SECTION XV - BASE METALS AND ARTICLES OF BASE METAL > CHAPTER 74 - COPPER AND ARTICLES THEREOF > 7415 Nails, tacks, drawing pins, staples (other than those of heading 8305) and similar articles, of copper or of iron or steel with heads of copper; screws, bolts, nuts, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of copper > Other articles, not threaded > Washers (including spring washers)