ARMY TM 9-2815-257-24P AIR FORCE TO 38G1-128-4 MARINE CORPS TM 10155A/2815-24P/4 5 c. CAGEC (Column (3)).  The Commercial and Government Entity Code (CAGEC) is a 5-digit numeric code which is used to identify the manufacturer, distributor, or government agency, etc., that supplies the item. d. PART  NUMBER  (Column  (4)).    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. NOTE:  When you use a NSN to requisition an item, the item you receive may have a different part number from the part ordered. e. DESCRIPTION AND USABLE ON CODE (UOC) (Column (5)).  This column includes the following information: (1) The Federal item name and, when required, a minimum description to identify the item. (2) Items that are included in kits and sets are listed below the name of the kit or set. (3) Spare/repair parts that make up an assembled item are listed immediately following the assembled item line entry. (4) Part numbers for bulk materials are referenced in this column in the line item entry for the item to be manufactured/fabricated. (5) When the item is not used with all serial numbers of the same model, the effective serial numbers are shown on the last line(s) of the description (before UOC). (6) The UOC, when applicable (see paragraph 5, Special Information). (7) 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 equipments supported exceeds density spread indicated in the BOI, the total authorization is increased proportionately. (8) The statement "END OF FIGURE" appears just below the last item description in Column 5 for a given figure in Section II. f.   OTY (Column (6)).   The QTY (quantity per figure column) indicates the quantity of the item used in the breakout shown on the illustration figure, which is prepared for a functional group, subfunctional group, or an assembly.  A “V” appearing in this column in lieu of a quantity indicates that the quantity is variable and that the quantity may vary from application to application. 4.  EXPLANATION OF COLUMNS (SECTION IV). a. National Stock Number (NSN) Index. (1) STOCK NUMBER Column.  This column lists the NSN by National Item Identification Number (NIIN) sequence.  The NIIN consists of the last nine digits of the NSN.               NSN               ( xxxx – xx - xxx - xxxx )             NIIN