National Hardware 5/8 in.-11 Coupling Nut

The National Hardware 5/8 in.-11 Coupling Nut is engineered to provide a reliable, heavy-duty connection between two threaded rods. Manufactured from high-strength steel, this coupling nut delivers dependable performance and structural support across a wide variety of construction, framing, and hardware applications. Featuring a protective zinc finish, this fastener provides enhanced resistance to corrosion and wear for long-lasting durability. Its precision-engineered UNC threading ensures smooth engagement and a tight, secure hold when fastening threaded rod assemblies.