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This latest edition of AS/NZS 4680 released in June 2025 takes account of the technical changes in ISO 1461 and the American ASTM A123, adopting the concepts of the ISO Standard, while providing a local focus.

Designers wishing to specify fabricated HDG need only reference two Standards: one covering the design and durability of HDG steel (AS/NZS 2312.2), and the other dealing with the manufacturing process and tolerances (AS/NZS 4680). For those designers requiring hot dip galvanized threaded fasteners used in structural applications, AS/NZS 1214 is normally specified.

AS/NZS 2312, Guide to the protection of structural steel against atmospheric corrosion by the use of protective coatings, originated in 1967 as a guide for steel designers who needed advice on methods for the corrosion protection of structural steel.

It was recognised during the last review process that steel designers would benefit by separating the Standard into coating specific sections to avoid confusion. In particular, the relatively simple specification process for hot dip galvanizing (HDG) was often lost in the more complex process of specifying paint systems in the 2002 edition.