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Products/Festo/531679
Festo 531679 Quick coupling plug KS4-3/8-I
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Festo

531679

Quick coupling plug KS4-3/8-I

The Festo 531679 is an industrial component featuring a 7.85 mm nominal width, an internal thread G3/8 pneumatic connection 1, and a nickel-plated brass material construction that is RoHS compliant. It operates within a pressure range of -0.095 MPa to 1.2 MPa (-0.95 bar to 12 bar / -13.775 psi to 174 psi) and supports compressed air as per ISO 8573-1:2010 [7:-:-], accommodating lubricated operation with a normal nominal flow rate between 756 l/min and 1350 l/min. Weighing 32 g, the unit has an ambient temperature range of -10 °C to 60 °C, a corrosion resistance class of 1, and requires a nominal tightening torque of 21.5 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
531679
Data verification
Manufacturer evidence reviewed

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Exact part-number verificationTechnical properties are matched to 531679.
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)
756 l/min...1350 l/min
Nominal ow rate standardized according to ISO 8778
819.5 l/min...1463.4 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
21.5 Nm
Tolerance for nominal tightening torque
±15%
Product weight
32 g
Pneumatic connection 1
Internal thread G3/8
Note on materials
RoHS compliant
Information on materials
Brass, nickel-plated

Engineering context

Identification and RFQ Guidance

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.

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 531679. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.