#6 Male Weld Fitting

The #6 Male Weld Fitting is a precision aluminum bung designed for permanent high-pressure fluid system installations where reliability and durability are non-negotiable. Built for hydraulic lines, fuel systems, and coolant circuits, this weld-on connector provides a robust alternative to threaded fittings in applications requiring maximum vibration resistance and zero-leak integrity. Technicians and fabricators rely on weld fittings when system pressure, temperature cycling, or vibration environments make conventional connectors inadequate.

Manufactured from aluminum in its natural finish, the #6 Male Weld Fitting accepts AN-standard hose and tubing through a male port sized to AN6 specification (3/8-inch nominal diameter). The weld-on design—rather than bolt-on or threaded—eliminates potential leak paths at connection points by creating a monolithic joint with the parent material. This construction method is particularly effective in motorsports, aerospace, and industrial hydraulic applications where system integrity cannot be compromised. The compact form factor (2.7 x 1.2 x 3.95 inches, weighing just 0.05 lbs) ensures minimal obstruction in tight engine bays or equipment enclosures.

Custom fabricators, race teams, and OEM manufacturers benefit most from this fitting when building or repairing closed-loop fluid systems that demand permanent, maintenance-free connections. Installation requires proper TIG or MIG welding technique to the base material; the aluminum construction demands skilled welding to avoid brittleness or porosity. This fitting is ideal for fuel delivery systems, turbo coolant lines, transmission coolers, and any application where the hose or tube must enter a welded assembly. Verify system pressure rating and material compatibility with your specific hydraulic fluid or coolant before final installation.