AN Weld-on Bungs Male Thread - Aluminum

6061 Aluminum CNC machined Weld-on bungs. Male AN threading from 4AN to 20 AN

Build high-performance connections with our Aluminum AN Weld-On Bungs (Male Thread). Designed for professional fabricators and performance builders, these bungs provide a precise, durable connection for fuel, oil, and coolant systems.

Each bung is CNC-machined from high-grade aluminum for clean welding and accurate thread engagement. Featuring male AN threads built to the Army–Navy (AN) standard, they ensure a secure, leak-free seal without the need for thread sealant — ideal for high-pressure automotive and racing applications.

Perfect for welding to aluminum tanks, manifolds, or tubing, these weld-on bungs deliver strength, corrosion resistance, and a professional finish. Available in multiple AN sizes to match your specific fittings and hose ends.