Miller CGA 023 B-Size Left-Hand Fuel Gas Nut

Secure Your Oxy-Fuel Setup with Genuine Miller Parts

Every welder knows that a leaky hose isn't just an annoyance—it's a major safety hazard. When you are setting up your oxy-fuel rig or repairing a damaged line, you need fittings you can trust. The Miller 16174 Nut is a standard B-Size fuel gas nut designed to get your equipment back in action safely and reliably. If you've ever dealt with a stripped thread or a rounded-off nut on your regulator or torch, you know how important it is to have fresh, high-quality brass hardware on hand. This nut features the industry-standard 5/8"-18 Left-Hand thread, marked with the tell-tale notches that indicate "fuel gas only," ensuring you never accidentally hook it up to an oxygen port.

This nut is built to take the wear and tear of the shop environment. Made from durable brass, it resists corrosion and stands up to the daily grind of connecting and disconnecting torches. It is designed to work with standard B-size hose nipples (sold separately) to crimp or clamp onto your fuel hose, creating a secure path for your acetylene, propane, or other fuel gases. Whether you are building a custom length hose, replacing a damaged end, or swapping out fittings on a manifold, this Miller nut provides the precise fit you need. The threads are cut cleanly to prevent binding, allowing you to hand-tighten before finishing with a wrench for that perfect seal.

Don't compromise on your gas gear. Using worn-out or mismatched fittings can lead to gas leaks, wasted consumables, and dangerous flashbacks. The Miller 16174 is a small part that plays a big role in your safety protocol. It fits standard regulators, flowmeters, and torch handles that utilize B-size fuel connections. Keep a few of these in your toolbox or parts bin so you are never stuck waiting on a simple fitting when there is metal to be cut or brazed. With Miller's reputation for quality, you can trust that this connection will hold tight, letting you focus on the puddle and the flame, not the fittings.