208408 - Miller Brass Barbed Fitting 1/4" Tubing x 5/8-18 Flange Mount

Technical Overview of the Miller 208408 Brass Fitting

The Miller 208408 is a precision-engineered brass fitting designed specifically for use within Miller welding power sources and auxiliary equipment. As a genuine OEM component, it meets the exact dimensional tolerances required for maintaining the integrity of gas or coolant fluid delivery systems. The fitting features a dual-interface design: one end provides a 1/4-inch barbed connection suitable for standard flexible tubing, while the other end utilizes a .625-18 (5/8-18) female thread integrated into a flange mount configuration.

Constructed from high-quality brass, this component offers superior resistance to corrosion and oxidation, which is critical in environments where shielding gases or cooling fluids are present. The barbed section is designed to grip the inner diameter of the tubing securely, often requiring a hose clamp for high-pressure applications, although the barb geometry itself provides significant retention force. The flange mount aspect allows the fitting to be securely bolted or fastened to a machine panel or bulkhead, providing a stationary connection point that isolates the internal plumbing from external physical stress.

Technicians repairing or refurbishing Miller equipment will find this part essential for restoring factory specifications. The .625-18 thread pitch is a standard size in the welding industry, often associated with inert gas fittings, ensuring compatibility with standard hoses and connectors. Proper installation of this fitting is crucial for preventing leaks that could compromise weld quality (in the case of shielding gas) or machine cooling efficiency.