Subheading 8301.40 · Section XV
8301.40 Locks; (other than those for motor vehicles or furniture), (key, combination or electrically operated), of base metal
83 Metal; miscellaneous products of base metal
8301 Padlocks and locks (key, combination, electrically operated) of base metal; clasps and frames with clasps incorporating locks, of base metal, keys for any or the foregoing articles, of base metal
8301.40 (other than those for motor vehicles or furniture), (key, combination or electrically operated), of base metal
Other subheadings under 8301
8301.10 (key, combination or electrically operated), of base metal 8301.20 Of a kind used for motor vehicles (key, combination or electrically operated), of base metal 8301.30 Of a kind used for furniture (key, combination or electrically operated), of base metal 8301.50 Incorporating locks, of base metal 8301.60 Parts of padlocks, locks, clasps and frames with clasps incorporating locks, of base metal 8301.70 Presented separately, of base metal
For Indian shipping bills you need 8 digits. These six-digit codes are the international HS 2022. India's ITC(HS) classification (DGFT) and Customs Tariff (CBIC) add two more digits for the national tariff line, so pick the 8-digit line under your 6-digit code there, and confirm with your customs broker for anything borderline.