This self-locking hex nut with a nylon insert features a built-in locking mechanism that helps prevent it from loosening due to vibration or mechanical stress. Manufactured to ISO 10512 standards, the nut is made of steel with an electro-galvanized finish, making it well-suited for indoor use or environments with minimal exposure to the elements. Rated at strength class 10, it pairs perfectly with bolts and screws of property class 10.9 or lower. The nut features a metric fine thread.