8/14/2009 The tariff classification of threaded foundation rods from China. 11/17/2009 The tariff classification of threaded foundation rods from China. Correction to Ruling Number N071876. 9/5/2017 The tariff classification of drain plug gaskets and well-nuts from Taiwan 8/20/2010 The tariff classification of a union, screw and bolt stud from Japan. 1/22/2020 The tariff classification of steel ground screws from China