TM 5-2420-222-20P 4.  Explanation of Columns (Section IV). a. NATIONAL STOCK NUMBER (NSN) INDEX. (1) STOCKNUMBER   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 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. PARTNUMBER  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 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 CAGE columns to the left (4) FIG.        column.        This    column    lists    the number of the figure where the item is identified/located in Sections 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) CAGE    column.        The    Commercial    and Government   Entity   (CAGE)   is   a   5-digit   numeric   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. This manual covers end items purchased under two   contracts.      One   contract   covers   serial   numbers 235786 through 235999; the other contract covers serial numbers  319995  through  342573.    Although  the  model number   remains   the   same,   there   are    minor    design changes   in   the   end   Items.      Check   the   maintenance manuals for the location of the serial numbers. WARNING Installation   of   wrong   part   numbers may  result  in  injury  to  personnel  or damage to equipment. b. US4BLE    ON    CODE.        The    usable    on    code appears in the lower left corner of the description column heading.  Not Applicable. c. FABRICATION  INSTRUPCTIONS.    Bulk  mater- ials required to manufacture Items are listed in the  Bulk Material Functional Group of this RPSTL.  Part numbers for bulk materials are also referenced in the Description column    of    the    line    item    entry    for    the    item    to    be manufactured/fabricated. Detailed fabrication Instructions  for  items  source  coded  to  be  manufactured or fabricated are found in TM 5-2420-222-20. d. ASSEMBLY INSTRUCTIONS. Detailed assembly   instructions   for   items   source   coded   to   be assembled from component spare/repair parts are found in TM 5-2420-222-20.  Items that make up the assembly are listed immediately following the assembly  item  entry or reference is made to an applicable figure. e. KITS.      Line   item   entries   for   repair   parts   kits appear In group 9401 In Section II.  Not Applicable. 4