SECTION I TM 9-2520-238-34P 6 (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 with all serial numbers of the same model, the effective serial numbers are shown on the last line(s) of the description (before UOC). Not applicable. (7) The usable on code, when applicable (see paragraph 5, Special Information). (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 basis of issue, the total authorization is increased proportionately. (9) The statement “END OF FIGURE”  appears  just  below  the  last  item  description  in  Column  5  for  a given figure in both Section II and Section III. f. QTY (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 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 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 nine digits of the NSN.             NSN               5305-01-674-1467 NIIN When using this column to locate an item, ignore the first 4 digits of the NSN. However, the complete NSN should be used when ordering items by stock number. (2)   FIGURE   NUMBER   column.   This   column   lists   the   number   of   the   figure   where   the   item   is identified/located. The figures are in numerical order in Section II and Section III. (3) ITEM NUMBER column. The item number identifies the item associated with the figure listed in the adjacent FIG. column. This item is also identified by the NSN listed on the same line. b.   PART   NUMBER   INDEX.   Part   numbers   in   this   index   are   listed   by   part   number   in   ascending alphanumeric  sequence  (i.e.,  vertical  arrangement  of  letter  and  number  combination  which  places  the  first letter or digit of each group in order A through Z, followed by the numbers 0 through 9 and  each following letter or digit in like order.) (1)   CAGEC   column.   The   Commercial   and   Government   Entity   (CAGE)   Code   (C)   is   a   5-digit alphanumeric code used to identify the manufacturer,  distributor  or Government agency, etc., that supplies the item. (2) PART NUMBER column. Indicates the primary number used by the manufacturer (individual,  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.