Festo Instant Male Connector QSM-4-M5

Official Festo type reference: QSM-M5-4 (Festo QSM mini-series push-in fitting; Part No. 153304)

The Festo Instant Male Connector QSM-4-M5 is the compact QSM mini-series configuration for connecting 4 mm outside-diameter pneumatic tubing to an M5 male threaded port. The fitting combines a push-in tube connection with an external M5 thread and sealing ring, making it suitable for compact pneumatic valves, manifolds, actuators and control components. Festo's current type designation is QSM-M5-4; the product naming used here follows the common 4-M5 listing convention.

Technical specifications

Key features and benefits

·       Mini-series construction for space-constrained pneumatic assemblies.

·       M5 male thread with sealing arrangement for direct component mounting.

·       4 mm push-in tube connection enables quick tube installation.

·       External hexagon supports controlled tightening.

·       Blue release ring enables straightforward tube removal during service.

Typical applications

·       Compact pneumatic valves

·       Small cylinders and actuators

·       Manifold and distribution blocks

·       Automation sensors and control modules

·       Instrumentation and low-profile pneumatic assemblies

Installation and handling

·       Use clean, correctly sized pneumatic tubing with a square, burr-free cut.

·       Push the tube fully into the fitting until it reaches the internal stop, then perform a gentle pull check.

·       For removal, depress the blue release ring and withdraw the tube carefully.

·       Use the specified thread/sealing arrangement and tighten to the applicable Festo nominal torque; do not overtighten.

Confirm compatibility of the fitting, tubing, pressure, temperature and working medium before commissioning.