TM10-4930-248-13&P d. PART NUMBER (Column (4)).    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, specification standards, and specification requirements to   identify an   item or   range of  items. NOTE When you    use   an   NSN to  requisition an    item, the item you   receive may    have a different part number from    the    part ordered. e. DESCRIPTION AND    USABLE ON   CODE (UOQ (Column (5)).   This    column includes the following information: (1) The   Federal item    name and,    when required, a  minimum description to  identify the   item. (2) Part number of bulk materials are   reference in  this    column in   the   line    entry to  be manufactured/fabricated. (3) 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 III. 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   may    vary from    application to  application. C-4. EXPLANATION OF   COLUMNS (SECTION IV). -71 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, i.e.. NSN 4930-01-XXX-XXXX NIIN When using this column to   locate an   item, ignore the    first four    digits of  the    NSN. Use    the    complete NSN (13 digits) when requisitioning 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). C-5