$ 818.00 - $ 818.00
$ 818.00
$ 654.00
$ 654.00 - $ 654.00
$ 654.00
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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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$ 1,162.00
$ 1,162.00 - $ 1,162.00
$ 1,162.00
$ 929.00
$ 929.00 - $ 929.00
$ 929.00

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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$ 1,162.00
$ 1,162.00 - $ 1,162.00
$ 1,162.00
$ 929.00
$ 929.00 - $ 929.00
$ 929.00
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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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$ 1,388.00
$ 1,388.00 - $ 1,388.00
$ 1,388.00
$ 1,111.00
$ 1,111.00 - $ 1,111.00
$ 1,111.00

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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$ 1,388.00
$ 1,388.00 - $ 1,388.00
$ 1,388.00
$ 1,111.00
$ 1,111.00 - $ 1,111.00
$ 1,111.00
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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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$ 1,303.00
$ 1,303.00 - $ 1,303.00
$ 1,303.00
$ 1,042.00
$ 1,042.00 - $ 1,042.00
$ 1,042.00

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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$ 1,303.00
$ 1,303.00 - $ 1,303.00
$ 1,303.00
$ 1,042.00
$ 1,042.00 - $ 1,042.00
$ 1,042.00
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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 %
$ 1,317.00
$ 1,317.00 - $ 1,317.00
$ 1,317.00
$ 1,055.00
$ 1,055.00 - $ 1,055.00
$ 1,055.00

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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$ 1,317.00
$ 1,317.00 - $ 1,317.00
$ 1,317.00
$ 1,055.00
$ 1,055.00 - $ 1,055.00
$ 1,055.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 19% Save %
$ 224.00
$ 224.00 - $ 224.00
$ 224.00
$ 181.00
$ 181.00 - $ 181.00
$ 181.00

Foster H4DP, 1/2" ISO-B Dust Plug, FHK Series, Aluminum

The Foster H4DP is a 1/2" ISO-B dust plug in aluminum for FHK / ISO 7241-1 Series B hydraulic quick couplings. It protects plug (male half) from di...

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$ 224.00
$ 224.00 - $ 224.00
$ 224.00
$ 181.00
$ 181.00 - $ 181.00
$ 181.00
Save 19% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 911.00
$ 911.00 - $ 911.00
$ 911.00
$ 729.00
$ 729.00 - $ 729.00
$ 729.00

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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$ 911.00
$ 911.00 - $ 911.00
$ 911.00
$ 729.00
$ 729.00 - $ 729.00
$ 729.00
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 %
$ 1,057.00
$ 1,057.00 - $ 1,057.00
$ 1,057.00
$ 846.00
$ 846.00 - $ 846.00
$ 846.00

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...

View full details
$ 1,057.00
$ 1,057.00 - $ 1,057.00
$ 1,057.00
$ 846.00
$ 846.00 - $ 846.00
$ 846.00
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 %
$ 1,020.00
$ 1,020.00 - $ 1,020.00
$ 1,020.00
$ 816.00
$ 816.00 - $ 816.00
$ 816.00

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...

View full details
$ 1,020.00
$ 1,020.00 - $ 1,020.00
$ 1,020.00
$ 816.00
$ 816.00 - $ 816.00
$ 816.00
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 %
$ 2,888.00
$ 2,888.00 - $ 2,888.00
$ 2,888.00
$ 2,310.00
$ 2,310.00 - $ 2,310.00
$ 2,310.00

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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$ 2,888.00
$ 2,888.00 - $ 2,888.00
$ 2,888.00
$ 2,310.00
$ 2,310.00 - $ 2,310.00
$ 2,310.00
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 %
$ 2,993.00
$ 2,993.00 - $ 2,993.00
$ 2,993.00
$ 2,394.00
$ 2,394.00 - $ 2,394.00
$ 2,394.00

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
$ 2,993.00
$ 2,993.00 - $ 2,993.00
$ 2,993.00
$ 2,394.00
$ 2,394.00 - $ 2,394.00
$ 2,394.00
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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$ 3,035.00
$ 3,035.00 - $ 3,035.00
$ 3,035.00
$ 2,428.00
$ 2,428.00 - $ 2,428.00
$ 2,428.00

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
$ 3,035.00
$ 3,035.00 - $ 3,035.00
$ 3,035.00
$ 2,428.00
$ 2,428.00 - $ 2,428.00
$ 2,428.00
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 %
$ 1,126.00
$ 1,126.00 - $ 1,126.00
$ 1,126.00
$ 900.00
$ 900.00 - $ 900.00
$ 900.00

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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$ 1,126.00
$ 1,126.00 - $ 1,126.00
$ 1,126.00
$ 900.00
$ 900.00 - $ 900.00
$ 900.00
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 %
$ 2,048.00
$ 2,048.00 - $ 2,048.00
$ 2,048.00
$ 1,638.00
$ 1,638.00 - $ 1,638.00
$ 1,638.00

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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$ 2,048.00
$ 2,048.00 - $ 2,048.00
$ 2,048.00
$ 1,638.00
$ 1,638.00 - $ 1,638.00
$ 1,638.00
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 %
$ 2,383.00
$ 2,383.00 - $ 2,383.00
$ 2,383.00
$ 1,908.00
$ 1,908.00 - $ 1,908.00
$ 1,908.00

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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$ 2,383.00
$ 2,383.00 - $ 2,383.00
$ 2,383.00
$ 1,908.00
$ 1,908.00 - $ 1,908.00
$ 1,908.00
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 %
$ 2,237.00
$ 2,237.00 - $ 2,237.00
$ 2,237.00
$ 1,791.00
$ 1,791.00 - $ 1,791.00
$ 1,791.00

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...

View full details
$ 2,237.00
$ 2,237.00 - $ 2,237.00
$ 2,237.00
$ 1,791.00
$ 1,791.00 - $ 1,791.00
$ 1,791.00
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 %
$ 2,345.00
$ 2,345.00 - $ 2,345.00
$ 2,345.00
$ 1,877.00
$ 1,877.00 - $ 1,877.00
$ 1,877.00

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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$ 2,345.00
$ 2,345.00 - $ 2,345.00
$ 2,345.00
$ 1,877.00
$ 1,877.00 - $ 1,877.00
$ 1,877.00
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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$ 292.00
$ 292.00 - $ 292.00
$ 292.00
$ 233.00
$ 233.00 - $ 233.00
$ 233.00

Foster H6DP, 3/4" ISO-B Dust Plug, FHK Series, Aluminum

The Foster H6DP is a 3/4" ISO-B dust plug in aluminum for FHK / ISO 7241-1 Series B hydraulic quick couplings. It protects plug (male half) from di...

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$ 292.00
$ 292.00 - $ 292.00
$ 292.00
$ 233.00
$ 233.00 - $ 233.00
$ 233.00
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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$ 1,605.00
$ 1,605.00 - $ 1,605.00
$ 1,605.00
$ 1,285.00
$ 1,285.00 - $ 1,285.00
$ 1,285.00

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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$ 1,605.00
$ 1,605.00 - $ 1,605.00
$ 1,605.00
$ 1,285.00
$ 1,285.00 - $ 1,285.00
$ 1,285.00
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 %
$ 1,811.00
$ 1,811.00 - $ 1,811.00
$ 1,811.00
$ 1,450.00
$ 1,450.00 - $ 1,450.00
$ 1,450.00

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...

View full details
$ 1,811.00
$ 1,811.00 - $ 1,811.00
$ 1,811.00
$ 1,450.00
$ 1,450.00 - $ 1,450.00
$ 1,450.00
Save 20% Save %

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