Tariff Concession Order 0936713 makes nylon screw-fixing plugs (tariff heading 3926.90.90) eligible for the Schedule 4 concession item 50 from 29 September 2009 until revoked. Importers of these plugs can claim the concession (reducing or removing customs duty); the declaration was made by a delegate of the Chief Executive Officer under s269P of the Customs Act 1901, and the concession can be ended under ss269SC or 269SD. Claiming the benefit requires correct tariff classification and routine customs compliance.