Slovakia Exports of screws, bolts, nuts, coach screws, screw hocks, rivets, of iron or steel to Guinea was US$59 during 2021, according to the United Nations COMTRADE database on international trade. Slovakia Exports of screws, bolts, nuts, coach screws, screw hocks, rivets, of iron or steel to Guinea - data, historical chart and statistics - was last updated on June of 2024.