GIR 1 - THE TERMS OF HEADING 7415: SCREWS, BOLTS, NUTS, SCREW HOOKS, RIVETS, COTTERS, COTTER-PINS, WASHERS (INCLUDING SPRING WASHERS) AND SIMILAR ARTICLES OF COPPER. GIR 6 - THE TERMS OF SUBHEADING 741521: OTHER ARTICLES, NOT THREADED: WASHERS (INCLUDING SPRING WASHERS).