This all-metal self-locking hex 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, it's rated at strength class 8, making it compatible with bolts and screws of grade 8.8 or lower. Made from steel with an electro-galvanized finish, it's designed for indoor use or applications with minimal environmental exposure. The nut comes with a metric fine thread.