e. Part Number. 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 a stock numbered item is requisitioned, the item received may have a different
part number than the part being replaced.
Description. Indicates the Federal item name and, if required, a minimum description to identify the item.
g. Unit of Measure (U/M). Indicates the standard of the basic quantity of the listed item as used in performing the
actual maintenance function. This measure is expressed by a two-character alphabetical abbreviation (e.g., ea, in, pr,
etc). When the unit of measure differs from the unit of issue, the lowest unit of issue that will satisfy the required units of
measure will be requisitioned.
h. Quantity Incorporated 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 assembly. A "V" appearing in this column in lieu
of a quantity indicates that no specific quantity is applicable, (e.g., shims, spacers, etc).
National Stock Number and Part Number Index.
A list, in National Item Identification Number (NIIN) sequence, of all National Stock Numbers (NSN) appearing in the
listing, followed by a list in alphanumeric sequence, of all part numbers appearing in the listing. National stock number
and part numbers are cross-referenced to each illustration figure and item number appearance.