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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 %
$ 467.00
$ 467.00 - $ 467.00
$ 467.00
$ 374.00
$ 374.00 - $ 374.00
$ 374.00

Foster K1S/S, 1/8" ISO-B Hydraulic Plug x 1/8" 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 K1S/S is a 303 stainless 1/8" plug in the...

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$ 467.00
$ 467.00 - $ 467.00
$ 467.00
$ 374.00
$ 374.00 - $ 374.00
$ 374.00
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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 %
$ 521.00
$ 521.00 - $ 521.00
$ 521.00
$ 417.00
$ 417.00 - $ 417.00
$ 417.00

Foster K1S/S-101, 1/8" ISO-B Hydraulic Plug x 1/8" 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 K1S/S-101 is a 303 stainless 1/8" plug in...

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$ 521.00
$ 521.00 - $ 521.00
$ 521.00
$ 417.00
$ 417.00 - $ 417.00
$ 417.00
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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 %
$ 182.00
$ 182.00 - $ 182.00
$ 182.00
$ 146.00
$ 146.00 - $ 146.00
$ 146.00

Foster K1S4, 1/8" ISO-B Hydraulic Plug x 7/16"-20 SAE, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K1S4 is a steel 1/8" plug in the FHK Seri...

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$ 182.00
$ 182.00 - $ 182.00
$ 182.00
$ 146.00
$ 146.00 - $ 146.00
$ 146.00
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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 %
$ 239.00
$ 239.00 - $ 239.00
$ 239.00
$ 192.00
$ 192.00 - $ 192.00
$ 192.00

Foster K2B, 1/4" ISO-B Hydraulic Plug x 1/4" Female NPT, ISO-B Series, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2B is a brass 1/4" plug in the FHK Serie...

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$ 239.00
$ 239.00 - $ 239.00
$ 239.00
$ 192.00
$ 192.00 - $ 192.00
$ 192.00
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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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$ 323.00
$ 323.00 - $ 323.00
$ 323.00
$ 259.00
$ 259.00 - $ 259.00
$ 259.00

Foster K2B-101, 1/4" ISO-B Hydraulic Plug x 1/4" 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 K2B-101 is a brass 1/4" plug in the FHK S...

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$ 323.00
$ 323.00 - $ 323.00
$ 323.00
$ 259.00
$ 259.00 - $ 259.00
$ 259.00
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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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$ 323.00
$ 323.00 - $ 323.00
$ 323.00
$ 257.00
$ 257.00 - $ 257.00
$ 257.00

Foster K2B-102, 1/4" ISO-B Hydraulic Plug x 1/4" 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 K2B-102 is a brass 1/4" plug in the FHK S...

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$ 323.00
$ 323.00 - $ 323.00
$ 323.00
$ 257.00
$ 257.00 - $ 257.00
$ 257.00
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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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$ 308.00
$ 308.00 - $ 308.00
$ 308.00
$ 246.00
$ 246.00 - $ 246.00
$ 246.00

Foster K2B-103, 1/4" ISO-B Hydraulic Plug x 1/4" 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 K2B-103 is a brass 1/4" plug in the FHK S...

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$ 308.00
$ 308.00 - $ 308.00
$ 308.00
$ 246.00
$ 246.00 - $ 246.00
$ 246.00
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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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$ 334.00
$ 334.00 - $ 334.00
$ 334.00
$ 268.00
$ 268.00 - $ 268.00
$ 268.00

Foster K2B-104, 1/4" ISO-B Hydraulic Plug x 1/4" 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 K2B-104 is a brass 1/4" plug in the FHK S...

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$ 334.00
$ 334.00 - $ 334.00
$ 334.00
$ 268.00
$ 268.00 - $ 268.00
$ 268.00
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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 %
$ 252.00
$ 252.00 - $ 252.00
$ 252.00
$ 203.00
$ 203.00 - $ 203.00
$ 203.00

Foster K2BLV, 1/4" ISO-B Hydraulic Plug x 1/4" Female NPT, ISO-B Series, Less Valve, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2BLV is a brass 1/4" plug in the FHK Ser...

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$ 252.00
$ 252.00 - $ 252.00
$ 252.00
$ 203.00
$ 203.00 - $ 203.00
$ 203.00
Save 19% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 19% Save %
$ 206.00
$ 206.00 - $ 206.00
$ 206.00
$ 166.00
$ 166.00 - $ 166.00
$ 166.00

Foster K2S, 1/4" ISO-B Hydraulic Plug x 1/4" Female NPT, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2S is a steel 1/4" plug in the FHK Serie...

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$ 206.00
$ 206.00 - $ 206.00
$ 206.00
$ 166.00
$ 166.00 - $ 166.00
$ 166.00
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 %
$ 268.00
$ 268.00 - $ 268.00
$ 268.00
$ 215.00
$ 215.00 - $ 215.00
$ 215.00

Foster K2S-101, 1/4" ISO-B Hydraulic Plug x 1/4" 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 K2S-101 is a steel 1/4" plug in the FHK S...

View full details
$ 268.00
$ 268.00 - $ 268.00
$ 268.00
$ 215.00
$ 215.00 - $ 215.00
$ 215.00
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 %
$ 264.00
$ 264.00 - $ 264.00
$ 264.00
$ 212.00
$ 212.00 - $ 212.00
$ 212.00

Foster K2S-103, 1/4" ISO-B Hydraulic Plug x 1/4" 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 K2S-103 is a steel 1/4" plug in the FHK S...

View full details
$ 264.00
$ 264.00 - $ 264.00
$ 264.00
$ 212.00
$ 212.00 - $ 212.00
$ 212.00
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 %
$ 272.00
$ 272.00 - $ 272.00
$ 272.00
$ 217.00
$ 217.00 - $ 217.00
$ 217.00

Foster K2S-104, 1/4" ISO-B Hydraulic Plug x 1/4" 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 K2S-104 is a steel 1/4" plug in the FHK S...

View full details
$ 272.00
$ 272.00 - $ 272.00
$ 272.00
$ 217.00
$ 217.00 - $ 217.00
$ 217.00
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 %
$ 456.00
$ 456.00 - $ 456.00
$ 456.00
$ 365.00
$ 365.00 - $ 365.00
$ 365.00

Foster K2S/S, 1/4" ISO-B Hydraulic Plug x 1/4" 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 K2S/S is a 303 stainless 1/4" plug in the...

View full details
$ 456.00
$ 456.00 - $ 456.00
$ 456.00
$ 365.00
$ 365.00 - $ 365.00
$ 365.00
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 %
$ 521.00
$ 521.00 - $ 521.00
$ 521.00
$ 417.00
$ 417.00 - $ 417.00
$ 417.00

Foster K2S/S-101, 1/4" ISO-B Hydraulic Plug x 1/4" 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 K2S/S-101 is a 303 stainless 1/4" plug in...

View full details
$ 521.00
$ 521.00 - $ 521.00
$ 521.00
$ 417.00
$ 417.00 - $ 417.00
$ 417.00
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 %
$ 518.00
$ 518.00 - $ 518.00
$ 518.00
$ 416.00
$ 416.00 - $ 416.00
$ 416.00

Foster K2S/S-103, 1/4" ISO-B Hydraulic Plug x 1/4" 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 K2S/S-103 is a 303 stainless 1/4" plug in...

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$ 518.00
$ 518.00 - $ 518.00
$ 518.00
$ 416.00
$ 416.00 - $ 416.00
$ 416.00
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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$ 527.00
$ 527.00 - $ 527.00
$ 527.00
$ 423.00
$ 423.00 - $ 423.00
$ 423.00

Foster K2S/S-104, 1/4" ISO-B Hydraulic Plug x 1/4" Female NPT, ISO-B Series, Silicone Seal, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2S/S-104 is a 303 stainless 1/4" plug in...

View full details
$ 527.00
$ 527.00 - $ 527.00
$ 527.00
$ 423.00
$ 423.00 - $ 423.00
$ 423.00
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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$ 465.00
$ 465.00 - $ 465.00
$ 465.00
$ 372.00
$ 372.00 - $ 372.00
$ 372.00

Foster K2S/SLV, 1/4" ISO-B Hydraulic Plug x 1/4" 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 K2S/SLV is a 303 stainless 1/4" plug in t...

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$ 465.00
$ 465.00 - $ 465.00
$ 465.00
$ 372.00
$ 372.00 - $ 372.00
$ 372.00
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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$ 297.00
$ 297.00 - $ 297.00
$ 297.00
$ 237.00
$ 237.00 - $ 237.00
$ 237.00

Foster K2S6, 1/4" ISO-B Hydraulic Plug x 9/16"-18 SAE, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2S6 is a steel 1/4" plug in the FHK Seri...

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$ 297.00
$ 297.00 - $ 297.00
$ 297.00
$ 237.00
$ 237.00 - $ 237.00
$ 237.00
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 %
$ 210.00
$ 210.00 - $ 210.00
$ 210.00
$ 168.00
$ 168.00 - $ 168.00
$ 168.00

Foster K2SLV, 1/4" ISO-B Hydraulic Plug x 1/4" 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 K2SLV is a steel 1/4" plug in the FHK Ser...

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$ 210.00
$ 210.00 - $ 210.00
$ 210.00
$ 168.00
$ 168.00 - $ 168.00
$ 168.00
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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$ 332.00
$ 332.00 - $ 332.00
$ 332.00
$ 266.00
$ 266.00 - $ 266.00
$ 266.00

Foster K3B, 3/8" ISO-B Hydraulic Plug x 3/8" Female NPT, ISO-B Series, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K3B is a brass 3/8" plug in the FHK Serie...

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$ 332.00
$ 332.00 - $ 332.00
$ 332.00
$ 266.00
$ 266.00 - $ 266.00
$ 266.00
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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$ 445.00
$ 445.00 - $ 445.00
$ 445.00
$ 357.00
$ 357.00 - $ 357.00
$ 357.00

Foster K3B-101, 3/8" ISO-B Hydraulic Plug x 3/8" 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 K3B-101 is a brass 3/8" plug in the FHK S...

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$ 445.00
$ 445.00 - $ 445.00
$ 445.00
$ 357.00
$ 357.00 - $ 357.00
$ 357.00
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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$ 434.00
$ 434.00 - $ 434.00
$ 434.00
$ 348.00
$ 348.00 - $ 348.00
$ 348.00

Foster K3B-102, 3/8" ISO-B Hydraulic Plug x 3/8" 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 K3B-102 is a brass 3/8" plug in the FHK S...

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$ 434.00
$ 434.00 - $ 434.00
$ 434.00
$ 348.00
$ 348.00 - $ 348.00
$ 348.00
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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$ 407.00
$ 407.00 - $ 407.00
$ 407.00
$ 326.00
$ 326.00 - $ 326.00
$ 326.00

Foster K3B-103, 3/8" ISO-B Hydraulic Plug x 3/8" 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 K3B-103 is a brass 3/8" plug in the FHK S...

View full details
$ 407.00
$ 407.00 - $ 407.00
$ 407.00
$ 326.00
$ 326.00 - $ 326.00
$ 326.00
Save 20% Save %

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