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Global industrial sourcing · Houston, Texas info@mropartsrfq.com
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Festo
531638
Quick coupling socket KD4-1/2-I
The Festo 531638 is an industrial component featuring a 7.2 mm nominal width, an internal thread G1/2 pneumatic connection 1, and an operating pressure ranging from -0.095 MPa to 1.2 MPa across a temperature range of -10 °C to 60 °C. Constructed with a nickel-plated brass housing, threaded coupling, and inner raceway, it incorporates NBR seals, high-alloy stainless steel spring and circlip components, and accommodates compressed air operating media with normalized normal flow rates from 257 l/min to 1332 l/min. This RoHS compliant part weighs 86 g, maintains a nominal tightening torque of 32.5 Nm with a ±20% tolerance, and supports lubricated operation with a CRC 1 corrosion resistance rating. Submit the exact part number, quantity, and application requirements to request a quote.
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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
- 531638
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 531638.
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
- 7.2 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)
- 257 l/min...1332 l/min
- Nominal ow rate standardized according to ISO 8778
- 278.6 l/min...1443.9 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
- 32.5 Nm
- Tolerance for nominal tightening torque
- ±20%
- Product weight
- 86 g
- Pneumatic connection 1
- Internal thread G1/2
- 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
- Inner raceway material
- Brass
- Circlip material
- high-alloy stainless steel
- Material of pins
- high-alloy stainless steel
- Valve body material
- Brass
- Material releasing sleeve
- PP
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 531638. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.