GI hexagonal coupling nuts, also known as galvanized iron hex coupling nuts, are threaded fasteners designed to connect two threaded rods or studs together. These nuts feature a hexagonal shape, allowing them to be easily tightened or loosened using a wrench or spanner. They are made from galvanized iron, a type of steel coated with zinc for enhanced corrosion resistance. The galvanized coating provides protection against rust and ensures durability, making them suitable for use in various environments, including outdoor and industrial settings. The hexagonal shape of the coupling nuts allows for a secure grip and easy installation, facilitating the joining of threaded components. They are commonly used in construction, machinery, and other applications where threaded rods need to be connected or extended. GI hexagonal coupling nuts are available in different sizes and thread patterns, allowing for compatibility with various threaded rods and studs. Their reliability, strength, and resistance to corrosion make them a preferred choice for secure and long-lasting connections in structural and mechanical assemblies.