Mechanically, this Order (made under s.269P of the Customs Act 1901) declares that "STACKING BOLTS, having female threaded heads" (tariff classification 7318.15.00) are goods to which item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995 applies, effective 28 May 2010; it remains in force until revoked under ss.269SC or 269SD. This affects importers and the customs administration because it changes which Schedule 4 tariff treatment applies to those bolts, altering import costs and compliance obligations.