TM  10-3930-657-24P 3. Explanation of Columns (Sections II and Ill) (Con’t). (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 equipments 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 Ill. 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 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 the quantity may vary from application to application. 4. Emanation 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 c o n s i s t s    o f the last nine d i g i t s     o f the N S N    ( i . e . , N SN 5305-01-674-1467   ).  When  using  this  column  to  locate  an  item,  ignore  the  first  4  digits  of  the  NSN.  Howev- NIIN er, the complete NSN should be used when ordering items by stock number. (2) FIG. 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 Ill. (3) ITEM 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 O 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. (3)  STOCK  NUMBER  column.  This  column  lists  the  NSN  for  the  associated  part  number  and manufacturer identified in the PART NUMBER and CAGEC columns to the left. (4)  FIG.  column.  This  column  lists  the  number  of  the  figure  where  the  item  is  identified/located  in Section II and Section Ill. (5) ITEM column. The item number is that number assigned to the item as it appears in the figure referenced in the adjacent figure number column. 5 Change 1