Pro-source 2556405665PRO M5 Push-to-connect Tube Fitting 5-pack

Product Description

The PRO-SOURCE 2556405665PRO is a push-to-connect tube fitting designed to join a 5 mm outside diameter tube to an M5 metric thread port. The body is constructed from nickel-plated brass, offering corrosion resistance suitable for compressed air and water service. A Buna-N O-ring provides the primary seal at the threaded end. Rated to 250 psi, this fitting is suited for pneumatic control lines, small-bore fluid circuits, and instrumentation tubing where a fast, tool-free tube connection is required. Licensed plumbers, pipefitters, and pneumatic system technicians are the typical installers.

This fitting is designed for use in compressed air and water systems where an M5 metric thread port meets a 5 mm OD tube. Typical applications include pneumatic control panels, manifold assemblies, small-bore instrumentation lines, and light industrial fluid circuits. The push-to-connect design allows the tube to seat and seal in a single hand motion without ferrules or wrenches, making it well suited for panel builds and field repairs where speed and repeatability matter. Each package contains 5 fittings.

Key Features

• Push-to-connect design accepts 5 mm OD tube with no ferrules or tube prep tools required
• M5 metric thread connection for direct port mounting on manifolds and valve bodies
• Nickel-plated brass body for corrosion resistance in air and water service
• Buna-N O-ring seal rated for compressed air and water media
• 250 psi pressure rating suitable for standard pneumatic control circuits
• Sold in a package of 5 fittings to support panel builds and stocking needs

Compatibility

Designed for use with compressed air and water systems requiring a 5 mm OD tube connection to an M5 metric thread port. Confirm thread pitch and port depth on the receiving component before installation.

Installation Notes

Installation should be performed by a qualified pipefitter, pneumatic technician, or plumber. Depressurize and isolate the system completely before removing or installing any fittings. Verify the receiving port thread is M5 metric and that the tube OD is exactly 5 mm for a proper collet grip and seal. Do not overtighten the threaded end; hand-tight plus a snug quarter-turn with a wrench is typical for O-ring face seal style ports, but follow the equipment manufacturer specifications for the receiving port.