The studding with double thread ends is a headless screw designed to hang materials from wooden structures, walls or overhead. One half has a lag thread wood screw with a pointed tip and the other half has standard machine thread with a blunt tip.
Steel Thread Rods are long rods much like the threaded portion of a bolt, but are commonly much larger and do not feature a head. Fully threaded bars are used to join and stabilize structures or objects, often into ceilings or walls.
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