TM 10-3930-235-24P 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 NSN digits of the NSN (i.e., 5305-01-674-1467).  When NIIN 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 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 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. 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) 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. (3) STOCK NUMBER column. This column lists the NSN for the item. (4) 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. (5) 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. 5. Special Information. a. USABLE  ON  CODE.    The  usable  on  code appears in the lower left corner of the Description column heading.  Usable on codes are shown as "UOC: ........" in the   Description   column   (justified   left)   on   the   first   line following applicable item description/nomenclature. Uncoded items are applicable to all models. Identification of the usable on codes used In the RPSTL are: 4