This self-locking hex nut, also known as a lock nut, features a built-in mechanism that helps prevent it from loosening due to vibration or mechanical stress. Manufactured to ASME B18.16.6 standards, it's made from Grade C steel and comes with a Unified National Fine (UNF) thread. The electrolytically zinc-plated finish makes it well suited for indoor use or applications with minimal environmental exposure.