Pro-source 2555705665PRO Push-to-connect M5 Metric Fitting

Product Description

The PRO-SOURCE 2555705665PRO is a push-to-connect tube fitting designed to join a 5 mm outside diameter tube to an M5 metric thread port. Constructed from nickel-plated brass, this fitting delivers a rated working pressure of 250 psi and relies on an internal Buna-N O-ring to maintain a leak-free seal under both compressed air and water service. The push-to-connect design allows for fast, tool-free tube insertion and release, reducing labor time in pneumatic and fluid handling assemblies. Each package contains 5 fittings, making it a practical choice for service technicians stocking a van or completing multi-point installations.

This fitting is suited for light industrial and commercial applications involving compressed air lines, pneumatic control circuits, and low-pressure water distribution. It is commonly installed in equipment where space constraints favor a compact M5 threaded port interface paired with small-diameter flexible tubing. Plumbers, HVAC technicians, and pneumatic systems technicians working on compressed air distribution or equipment manifolds will find this fitting straightforward to install and reliable in continuous service.

Key Features

• Push-to-connect design enables tool-free tube insertion and removal
• Nickel-plated brass construction resists corrosion in air and water service
• Buna-N O-ring provides a reliable seal at the tube interface
• Rated to 250 psi working pressure
• Accepts 5 mm outside diameter tubing
• M5 metric thread connection for compact port applications

Compatibility

Designed for use with compressed air and water service lines utilizing 5 mm outside diameter tubing and M5 metric threaded ports.

Installation Notes

Installation does not require special tools — insert the tube fully until it seats against the internal collet to ensure a secure connection. Depressurize and isolate the line before making or breaking any fitting connection. Verify thread engagement is complete and that the tube cut is clean and square before pressurizing. Follow applicable compressed air system codes and equipment manufacturer guidelines for maximum allowable pressure and media compatibility.