TM 10-3930-653-14&P 3. Explanation of Columns (Sections II and III) (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 I11. 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. 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  (i.e., NSN 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 III. (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 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. (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 III. (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. Change 1  C-5