The disclosure relates to a corrosion resistant article comprising a metal
body and a protective coating applied on at least one surface of said
metal body, said protective coating comprising: (a) a zinc layer
comprising metallic zinc; (b) a silicate layer comprising at least one
silicate; and (c) a lubricant layer comprising at least one lubricant
such as, for example, polyethylene wax. In particular, the disclosure
relates to a corrosion resistant bolt and/or nut having a protective
coating for use in motor vehicles. The protective coating is
substantially free of chromates and phosphates and, hence,
environmentally acceptable. The article has an excellent coefficient of
friction, temperature resistance and anti-corrosion properties.