Reference Number The reference numbers (also known as part numbers) are numbers, other than activity stock numbers, used to identify an item of production. Commercial and Government Entity Code The Commercial And Government Entity (CAGE) code was formerly known as Federal Supply Code For Manufacturers FSCM Item Standardization Code The Item Standardization Code (ISC) is a single alpha or numeric character reflecting the standardization decision of a standardization organizational entity. The coding structure provides a means to categorize items as either authorized for procurement or not authorized for procurement. Reference Number Variation Code The Reference Number Variation Code (RNVC) is a single-character code that is used to explain how a reference number describes an item. Reference Number Category Code The Reference Number Category Code (RNCC) designates the relationship of a reference number to the item of supply. Service/Agency Designator Code The Service/Agency Designator Code (SADC) is a single alpha code. It designates the service/agency that accepted the NSN as a substitute for the NSN assigned to the original reference number. Description Availability Code The Description Availability (DA) code indicates if description is available or not available. An “N” in this column means no description is available. An “R” means the item contains limited rights data. In looking up a reference number, ensure that the CAGE code matches with the required material. Other information that helps to identify the material is the item name and description. You can get this basic information from the customer before starting the research. Search capability of the FED LOG CD-ROM includes combinations of reference/part number with CAGE, supplier name, or item name. This option will help you identify the correct material. GENERAL SERVICES ADMINISTRATION FEDERAL SUPPLY CATALOG The General Services Administration (GSA) Federal Supply Catalog lists approximately 20,000 line items that are stocked in GSA supply distribution facilities. The items listed in this catalog are assigned cognizance 9Q. The GSA Federal Supply Catalog serves as the major merchandising instrument of the Federal Supply Service (FSS) Stock Program and consists of a guide and four commodity catalogs. . The GSA Supply Catalog Guide contains consolidated alphabetical and NSN indexes to all stock items. These are items listed in the four commodity catalogs and other items available through the FSS program. It provides detailed information concerning the program and requisitioning procedures. . The GSA Supply Catalog (Tools) contains listings of common and special use tools. It includes alphabetical and numerical indexes and a price list. l The GSA Supply Catalog (Office Products) lists a wide variety of items for office use, including paper supplies, standard and optional forms, and many items of equipment. It includes alphabetical and numerical indexes and a price list. l The GSA Supply Catalog (Industrial Products) contains descriptive listings of a broad range of items, such as hardware, paints, adhesives, and cleaning equipment and supplies. It includes alphabetical and numerical indexes and a price list. . The GSA Supply Catalog (Furniture) provides a single source of information for all furniture items stocked by the FSS. Activities desiring these catalogs should submit an FSS Publication Mailing List Applicatior, GSA Form 457. Before processing requisitions for submission to GSA, you should refer to the ILs or ML-N for supply management data. AFLOAT SHOPPING GUIDE The Afloat Shopping Guide (ASG) is designed to assist the fleet in identifying the NSN items that are most frequently requested by ships. The ASG is a part of the Naval Logistics Library (NLL) that is distributed in CD-ROM format. 3-13