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Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
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Festo
531678
Quick coupling plug KS4-1/4-I
The Festo 531678 is an industrial component featuring a 7.85 mm nominal width, an internal thread G1/4 pneumatic connection 1, and nickel-plated brass material construction with RoHS compliance. This nickel-plated brass part operates across a pressure range of -0.095 MPa to 1.2 MPa (-0.95 bar to 12 bar / -13.775 psi to 174 psi) using compressed air conforming to ISO 8573-1:2010 [7:-:-], supporting both standard and lubricated operation within an ambient temperature of -10 °C to 60 °C. It provides a normal nominal flow rate of 720 l/min to 1161 l/min (normalized to DIN 1343), a standardized flow rate of 780.5 l/min to 1258.5 l/min (to ISO 8778), a nominal tightening torque of 9.5 Nm with a ±15% tolerance, a corrosion resistance class of 1, LABS conformity under VDMA24364-B1/B2-L, and a product weight of 31 g. Submit the exact part number, quantity, and application requirements to receive a formal quotation.
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Request a QuoteWhy no listed price?
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
- Manufacturer
- Festo
- Part number
- 531678
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 531678.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Nominal width
- 7.85 mm
- Operating pressure for entire temperature range
- -0.095 MPa...1.2 MPa | -0.95 bar...12 bar | -13.775 psi...174 psi
- Normal nominal ow rate (normalized to DIN 1343)
- 720 l/min...1161 l/min
- Nominal ow rate standardized according to ISO 8778
- 780.5 l/min...1258.5 l/min
- Operating medium
- Compressed air as per ISO 8573-1:2010 [7:-:-]
- Information on operating and pilot media
- Lubricated operation possible
- Corrosion resistance class (CRC)
- 1 - Low corrosion stress
- LABS (PWIS) conformity
- VDMA24364-B1/B2-L
- Ambient temperature
- -10 °C...60 °C
- Nominal tightening torque
- 9.5 Nm
- Tolerance for nominal tightening torque
- ±15%
- Product weight
- 31 g
- Pneumatic connection 1
- Internal thread G1/4
- Note on materials
- RoHS compliant
- Information on materials
- Brass, nickel-plated
Engineering context
Identification and RFQ Guidance
What to include in your RFQ
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Technical verification
Our sourcing response is prepared against Festo 531678. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.