Coupling Nuts

Coupling nuts are elongated internally threaded nuts used for joining two male-threaded fasteners, usually threaded all thread rods, in a variety of applications where extending the length or attaching like items is required. The outside of a coupling nut is usually hex shaped so that a wrench can tighten or loosen it.

Coupling nuts are available in different grades and finishes based on the mechanical and chemical properties of the material, and the intended application of the coupling nut.