Column (3) NSN. The National Stock Number (NSN) for the item is listed In this column and used to
requisition the part.
Column (4) CAGE CODE. The Commercial and Government Entity (CAGE) code is a 5character code used
to identify the manufacturer, distributor, or Government agency/activity that supplies the part.
Column (5) PART NUMBER. The part number 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.
When an NSN is used to requisition an item, the item received may have a different part
number than the item listed.
Column (6) DESCRIPTION AND USABLE ON CODE. This column can contain the following information:
The Federal item name and a minimum description to identity the item, if required;
part numbers of bulk materials, referenced to a line entry in which it is used for manufacture or fabrication;
the Useable On Code (UOC) identifies the functional group on which the part is used and appears on last line
of item description.
the statement END OF FIGURE is entered just below the last item description in the column for a given figure.
Column (7) QUANTITY The quantity Indicates the amount of the item used In the breakout shown on the
illustration figure, which Is prepared for a functional group, sub-functional group, or an assembly. A 'V"
appearing in this column Instead of a quantity number Indicates that the quantity is variable and may vary from
application to application.
b. Columns In Section IV. The Cross-Reference Index In Section IV consists of two lists. One list Is the National
Stock Number Index and the other list Is the Part Number Index.
(1) NATIONAL STOCK NUMBER (NSN) INDEX. The NSN Index has three columns as follows:
STOCK NUMBER Column. Contains the NSN in national item Identification number (NIIN) sequence. The
NIIN consists of the last nine digits of the NSN.
FIG. Column. Contains the number of the figure where the item is identified/located.
ITEM Column. Contains the item number associated with the figure number in the adjacent column.