Pro-source 2557503965PRO Push-to-connect Fitting M5 5-pack

Product Description

The PRO-SOURCE 2557503965PRO is a push-to-connect tube-to-metric-thread fitting designed for fast, tool-free tube connections in compressed air and water systems. The body is nickel-plated brass, which provides corrosion resistance and durability in moderate-pressure pneumatic and fluid-handling lines. A Buna-N O-ring delivers a reliable seal across a range of temperatures and media. Rated to 250 psi, this fitting suits the working pressures common in shop air, light industrial, and fluid distribution applications. It accepts a 3.00 mm outside-diameter tube and terminates with an M5 metric thread. Each package contains 5 fittings, making it practical for multi-point installations or service stock replenishment.

This fitting is suited for residential, commercial, and light industrial pneumatic or water distribution lines where M5 metric threaded ports are present. Typical applications include compressed air manifolds, instrumentation lines, OEM equipment assemblies, and low-flow water circuits. The push-to-connect design speeds up installation and simplifies future serviceability by allowing tube removal without special tooling. It is commonly installed by industrial maintenance technicians, plumbers, and HVAC or refrigeration service professionals working with metric-threaded equipment.

Key Features

• Push-to-connect design allows fast, tool-free tube insertion and release
• Nickel-plated brass construction resists corrosion in air and water service
• Rated to 250 psi working pressure for reliable performance in pneumatic and fluid lines
• Buna-N O-ring provides a durable, leak-resistant seal
• Accepts 3.00 mm outside-diameter tubing with M5 metric thread port connection
• Sold in a pack of 5 for multi-point installations or service inventory

Compatibility

Designed for use with compressed air and water systems requiring a 3.00 mm outside-diameter tube and an M5 metric thread port. Verify thread size and tube OD before installation.

Installation Notes

Depressurize and drain the system completely before removing or installing any fittings. Thread the M5 male end into the port by hand first, then tighten with an appropriate wrench to avoid cross-threading or over-torquing the brass body. Insert the tube fully into the push-to-connect end until it seats; confirm a secure connection by applying light tension to the tube. Follow applicable codes and equipment manufacturer guidelines for maximum allowable pressure and media compatibility.