ARMY TM 9-2815-260-24P AIR FORCE TO 38G1-126-4 MARINE CORPS TM 09245A/2815-24P/4 ix 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               ( 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) 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 numbers 0 through 9 and each following letter or digit in like order). (1) CAGEC Column.  The Commercial and Government Entity Code (CAGEC) is a 5-digit numeric 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 FSCM 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 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.