CK-M5-PK-3 – Quick Connector – Festo Pneumatic Fittings

USD $ 7.14 USD $ 5.85

SKU: Festo 3561

Manufacturer Part Number: Festo 3561
Festo Pneumatic Fittings: CK-M5-PK-3
OEM Spec Ref 

The Festo CK-M5-PK-3, with MPN 3561, is a high-quality Pneumatic Fitting expertly designed to facilitate secure and reliable connections within pneumatic systems. This precision-engineered component is essential for a wide range of industrial applications, ensuring effective and efficient air distribution.

Key Features:

  • Secure Connections: The CK-M5-PK-3 offers robust and leak-proof connections, crucial for maintaining system integrity and functionality in demanding environments.
  • High Compatibility: Designed to be universally compatible with a variety of pneumatic components, this fitting allows for versatile use across different systems.
  • Durable Material: Crafted from superior materials, it stands up to the rigors of industrial use, ensuring long-term reliability and performance.
  • Easy Installation: The design allows for quick and simple installation, reducing downtime and facilitating maintenance and replacements.
  • Compact Design: Its compact size ensures it can be integrated into systems with limited space without compromising performance.


  • Enhanced System Reliability: By providing secure and stable connections, it improves the overall reliability of pneumatic systems, minimizing the risk of downtime.
  • Operational Efficiency: Efficient air distribution achieved through the use of this fitting leads to enhanced performance of pneumatic tools and machinery.
  • Cost-Effective: Reduces the need for frequent maintenance and replacement, thus offering significant cost savings over time.
  • Improved Safety: Ensures a safer working environment by preventing leaks and maintaining stable system pressure.


  • Automated Assembly Lines: Ideal for use in automated production environments where reliability and precision are paramount.
  • Testing Equipment: Suitable for integration into pneumatic testing setups to ensure accurate and consistent results.
  • General Pneumatics: A versatile component applicable to a broad spectrum of pneumatic applications across various industries.

The Festo CK-M5-PK-3 Pneumatic Fitting exemplifies Festo’s commitment to quality and innovation, offering a reliable solution for enhancing the integrity and efficiency of pneumatic systems.

Technical Data

Feature Specification
Nominal width 2 mm
Type of seal on screwed plug Sealing ring
Mounting position Any
Design Straight design
Pack size 10
Operating pressure for entire temperature range -0.095 MPa … 1 MPa
Operating pressure for entire temperature range -0.95 bar … 10 bar
Operating pressure for entire temperature range -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 Operation with oil lubrication 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 1.33 Nm
Tolerance for nominal tightening torque ± 20%
Pneumatic connection 1 External thread M5
Pneumatic connection 2 for pneumatic tubing outside diameter 4 mm
for barbed fitting, inside diameter 3 mm, with nut
Material of union nut Wrought aluminum alloy, anodized
Material of screwed plug Steel, galvanized
Note on materials RoHS-compliant
Sealing ring material NBR
High-alloy stainless steel