D-2. EXPLANATION OF COLUMNS (CONT)
b. Column (2) - Level. This column identifies the lowest level of maintenance that requires
the listed item which is C - Operator/Crew.
c. Column (3) - National Stock Number. This is the National Stock Number assigned to the
item; use it to request or requisition the item.
d. Column (4) - Description. Indicates the Federal item name and, if required, a description
to identify the item. The last line for each item indicates the Federal Supply Code for Manufac-
turer (FSCM) in parentheses followed by the part number.
e. Column (5) - Unit of Measure (U/M). Indicates the measure used in performing the actual
maintenance function. This measure is expressed by a two-character alphabetical abbreviation
(e.g., ea, in., pr). If the unit of measure differs from the unit of issue, requisition the lowest unit of
issue that will satisfy your requirements.