73181500 under HS Code 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, 76042990 under HS Code ALUMINIUM BARS, RODS AND PROFILES - OF ALUMINIUM ALLOYS : OTHER : OTHER, and 76042930 under HS Code ALUMINIUM BARS, RODS AND PROFILES - OF ALUMINIUM ALLOYS : OTHER : BARS AND RODS, OTHER THAN WIRE RODS were the top imported HS Codes by SMITH INDUSTRIAL CORPORATION PRIVATE LIMITED in 2021.