... > SECTION XV - BASE METALS AND ARTICLES OF BASE METAL > CHAPTER 73 - ARTICLES OF IRON OR STEEL > 7318 Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel > Threaded articles > Other screws and bolts, whether or not with their nuts or washers > Other > With heads