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The SMC PNEUMATICS KQ2H03-U01A is a push-to-connect tube fitting connector designed for quick, tool-free pneumatic line connections. It accepts tubing with a 5/32-inch outside diameter and features a 1/8-inch universal thread for fast inline installation. Constructed from brass with a polybutylene collet body, this fitting handles working pressures up to 145 psi. It is suited for compressed air and inert gas pneumatic circuits in light industrial and automation applications. Licensed technicians and instrumentation mechanics install this type of fitting during panel builds, machine assembly, and field service work.
This fitting is used in pneumatic control and distribution systems where quick tube insertion and secure retention are required without additional tools. Its compact form factor makes it a practical choice for tight control enclosures, manifold runs, and equipment retrofits in manufacturing and process automation environments. The universal thread designation broadens its range of compatible threaded port types across standard pneumatic components.
Designed as an OEM-style push-to-connect fitting for pneumatic systems using 5/32-inch OD tubing and 1/8-inch threaded ports in light industrial and automation applications.
Installation is performed by instrumentation technicians or pneumatic system assemblers. Depressurize and lock out the pneumatic circuit completely before servicing any fitting. Ensure tubing is cut cleanly and squarely and that the tube end is free of burrs before insertion to guarantee a leak-free seal. Verify thread engagement is correct for the port type before applying system pressure.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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