TM 9-2815-225-34&P f. Description and Usable on Codes (UOC) (Column (6)).  This column includes the following information: (1) The Federal item name and, when required, a minimum description to identify the item. (2) Items that are included in kits and sets are listed below the name of the kit or set. (3) Spare/repair parts that make up an assembled item are listed immediately following the assembled item line entry. (4) Part  numbers  for  bulk  materials  are  referenced  in  this  column  in  the  line  item  entry  for  the  item  to  be  manufactured/ fabricated. (5) 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). (6) The usable on code, when applicable (refer to paragraph 5, Special Information). (7) 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 equipment supported exceeds density spread indicated in the basis of issue, the total authorization is increased proportionately. (8) The statement END OF FIGURE appears just below the last item description in column 6 for a given figure in both section II and section III. g. QTY  (Column  (7)).    The  Quantity  Incorporated  in  Unit  (QTY  INC  IN  UNIT)  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 place of a quantity indicates that no specific quantity is applicable (e.g., shims, spacers). B-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) NSN sequence.  The NIIN consists of the last nine digits of the NSN (i.e., 5305-01-674-1467).  When using this column              NIIN 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 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, company, 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. B-4