This self-locking hex nut with nylon insert, type NM/NE, is manufactured to ASME B18.16.6 standards and features a built-in locking mechanism that helps prevent loosening caused by vibration or mechanical stress. Made from Grade N5 steel, the nut comes with UNF (Unified National Fine) threads. Its electroplated zinc finish makes it well-suited for indoor use or applications involving very mild exposure conditions.