0064 00 TM 10-1670-287-23&P Column 3, CAGE Code. The Commercial and Government Entity Code (CAGEC) is a 5-digit numeric  code that is used to identify the manufacturer, distributor, or Government agency that supplies the item.  Column 4, Part Number. Indicates the primary number used by the manufacturer (individual, company,  firm, corporation, or Government activity), which controls the design and characteristics of the item by  means of its engineering drawings, specifications, standards, and inspection requirements to identify an  item or range of items.  When you use an NSN to requisition an item, the item you receive  may have a different part number from the part ordered.  Column 5, Description and Usable on Code (UOC). This column includes the following information:  1.  The Federal item name and, when repaired, a minimum description to identify the item.  2.  The physical security classification of the item is indicated by the parenthetical entry, (insert applicable  physical security classification abbreviation, e.g., Phy Sec CI (C) – Confidential, Phy Sec CI (S)  Secret, Phy Sec CI (T) – Top Secret.  3.  Items that are included in kits and sets are listed below the name of the kit or set.  4.  Spare/repair parts that make up an assembled item are listed immediately following the assembled  item line entry.  5.  Part numbers for bulk materials are referenced in this column in the line item entry for the item to be  manufactured/fabricated. 6.  When the item is not used will all serial numbers of the same model, the effective serial numbers are  shown on the last line(s) of the description (before UOC).  7.  The usable on code, when applicable (see the “SPECIAL INFORMATION” paragraph below).  8.  In the Special Tools List section, the Basis of Issue (BOI) appears as the last line(s) in the entry for  each special tool, special TMDE, and other special support equipment. When density of equipment  supported exceeds density spread indicated in the BOI, the total authorization is increased  proportionately. 0064 00-5  NOTE RECOVERABILITY CODE - Continued  APPLICATION/EXPLANATION - Continued  L -  Repairable item. Condemnation and disposal  not authorized below Specialized Repair Activity  (SRA). A -  Item requires special handling or condemnation  procedures because of specific reasons (e.g.,  precious metal content, high dollar value, critical  material or hazardous material). Refer to  appropriate manuals/directives for specific  instructions.