Smc Pneumatics KQ2H04-M5A Push-to-connect Fitting M5

Product Description

The SMC PNEUMATICS KQ2H04-M5A is a push-to-connect tube fitting in a straight connector configuration, designed for use in pneumatic plumbing systems. It accepts tubing with a 4 mm outside diameter and connects to an M5 x 0.8 threaded port. The body is constructed from brass with a polybutylene collet, rated for a maximum working pressure of 145 psi. This fitting is installed by licensed pipefitters, pneumatic system technicians, and automation maintenance professionals working on compressed air circuits and related fluid conveyance lines.

The KQ2H04-M5A is suited for pneumatic control systems in both light industrial and commercial applications. It is used wherever a compact M5-ported component - such as a solenoid valve, flow control, or manifold - requires a secure push-in tube connection without additional tooling. The fitting operates across a temperature range of 23 degrees F to 140 degrees F, making it appropriate for standard indoor pneumatic environments.

Key Features

• Push-to-connect design allows fast, tool-free tube insertion and secure retention
• M5 x 0.8 male thread for direct connection to M5-ported pneumatic components
• Rated to 145 psi maximum working pressure
• Brass body construction for durability and corrosion resistance in pneumatic service
• RoHS compliant - suitable for use in environmentally regulated applications
• Compact overall length of 17.70 mm supports tight-clearance installations

Compatibility

Designed as a replacement or expansion fitting for pneumatic systems using 4 mm outside diameter tubing and M5 x 0.8 threaded ports, consistent with SMC KQ2 series push-to-connect fitting standards.

Installation Notes

Installation is performed by pneumatic or mechanical technicians. Depressurize the system fully and verify zero pressure before removing or installing fittings. Ensure the tube end is cut cleanly and squarely before inserting into the collet to achieve a proper seal. Thread engagement should be hand-tight plus a controlled number of turns per the fitting manufacturer's guidance - do not overtighten brass threads into soft-ported bodies.