This PAL 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 from spring steel, the nut is standardized to DIN 7967. It comes with a hot-dip galvanized finish, making it the go-to choice for steel structures and outdoor applications where long-lasting protection and minimal maintenance are essential. The nut is threaded with a metric thread.