6258

Name: Festo 6258 Quick connector CK-1/4-PK-9-KU
Brand: Festo

Quick connector CK-1/4-PK-9-KU

This Festo industrial component, part number 6258, is a straight-design fitting featuring an external thread G1/4 on connection 1 and a barbed fitting for a 9 mm inside diameter with a nut on connection 2. Fabricated with a POM screwed plug and union nut utilizing a sealing edge, the unit accommodates any mounting position and operates within a pressure range of -0.095 MPa to 1 MPa for compressed air and up to 0.6 MPa for water at a maximum of 50 °C. The assembly supports lubricated operation across an ambient temperature range of -10 °C to 60 °C and requires a nominal tightening torque of 5.5 Nm with a ±20% tolerance. Submit the exact part number, quantity, and application requirements to receive a formal quotation for this 10-pack of RoHS-compliant components.

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Manufacturer: Festo
Part number: 6258
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Technical Specifications

Nominal width: 7.3 mm
Type of seal on screwed plug: Sealing edge
Mounting position: Any
Design: Straight design
Pack size: 10
Operating pressure for entire temperature range: -0.095 MPa...1 MPa | -0.95 bar...10 bar | -13.775 psi...145 psi
Information on operating pressure: Water: max. 0.6 MPa at max. 50 °C
Operating medium: Compressed air as per ISO 8573-1:2010 [7:-:-] | Water (liquid, ice-free)
Information on operating and pilot media: Lubricated operation possible
LABS (PWIS) conformity: VDMA24364-B1/B2-L
Ambient temperature: -10 °C...60 °C
Nominal tightening torque: 5.5 Nm
Tolerance for nominal tightening torque: ±20%
Pneumatic connection 1: External thread G1/4
Pneumatic connection 2: for barbed tting, inside diameter 9 mm, with nut
Material of union nut: POM
Material of screwed plug: POM
Note on materials: RoHS compliant

Engineering context

Identification and RFQ Guidance

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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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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 6258. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.