Uruguay Imports of screws, bolts, nuts, coach screws, screw hocks, rivets, of iron or steel from Tonga was US$5 during 2016, according to the United Nations COMTRADE database on international trade. Uruguay Imports of screws, bolts, nuts, coach screws, screw hocks, rivets, of iron or steel from Tonga - data, historical chart and statistics - was last updated on May of 2024.