Coupling Nut

Coupling Nut

A coupling nut, also known as an extension nut, is a type of fastener that is used to join two pieces of threaded rod or other male threaded fasteners. Coupling nuts are typically hexagonal in shape, similar to standard nuts, but are longer in length. This extended length allows them to cover and connect two opposite ends of threaded rod or bolts. They are an essential fastener in many industrial, construction, and home applications where the joining of threaded rods or bolts is required.