id definition 2 Dun's SIC 2+2, Dun & Bradstreet 3 Empty Non-hazardous Last Contained (HMRC) Code A Harmonized Tariff Schedule of the United States Annotated B U.S. Foreign Trade Schedule B, Statistical Classification of Domestic and Foreign Commodities Exported from the United States C Canadian Freight Classification D Department of Defense Unique Codes E Coordinated Motor Freight Classification F National Stock Number G Canadian Wheat Board, Grain Code for Terminal Elevator Accounting H Brussels Nomenclature I Milstamp AITC or Water Commodity Code J Harmonized System-Based Schedule B K Federal Supply Classification L Last Contained Contents STCC M Dun & Bradstreet Standard Product and Service Code N National Motor Freight Classification (NMFC) P Bulk Petroleum Codes Q Quota Category S Standard International Trade Classification (SITC) T Standard Transportation Commodity Code (STCC) U Uniform Freight Classification (UFC) V Standard Industrial Classification (SIC) Code Z Mutually defined