HSN Code: HSN stands for Harmonized System of Nomenclature. HSN was established and industrialized by the WCO (World Customs Organization) in 1988. Since then, five revisions have already been made worldwide. GST HSN code states more than 5000 goods and is primarily practised by more than 150 countries. This 6-digit HSN code can be utilized to classify more than five thousand commodities and is further applied for tax objectives classification.