A threaded rod, also known as a stud, is a relatively long rod that is threaded on both ends. The fully threaded studs have no head, are threaded along their entire length, and have a higher tensile strength. The thread may extend along the complete length of the rod. They are designed to be used in tension. Threaded rod in bar stock form is often called all-thread. These studs are usually fastened with two nuts and used with objects that must be assembled and dissembled quickly.