Threaded rod, also known as threaded bar, threaded studding or screw rod, is a common fastener type. It is used much the same way as a very long, thick bolt or screw. Screwed rod threading might run the full length of the stud (all-thread), or partway along from both ends.

The threading allows for bolts and other types of fixings to be fastened onto the rod to suit many different construction applications. Threaded rod is commonly used to connect two objects together, such as wood or metal, or to provide a connection between concrete and another material.