Section 15 BASE METALS AND ARTICLES OF BASE METAL 74 COPPER AND ARTICLES THEREOF 74 15 SCREWS, BOLTS, NUTS, SCREW HOOKS, RIVETS, COTTERS, COTTER-PINS, WASHERS, 74 15 29 OTHER ARTICLES, NOT THREADED, OF COPPER Commodity Code Description 74 15 29 00 OTHER ARTICLES, NOT THREADED, OF COPPER