This Order treats specified chipboard screws (Tariff heading 7318.12.00) — either carbon steel yellow zinc coated or carbon steel class 3 coated — as goods covered by Part III, Schedule 4, Item 50 of the Customs Tariff Act 1995, effective 16 December 2009 until revoked under sections 269SC or 269SD of the Customs Act 1901. Mechanically, a delegate under s269P decides the tariff treatment; importers of qualifying screws receive the tariff outcome in Item 50 and must meet the stated product and classification criteria to claim it.