TM    5-2815-241-34&P C-3. EXPLANATION  OF  COLUMNS  (SECTIONS  II  AND  Ill)  -Continued. (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. C-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 c o n s i s t s    o f 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) lTEM  column.  me  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  CAGE  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) lTEM  column.  me  item  number  is  that  number  assigned  to  the  item  as  it  appears  in  the  figure referenced  in  the  adjacent  figure  number  column. c. Figure  and  Item  Number  Index. (1) FIG.   column.  This  column  lists  the  number  of  the  figure  where  the  item  is  identified/located  in Sections  II  and  III. (2) lTEM  column.  me  item  number  is  that  number  assigned  to  the  item  as  it  appears  in  the  figure referenced  in  the  adjacent  figure  number  column. (3) STOCK NUMBER column.  This column lists the NSN for the item. Change  1 C-5