Legris 3681 04 19 Male Connector Fitting M5x0.8 435 Psi

Product Description

The LEGRIS 3681 04 19 is a push-to-connect male connector tube fitting designed for quick, tool-free connections between 4mm OD tubing and M5x0.8 male metric threads. Constructed from nickel-plated brass, this fitting handles both liquid and gas service at pressures up to 435 psi and temperatures ranging from -4 degrees F to 302 degrees F. The FKM o-ring provides a reliable seal across a wide range of media. It is sized for compact pneumatic and fluid-control installations where space and connection speed matter. Licensed trades and industrial technicians working with metric pneumatic plumbing are the primary installers.

This fitting is suited for light industrial, pneumatic, and fluid-handling systems that use 4mm OD tubing and M5x0.8 threaded ports. Common applications include pneumatic control panels, automation equipment, compressed air distribution, and small-bore hydraulic or instrumentation lines. Its compact overall length of 16mm makes it well suited for tight panel assemblies or manifold connections where larger fittings will not fit. It is compatible with both gas and liquid media within its rated temperature and pressure range.

Key Features

• Push-to-connect design allows tool-free tube insertion and removal
• Nickel-plated brass body resists corrosion in wet and industrial environments
• Rated to 435 psi maximum working pressure
• Wide service temperature range: -4 degrees F to 302 degrees F
• FKM o-ring seal compatible with a broad range of liquids and gases
• Compliant with RoHS, ATEX, PED, REACH, FDA (21CFR), and ISO 14743 standards

Compatibility

Designed for use with 4mm OD tubing and M5x0.8 male metric threaded ports in pneumatic and fluid-handling systems handling liquid or gas service within the rated pressure and temperature limits.

Installation Notes

Depressurize and de-energize the system completely before installing or removing any push-to-connect fitting. Ensure tubing is cut cleanly and squarely with no burrs before inserting into the fitting to achieve a proper seal. Verify that the tube OD and thread size match the fitting specifications before installation. This fitting type is typically installed by instrumentation technicians, industrial mechanics, or licensed plumbers working under applicable pneumatic or fluid-system codes.