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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
    €78,95 - €78,95
    €78,95
    €78,95 - €78,95
    €78,95

    Foster H8SLV, 1" ISO-B Hydraulic Coupler x 1" Female NPT, ISO-B Series, Less Valve, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster H8SLV is a plated steel 1" coupler from the...

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    €78,95 - €78,95
    €78,95
    €78,95 - €78,95
    €78,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €6,95 - €6,95
    €6,95
    €6,95 - €6,95
    €6,95

    Foster K1B, 1/8" ISO-B Hydraulic Plug x 1/8" Female NPT, ISO-B Series, Brass

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster K1B is a brass 1/8" plug from the ISO-B Ser...

    View full details
    €6,95 - €6,95
    €6,95
    €6,95 - €6,95
    €6,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €10,95 - €10,95
    €10,95
    €10,95 - €10,95
    €10,95

    Foster K1B-101, 1/8" ISO-B Hydraulic Plug x 1/8" 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 K1B-101 is a brass 1/8" plug from the ISO-B...

    View full details
    €10,95 - €10,95
    €10,95
    €10,95 - €10,95
    €10,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €9,95 - €9,95
    €9,95
    €9,95 - €9,95
    €9,95

    Foster K1B-103, 1/8" ISO-B Hydraulic Plug x 1/8" 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 K1B-103 is a brass 1/8" plug from the ISO-B...

    View full details
    €9,95 - €9,95
    €9,95
    €9,95 - €9,95
    €9,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €7,95 - €7,95
    €7,95
    €7,95 - €7,95
    €7,95

    Foster K1BLV, 1/8" ISO-B Hydraulic Plug x 1/8" Female NPT, ISO-B Series, Less Valve, Brass

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster K1BLV is a brass 1/8" plug from the ISO-B S...

    View full details
    €7,95 - €7,95
    €7,95
    €7,95 - €7,95
    €7,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €6,95 - €6,95
    €6,95
    €6,95 - €6,95
    €6,95

    Foster K1S, 1/8" ISO-B Hydraulic Plug x 1/8" Female NPT, ISO-B Series, Plated Steel

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster K1S is a plated steel 1/8" plug from the IS...

    View full details
    €6,95 - €6,95
    €6,95
    €6,95 - €6,95
    €6,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €8,95 - €8,95
    €8,95
    €8,95 - €8,95
    €8,95

    Foster K1S-101, 1/8" ISO-B Hydraulic Plug x 1/8" 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 K1S-101 is a plated steel 1/8" plug from th...

    View full details
    €8,95 - €8,95
    €8,95
    €8,95 - €8,95
    €8,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €18,95 - €18,95
    €18,95
    €18,95 - €18,95
    €18,95

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

    View full details
    €18,95 - €18,95
    €18,95
    €18,95 - €18,95
    €18,95
  • 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 K1S/S-101, 1/8" ISO-B Hydraulic Plug x 1/8" 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 K1S/S-101 is a 303 stainless steel 1/8" plu...

    View full details
    €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
    €7,95 - €7,95
    €7,95
    €7,95 - €7,95
    €7,95

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

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster K1S4 is a plated steel 1/8" plug from the I...

    View full details
    €7,95 - €7,95
    €7,95
    €7,95 - €7,95
    €7,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €9,95 - €9,95
    €9,95
    €9,95 - €9,95
    €9,95

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

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster K2B is a brass 1/4" plug from the ISO-B Ser...

    View full details
    €9,95 - €9,95
    €9,95
    €9,95 - €9,95
    €9,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €12,95 - €12,95
    €12,95
    €12,95 - €12,95
    €12,95

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

    View full details
    €12,95 - €12,95
    €12,95
    €12,95 - €12,95
    €12,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €12,95 - €12,95
    €12,95
    €12,95 - €12,95
    €12,95

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

    View full details
    €12,95 - €12,95
    €12,95
    €12,95 - €12,95
    €12,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €12,95 - €12,95
    €12,95
    €12,95 - €12,95
    €12,95

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

    View full details
    €12,95 - €12,95
    €12,95
    €12,95 - €12,95
    €12,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €13,95 - €13,95
    €13,95
    €13,95 - €13,95
    €13,95

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

    View full details
    €13,95 - €13,95
    €13,95
    €13,95 - €13,95
    €13,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €9,95 - €9,95
    €9,95
    €9,95 - €9,95
    €9,95

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

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster K2BLV is a brass 1/4" plug from the ISO-B S...

    View full details
    €9,95 - €9,95
    €9,95
    €9,95 - €9,95
    €9,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €8,95 - €8,95
    €8,95
    €8,95 - €8,95
    €8,95

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

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster K2S is a plated steel 1/4" plug from the IS...

    View full details
    €8,95 - €8,95
    €8,95
    €8,95 - €8,95
    €8,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €10,95 - €10,95
    €10,95
    €10,95 - €10,95
    €10,95

    Foster K2S-101, 1/4" ISO-B Hydraulic Plug x 1/4" 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 K2S-101 is a plated steel 1/4" plug from th...

    View full details
    €10,95 - €10,95
    €10,95
    €10,95 - €10,95
    €10,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €10,95 - €10,95
    €10,95
    €10,95 - €10,95
    €10,95

    Foster K2S-103, 1/4" ISO-B Hydraulic Plug x 1/4" 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 K2S-103 is a plated steel 1/4" plug from th...

    View full details
    €10,95 - €10,95
    €10,95
    €10,95 - €10,95
    €10,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €10,95 - €10,95
    €10,95
    €10,95 - €10,95
    €10,95

    Foster K2S-104, 1/4" ISO-B Hydraulic Plug x 1/4" 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 K2S-104 is a plated steel 1/4" plug from th...

    View full details
    €10,95 - €10,95
    €10,95
    €10,95 - €10,95
    €10,95
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    €17,95 - €17,95
    €17,95
    €17,95 - €17,95
    €17,95

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

    View full details
    €17,95 - €17,95
    €17,95
    €17,95 - €17,95
    €17,95
  • 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 K2S/S-101, 1/4" ISO-B Hydraulic Plug x 1/4" 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 K2S/S-101 is a 303 stainless steel 1/4" plu...

    View full details
    €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
    €20,95 - €20,95
    €20,95
    €20,95 - €20,95
    €20,95

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

    View full details
    €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
    €20,95 - €20,95
    €20,95
    €20,95 - €20,95
    €20,95

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

    In stock

    Reliable, leak-free hydraulic connections built to the most widely used industrial standard. The Foster K2S/S-104 is a 303 stainless steel 1/4" plu...

    View full details
    €20,95 - €20,95
    €20,95
    €20,95 - €20,95
    €20,95