Galvanized Nut Bolt, Size: 6 mm To 20 mm

Galvanized steel is coated with a thin layer of zinc. The zinc coating protects the steel beneath it from rust. It's used to make nuts, bolts, screws, and nails resistant to degradation when they are exposed to the weather. Galvanized steel stands up to water well — as long as it's not salt water. Welders who work with structural steel can work with galvanized steel, although they will need protection against breathing the fumes.