193649 - Miller Gas Fitting, 1/4" Barb to 5/8"-18 Female Adapter

Genuine Miller 193649 Gas Fitting Overview

The Miller 193649 is a high-quality OEM gas fitting designed to facilitate secure connections within welding gas delivery systems. Manufactured by Miller Electric, this component is engineered to meet the precise tolerances required for industrial welding equipment, ensuring a leak-free seal and consistent gas flow. The fitting features a dual-connection design: one end is equipped with a 1/4-inch barb intended for standard gas tubing, while the other end sports a 5/8"-18 Female thread, a standard size for inert gas fittings in the welding industry (often associated with CGA 'B' size connections).

Constructed from durable brass, this fitting is resistant to corrosion and mechanical wear, making it suitable for the harsh environments often found in fabrication shops and field sites. It is commonly utilized as a replacement part for gas inlet assemblies on Miller wire feeders, such as the SuitCase series, and other compatible welding power sources. Proper maintenance of gas connections is critical for weld quality; a damaged or ill-fitting connector can lead to air aspiration, resulting in weld porosity and compromised structural integrity. By choosing the genuine Miller 193649, operators ensure compatibility and reliability.

Technical Specifications

The 1/4" barb is designed to fit snugly inside 1/4-inch internal diameter (ID) gas hoses. For a secure installation, the use of a hose clamp or crimp ferrule over the tubing at the barb site is recommended to prevent detachment under pressure. The 5/8"-18 female thread typically connects to a corresponding male outlet on the machine or a gas coupler. This fitting is rated for standard shielding gases including Argon, CO2, and mixed gases used in MIG and TIG welding processes.

Whether you are repairing a damaged gas line or assembling a custom gas delivery setup for your Miller equipment, this fitting provides the professional-grade connection necessary for optimal performance. Its robust hex-nut design allows for easy tightening with a standard wrench, ensuring a tight seal without stripping threads.