149959 - Miller Brass Hose Fitting, 3/16 Barb to .312-24 Male Thread

Restore Your Welder's Performance with the Miller 149959 Fitting

When a gas leak or a broken coolant line brings your welding operation to a halt, having the right small parts makes all the difference. The Miller 149959 Fitting is a genuine replacement part designed to get your machine back up and running quickly. This isn't just a generic hardware store fitting; it is the specific brass connector used inside many Miller welders to route shielding gas or water coolant. If you are noticing a hiss inside your wire feeder or a drip near your machine's connections, a cracked or worn fitting like this could be the culprit.

This fitting connects standard 3/16-inch rubber or vinyl tubing to a threaded port. The barbed end slides into your hose, providing a snug grip that prevents leaks—just add a small hose clamp for a permanent fix. The threaded end is a specific .312-24 size (often called 5/16-24), which is common in welding equipment but hard to find in standard plumbing aisles. Because it is made of solid brass, it won't rust or crack easily, giving you a long-lasting repair that stands up to the heat and vibration of a busy shop environment.

Don't risk stripping the threads on your expensive welding machine by forcing in the wrong part. This OEM Miller fitting guarantees a perfect fit for the intended port. It is ideal for repairing internal gas lines, solenoid connections, or water cooler lines. Keep a few of these in your maintenance kit to ensure that a small broken part doesn't turn into a day of lost production. Simple, reliable, and built to fit—this is the part you need for a professional repair.