Western Enterprises AW-20 Brass Inert Arc Nipple, 5/16" Hose Barb x 5/8"-18 UNF

Essential Hose Repair Part for MIG and TIG Welders

Don't let a damaged hose stop your production. The Western Enterprises AW-20 Brass Inert Arc Nipple is the perfect solution for welders looking to repair a cut line or build a custom-length hose assembly. Designed to fit 5/16-inch I.D. hoses, this nipple allows you to salvage expensive cable assemblies or tailor your equipment setup to the specific needs of your shop. Whether you are extending your reach with a longer gas line or fixing a leak near the feeder, this simple yet essential part gets you back to welding quickly.

Constructed from solid brass, this nipple is built to withstand the rigors of the welding shop. It resists rust and corrosion, ensuring that your gas flow remains pure and unobstructed. The fitting features a standard B-Size 5/8"-18 UNF thread, which is the industry standard for most regulator outlets and wire feeder gas inlets. This means you can trust it to connect seamlessly with your existing Miller, Lincoln, or ESAB equipment that utilizes standard inert gas fittings.

This versatile nipple isn't just for shielding gas; it is also fully rated for use with water cooler lines. If you are running a water-cooled TIG torch and need to repair a coolant return or supply line, the AW-20 provides a leak-free connection that handles the pressure. Installation is straightforward: simply insert the barbed end into your 5/16" hose and secure it with a crimp ferrule or a high-quality hose clamp. Pair it with a standard B-size nut (sold separately) to complete the connection to your machine or regulator.

Why Choose Brass for Your Hose Repairs?

Plastic fittings can crack under pressure or become brittle over time, leading to unexpected failures. Brass offers the durability needed for high-pressure cylinders (up to 200 PSIG downstream) and the mechanical strength to withstand being dragged across the shop floor. Keep a few of these nipples in your maintenance kit to ensure you are always prepared for unexpected hose repairs.