Section 15 Base metals and articles of base metal 73 Articles of iron or steel 73 18 Screws, bolts, nuts, coach-screws, screw books... of iron or steel 73 18 23 Having an external diameter not exceeding 16 mm 73 18 23 10 Having an external diameter not exceeding 16 mm Commodity Code Description 73 18 23 10 00 Having an external diameter not exceeding 16 mm
