STAPLES (OTHER THAN THOSE OFHEADING 8305) AND SIMILARARTICLES, OF COPPER OR OF IRON ORSTEEL WITH HEADS OF COPPER;SCREWS, BOLTS, NUTS, SCREW HOOKS,RIVETS, COTTERS, COTTER-PINS,WASHERS (INCLUDING SPRING WASHERS) AND SIMILAR ARTICLES, OF COPPERNails and tacks, drawing pins, staples and similar articles.