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 made of steel with a Cr(VI)-free zinc flake coating per ISO 10683, rated for 480 hours NSS, and pre-lubricated. With metric threading and a strength class of 8, this nut is designed to pair with bolts and screws of strength class 8.8 or lower.