This all-metal self-locking hex nut is manufactured to DIN 980-V and ISO 7042 standards. Made from grade 8 steel, it's designed for use with bolts and screws of property class 8.8 or lower. The nut features a zinc flake coating that meets ISO 10683 flZnnc 8 specifications and is Cr(VI+)-free, delivering superior corrosion resistance compared to a pure zinc coating of equal thickness—without the risk of hydrogen embrittlement. Threading is metric.