c. National Stock Number. Indicates the National
stock number assigned to the item and will be used
for requisitioning purposes.
d. 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
5. How to Locate Repair Parts
by means of its engineering drawings, specifications
a. When National stock number or part number is
standards, and inspection requirements, to identify
an item or range of items.
(1) First. Using the table of contents, determine
the functional group or subgroup within which the
When a stock-numbered item is requisitioned,
repair part belongs. This is necessary since illustra-
the repair part received may have a different
tions are prepared for functional groups or sub
part number than the part being replaced.
groups and listings are divided into the same
e. Federal Supply Code for Manufacturer (FSCM).
The FSCM is a 5-digit numeric code listed in SB
(2) Second. Find the illustration covering the
functional group or subgroup to which the repair
708-42 which is used to identify the manufacturer,
distributor, or Government agency, etc.
(3) Third. Identify the repair part on the illustra-
f. Description. Indicates the Federal item name
tion and note the illustration figure and item num-
and, if required, a minimum description to identify
ber of the repair part.
(4) Fourth. Using the Repair Parts Listing, find
g.Unit of Measure (U/M). Indicates the standard
the figure and item number noted on the illustra-
of the basic quantity of the listed item as used
in performing the actual maintenance function. This
b. When National stock number or part number is
measure is expressed by a two-character alpha-
betical abbreviation (e.g., ea, in, pr, etc.). When the
(1) First. Using the Index of National Stock Num-
unit of measure differs from the unit of issue, the
bers and Part Numbers, find the pertinent National
lowest unit of issue that will satisfy the required
units of measure will be requisitioned.
stock number or part number. This index is in
NIIN sequence, followed by a list of part numbers
h. Quantity Incorporated in Unit. Indicates the
in ascending alphanumeric sequence, cross-
quantity of the item used in the breakout shown
-referenced to the illustration figure number and
on the illustration figure, which is prepared for a
functional group, subfunctional group, or an
(2) Second After finding the figure and item
number, locate the figure and item number in the
4. Special Information
repair parts list.
Usable on codes are shown in the description
column. Uncoded items are applicable to all models.
Identification of the usable on codes used in this