Confirm the exact configuration
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.
Global industrial sourcing · Houston, Texas info@mropartsrfq.com
Reference imageConfirm configuration by manufacturer part number.
Festo
531677
Quick coupling plug KS4-1/4-A-R
The Festo 531677 is an industrial component featuring an 8 mm nominal width and an external thread G1/4 pneumatic connection 1, constructed with a brass valve body and NBR seals. It operates within a pressure range of -0.095 MPa to 1.2 MPa across an ambient temperature range of -10 °C to 60 °C, delivering a normal nominal flow rate of 765 l/min normalized to DIN 1343 and 829.3 l/min standardized to ISO 8778 with compressed air as per ISO 8573-1:2010 [7:-:-]. This unit weighs 46 g, has a nominal tightening torque of 9.5 Nm with a ±15% tolerance, and achieves a corrosion resistance class of CRC 1 with LABS conformity to VDMA24364-B1/B2-L. Submit the exact part number, quantity, and application requirements for a formal quote.
Request pricing and availabilityCommercial response within one business day for your destination and required quantity.
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
- 531677
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 531677.
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
- 8 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)
- 765 l/min
- Nominal ow rate standardized according to ISO 8778
- 829.3 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
- 46 g
- Pneumatic connection 1
- External thread G1/4
- Note on materials
- RoHS compliant
- Seals material
- NBR
- Material of spring
- high-alloy stainless steel
- Material of threaded seal
- PA66-GF30 / TPE-U
- Information on materials
- Brass
- Valve body material
- Brass
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 531677. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.