The end fitting for a polymer post insulator that is hot-dip galvanized is designed to provide a secure and reliable connection between the insulator and the supporting structure, such as a pole or crossarm. The hot-dip galvanizing process involves immersing the fitting in a bath of molten zinc, which forms a protective coating on the surface of the fitting. This coating helps prevent corrosion and extends the lifespan of the fitting in various environmental conditions.