Coupling nuts

Coupling nuts are available in Hot-Dipped Galvanized (HDG), Stainless Steel (SS) 18-8, and Zinc. These fasteners have a cylindrical body, a fully threaded interior, and open ends on each side, designed to join two externally threaded fasteners end to end.

Also known as “extension nuts” or “rod coupling nuts,” these fasteners are used to connect two bolts, threaded rods, or studs in a straight line, effectively extending their combined length. Their elongated hex or cylindrical body allows for easy tightening with standard wrenches and sockets, making them a reliable choice for hanging rod assemblies, structural extensions, and length adjustments in threaded systems.