

The Extra-Heavy Flare Nut (part number HNS4-6) is a robust connector designed for 3/8" SAE tubes with a 7/8" hex. This nut is built to support heavy-duty applications and is compatible with R53-018 models. Crafted for use with copper, brass, aluminum, steel, and plastic tubes, it ensures a secure and tight fit for optimum performance. Easy to install, it can be completed in under 10 minutes with common tools.