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Festo
531628
Quick coupling socket KD3-1/4-I
The Festo 531628 is an industrial component featuring a 5 mm nominal width, G1/4 internal thread pneumatic connection 1, and an operating pressure range of -0.095 MPa to 1.2 MPa (-0.95 bar to 12 bar / -13.775 psi to 174 psi). Constructed with a nickel-plated brass housing and threaded coupling, NBR seals, and high-alloy stainless steel spring, ball, and circlip materials, this RoHS-compliant part supports compressed air operating medium per ISO 8573-1:2010 [7:-:-] with a normal nominal flow rate of 185 l/min to 666 l/min (200.5 l/min to 721.9 l/min standardized to ISO 8778). It operates within an ambient temperature range of -10 °C to 60 °C, exhibits a product weight of 47 g, and requires a nominal tightening torque of 9.5 Nm with a ±15% tolerance. Submit the exact part number, quantity, and application requirements to receive a quote.
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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
- 531628
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 531628.
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
- 5 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)
- 185 l/min...666 l/min
- Nominal ow rate standardized according to ISO 8778
- 200.5 l/min...721.9 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
- 47 g
- Pneumatic connection 1
- Internal thread G1/4
- Note on materials
- RoHS compliant
- Seals material
- NBR
- Material of spring
- high-alloy stainless steel
- Housing material
- Brass, nickel-plated
- Threaded coupling material
- Brass, nickel-plated
- Ball material
- high-alloy stainless steel
- Circlip material
- high-alloy stainless steel
- Valve body material
- Brass
- Material releasing sleeve
- 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 531628. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.