This low-profile hex nut, manufactured to DIN 936 specifications, is made from plain steel with no coating or surface treatment. While the material itself is strong, it offers little inherent protection against corrosion. The nut has a hardness class of 14H, meaning it meets a minimum hardness of 140 HV; no proof load is specified for this class. It features a left-hand (LH) thread, typically used on components that rotate clockwise to prevent loosening. The thread type is metric fine (MF).