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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
    €20,95 - €20,95
    €20,95
    €20,95 - €20,95
    €20,95

    Foster H2S6, 1/4" ISO-B Hydraulic Coupler x 9/16"-18 SAE, ISO-B Series, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H2S6 is a plated steel 1/4" coupler from th...

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    €20,95 - €20,95
    €20,95
    €20,95 - €20,95
    €20,95
  • 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 H3B, 3/8" ISO-B Hydraulic Coupler x 3/8" Female NPT, ISO-B Series, Brass

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H3B is a brass 3/8" coupler from the ISO-B ...

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    €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
    €31,95 - €31,95
    €31,95
    €31,95 - €31,95
    €31,95

    Foster H3B-101, 3/8" ISO-B Hydraulic Coupler x 3/8" Female NPT, ISO-B Series, Viton Seal, Brass

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H3B-101 is a brass 3/8" coupler from the IS...

    View full details
    €31,95 - €31,95
    €31,95
    €31,95 - €31,95
    €31,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €32,95 - €32,95
    €32,95
    €32,95 - €32,95
    €32,95

    Foster H3B-102, 3/8" ISO-B Hydraulic Coupler x 3/8" Female NPT, ISO-B Series, Neoprene Seal, Brass

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H3B-102 is a brass 3/8" coupler from the IS...

    View full details
    €32,95 - €32,95
    €32,95
    €32,95 - €32,95
    €32,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €30,95 - €30,95
    €30,95
    €30,95 - €30,95
    €30,95

    Foster H3B-103, 3/8" ISO-B Hydraulic Coupler x 3/8" Female NPT, ISO-B Series, EPDM Seal, Brass

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H3B-103 is a brass 3/8" coupler from the IS...

    View full details
    €30,95 - €30,95
    €30,95
    €30,95 - €30,95
    €30,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €32,95 - €32,95
    €32,95
    €32,95 - €32,95
    €32,95

    Foster H3B-104, 3/8" ISO-B Hydraulic Coupler x 3/8" Female NPT, ISO-B Series, Silicone Seal, Brass

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H3B-104 is a brass 3/8" coupler from the IS...

    View full details
    €32,95 - €32,95
    €32,95
    €32,95 - €32,95
    €32,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €27,95 - €27,95
    €27,95
    €27,95 - €27,95
    €27,95

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

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H3S is a plated steel 3/8" coupler from the...

    View full details
    €27,95 - €27,95
    €27,95
    €27,95 - €27,95
    €27,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €31,95 - €31,95
    €31,95
    €31,95 - €31,95
    €31,95

    Foster H3S-101, 3/8" ISO-B Hydraulic Coupler x 3/8" Female NPT, ISO-B Series, Viton Seal, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H3S-101 is a plated steel 3/8" coupler from...

    View full details
    €31,95 - €31,95
    €31,95
    €31,95 - €31,95
    €31,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €32,95 - €32,95
    €32,95
    €32,95 - €32,95
    €32,95

    Foster H3S-102, 3/8" ISO-B Hydraulic Coupler x 3/8" Female NPT, ISO-B Series, Neoprene Seal, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H3S-102 is a plated steel 3/8" coupler from...

    View full details
    €32,95 - €32,95
    €32,95
    €32,95 - €32,95
    €32,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €30,95 - €30,95
    €30,95
    €30,95 - €30,95
    €30,95

    Foster H3S-103, 3/8" ISO-B Hydraulic Coupler x 3/8" Female NPT, ISO-B Series, EPDM Seal, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H3S-103 is a plated steel 3/8" coupler from...

    View full details
    €30,95 - €30,95
    €30,95
    €30,95 - €30,95
    €30,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €32,95 - €32,95
    €32,95
    €32,95 - €32,95
    €32,95

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

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H3S-104 is a plated steel 3/8" coupler from...

    View full details
    €32,95 - €32,95
    €32,95
    €32,95 - €32,95
    €32,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €64,95 - €64,95
    €64,95
    €64,95 - €64,95
    €64,95

    Foster H3S/S, 3/8" ISO-B Hydraulic Coupler x 3/8" Female NPT, ISO-B Series, 303 Stainless Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H3S/S is a 303 stainless steel 3/8" coupler...

    View full details
    €64,95 - €64,95
    €64,95
    €64,95 - €64,95
    €64,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €67,95 - €67,95
    €67,95
    €67,95 - €67,95
    €67,95

    Foster H3S/S-101, 3/8" ISO-B Hydraulic Coupler x 3/8" Female NPT, ISO-B Series, Viton Seal, 303 Stainless Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H3S/S-101 is a 303 stainless steel 3/8" cou...

    View full details
    €67,95 - €67,95
    €67,95
    €67,95 - €67,95
    €67,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €31,95 - €31,95
    €31,95
    €31,95 - €31,95
    €31,95

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

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H3S8 is a plated steel 3/8" coupler from th...

    View full details
    €31,95 - €31,95
    €31,95
    €31,95 - €31,95
    €31,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €45,95 - €45,95
    €45,95
    €45,95 - €45,95
    €45,95

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

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H4B is a brass 1/2" coupler from the ISO-B ...

    View full details
    €45,95 - €45,95
    €45,95
    €45,95 - €45,95
    €45,95
  • 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 H4B-101, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, Viton Seal, Brass

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H4B-101 is a brass 1/2" coupler from the IS...

    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
    €50,95 - €50,95
    €50,95
    €50,95 - €50,95
    €50,95

    Foster H4B-102, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, Neoprene Seal, Brass

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H4B-102 is a brass 1/2" coupler from the IS...

    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
    €51,95 - €51,95
    €51,95
    €51,95 - €51,95
    €51,95

    Foster H4B-103, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, EPDM Seal, Brass

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H4B-103 is a brass 1/2" coupler from the IS...

    View full details
    €51,95 - €51,95
    €51,95
    €51,95 - €51,95
    €51,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €35,95 - €35,95
    €35,95
    €35,95 - €35,95
    €35,95

    Foster H4S, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H4S is a plated steel 1/2" coupler from the...

    View full details
    €35,95 - €35,95
    €35,95
    €35,95 - €35,95
    €35,95
  • 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 H4S-101, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, Viton Seal, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H4S-101 is a plated steel 1/2" coupler from...

    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
    €39,95 - €39,95
    €39,95
    €39,95 - €39,95
    €39,95

    Foster H4S-103, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, EPDM Seal, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H4S-103 is a plated steel 1/2" coupler from...

    View full details
    €39,95 - €39,95
    €39,95
    €39,95 - €39,95
    €39,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €112,95 - €112,95
    €112,95
    €112,95 - €112,95
    €112,95

    Foster H4S/S, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, 303 Stainless Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H4S/S is a 303 stainless steel 1/2" coupler...

    View full details
    €112,95 - €112,95
    €112,95
    €112,95 - €112,95
    €112,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €116,95 - €116,95
    €116,95
    €116,95 - €116,95
    €116,95

    Foster H4S/S-101, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, Viton Seal, 303 Stainless Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H4S/S-101 is a 303 stainless steel 1/2" cou...

    View full details
    €116,95 - €116,95
    €116,95
    €116,95 - €116,95
    €116,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €118,95 - €118,95
    €118,95
    €118,95 - €118,95
    €118,95

    Foster H4S/S-103, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, EPDM Seal, 303 Stainless Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H4S/S-103 is a 303 stainless steel 1/2" cou...

    View full details
    €118,95 - €118,95
    €118,95
    €118,95 - €118,95
    €118,95