This all-metal self-locking hex nut, also known as a lock nut, features a built-in locking mechanism that helps prevent loosening caused by vibration or mechanical stress. Manufactured to DIN 6925 and ISO 7042 standards and rated at strength class 8, it's compatible with bolts and screws of property class 8.8 or lower. The nut has metric threads and is made from steel with an electro-galvanized zinc finish, making it ideal for indoor applications or environments with minimal exposure to the elements.