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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.

  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €21,95 - €21,95
    €21,95
    €21,95 - €21,95
    €21,95

    Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH1B is a brass 1/8" coupler from the ISO-...

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    €21,95 - €21,95
    €21,95
    €21,95 - €21,95
    €21,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €21,95 - €21,95
    €21,95
    €21,95 - €21,95
    €21,95

    Foster BLH1S, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH1S is a plated steel 1/8" coupler from t...

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    €21,95 - €21,95
    €21,95
    €21,95 - €21,95
    €21,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €53,95 - €53,95
    €53,95
    €53,95 - €53,95
    €53,95

    Foster BLH1S/S, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, 303 Stainless Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH1S/S is a 303 stainless steel 1/8" coupl...

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    €53,95 - €53,95
    €53,95
    €53,95 - €53,95
    €53,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €24,95 - €24,95
    €24,95
    €24,95 - €24,95
    €24,95

    Foster BLH1S4, 1/8" ISO-B Hydraulic Coupler x 7/16"-20 SAE, ISO-B Series, Ball Lock, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH1S4 is a plated steel 1/8" coupler from ...

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    €24,95 - €24,95
    €24,95
    €24,95 - €24,95
    €24,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €26,95 - €26,95
    €26,95
    €26,95 - €26,95
    €26,95

    Foster BLH2B, 1/4" ISO-B Hydraulic Coupler x 1/4" Female NPT, ISO-B Series, Ball Lock, Brass

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH2B is a brass 1/4" coupler from the ISO-...

    View full details
    €26,95 - €26,95
    €26,95
    €26,95 - €26,95
    €26,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €22,95 - €22,95
    €22,95
    €22,95 - €22,95
    €22,95

    Foster BLH2S, 1/4" ISO-B Hydraulic Coupler x 1/4" Female NPT, ISO-B Series, Ball Lock, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH2S is a plated steel 1/4" coupler from t...

    View full details
    €22,95 - €22,95
    €22,95
    €22,95 - €22,95
    €22,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €54,95 - €54,95
    €54,95
    €54,95 - €54,95
    €54,95

    Foster BLH2S/S, 1/4" ISO-B Hydraulic Coupler x 1/4" Female NPT, ISO-B Series, Ball Lock, 303 Stainless Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH2S/S is a 303 stainless steel 1/4" coupl...

    View full details
    €54,95 - €54,95
    €54,95
    €54,95 - €54,95
    €54,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €25,95 - €25,95
    €25,95
    €25,95 - €25,95
    €25,95

    Foster BLH2S6, 1/4" ISO-B Hydraulic Coupler x 9/16"-18 SAE, ISO-B Series, Ball Lock, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH2S6 is a plated steel 1/4" coupler from ...

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    €25,95 - €25,95
    €25,95
    €25,95 - €25,95
    €25,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €34,95 - €34,95
    €34,95
    €34,95 - €34,95
    €34,95

    Foster BLH3B, 3/8" ISO-B Hydraulic Coupler x 3/8" Female NPT, ISO-B Series, Ball Lock, Brass

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH3B is a brass 3/8" coupler from the ISO-...

    View full details
    €34,95 - €34,95
    €34,95
    €34,95 - €34,95
    €34,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €33,95 - €33,95
    €33,95
    €33,95 - €33,95
    €33,95

    Foster BLH3S, 3/8" ISO-B Hydraulic Coupler x 3/8" Female NPT, ISO-B Series, Ball Lock, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH3S is a plated steel 3/8" coupler from t...

    View full details
    €33,95 - €33,95
    €33,95
    €33,95 - €33,95
    €33,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €71,95 - €71,95
    €71,95
    €71,95 - €71,95
    €71,95

    Foster BLH3S/S, 3/8" ISO-B Hydraulic Coupler x 3/8" Female NPT, ISO-B Series, Ball Lock, 303 Stainless Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH3S/S is a 303 stainless steel 3/8" coupl...

    View full details
    €71,95 - €71,95
    €71,95
    €71,95 - €71,95
    €71,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €37,95 - €37,95
    €37,95
    €37,95 - €37,95
    €37,95

    Foster BLH3S8, 3/8" ISO-B Hydraulic Coupler x 3/4"-16 SAE, ISO-B Series, Ball Lock, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH3S8 is a plated steel 3/8" coupler from ...

    View full details
    €37,95 - €37,95
    €37,95
    €37,95 - €37,95
    €37,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €53,95 - €53,95
    €53,95
    €53,95 - €53,95
    €53,95

    Foster BLH4B, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, Ball Lock, Brass

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH4B is a brass 1/2" coupler from the ISO-...

    View full details
    €53,95 - €53,95
    €53,95
    €53,95 - €53,95
    €53,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €41,95 - €41,95
    €41,95
    €41,95 - €41,95
    €41,95

    Foster BLH4S, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, Ball Lock, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH4S is a plated steel 1/2" coupler from t...

    View full details
    €41,95 - €41,95
    €41,95
    €41,95 - €41,95
    €41,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €120,95 - €120,95
    €120,95
    €120,95 - €120,95
    €120,95

    Foster BLH4S/S, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, Ball Lock, 303 Stainless Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH4S/S is a 303 stainless steel 1/2" coupl...

    View full details
    €120,95 - €120,95
    €120,95
    €120,95 - €120,95
    €120,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €50,95 - €50,95
    €50,95
    €50,95 - €50,95
    €50,95

    Foster BLH4S10, 1/2" ISO-B Hydraulic Coupler x 7/8"-14 SAE, ISO-B Series, Ball Lock, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH4S10 is a plated steel 1/2" coupler from...

    View full details
    €50,95 - €50,95
    €50,95
    €50,95 - €50,95
    €50,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €92,95 - €92,95
    €92,95
    €92,95 - €92,95
    €92,95

    Foster BLH6B, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, Ball Lock, Brass

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH6B is a brass 3/4" coupler from the ISO-...

    View full details
    €92,95 - €92,95
    €92,95
    €92,95 - €92,95
    €92,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €71,95 - €71,95
    €71,95
    €71,95 - €71,95
    €71,95

    Foster BLH6S, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, Ball Lock, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH6S is a plated steel 3/4" coupler from t...

    View full details
    €71,95 - €71,95
    €71,95
    €71,95 - €71,95
    €71,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €194,95 - €194,95
    €194,95
    €194,95 - €194,95
    €194,95

    Foster BLH6S/S, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, Ball Lock, 303 Stainless Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH6S/S is a 303 stainless steel 3/4" coupl...

    View full details
    €194,95 - €194,95
    €194,95
    €194,95 - €194,95
    €194,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €72,95 - €72,95
    €72,95
    €72,95 - €72,95
    €72,95

    Foster BLH6S12, 3/4" ISO-B Hydraulic Coupler x 1-1/16"-12 SAE, ISO-B Series, Ball Lock, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH6S12 is a plated steel 3/4" coupler from...

    View full details
    €72,95 - €72,95
    €72,95
    €72,95 - €72,95
    €72,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €134,95 - €134,95
    €134,95
    €134,95 - €134,95
    €134,95

    Foster BLH8B, 1" ISO-B Hydraulic Coupler x 1" Female NPT, ISO-B Series, Ball Lock, Brass

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH8B is a brass 1" coupler from the ISO-B ...

    View full details
    €134,95 - €134,95
    €134,95
    €134,95 - €134,95
    €134,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €86,95 - €86,95
    €86,95
    €86,95 - €86,95
    €86,95

    Foster BLH8S, 1" ISO-B Hydraulic Coupler x 1" Female NPT, ISO-B Series, Ball Lock, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH8S is a plated steel 1" coupler from the...

    View full details
    €86,95 - €86,95
    €86,95
    €86,95 - €86,95
    €86,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €286,95 - €286,95
    €286,95
    €286,95 - €286,95
    €286,95

    Foster BLH8S/S, 1" ISO-B Hydraulic Coupler x 1" Female NPT, ISO-B Series, Ball Lock, 303 Stainless Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH8S/S is a 303 stainless steel 1" coupler...

    View full details
    €286,95 - €286,95
    €286,95
    €286,95 - €286,95
    €286,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €97,95 - €97,95
    €97,95
    €97,95 - €97,95
    €97,95

    Foster BLH8S16, 1" ISO-B Hydraulic Coupler x 15/16"-12 SAE, ISO-B Series, Ball Lock, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster BLH8S16 is a plated steel 1" coupler from t...

    View full details
    €97,95 - €97,95
    €97,95
    €97,95 - €97,95
    €97,95