the illustration figure, which is prepared for a func-
tional group, subfunctional group, or an assembly.
4. Special Information
ZNonreparable item. When unserviceable, con-
demn and dispose at the level indicated in
Usable on codes are shown in the description
column. Uncoded items are applicable to all models.
W h e n uneconomically
Identification of the usable on codes used in this
reparable, condemn and dispose at the direct
H R e p a r a b l e i t e m . W h e n uneconomically
reparable, condemn and dispose at the general
c. National Stock Number. Indicates the National
5. How to Locate Repair Parts
stock number assigned to the item and will be used
a. When National stock number or part number is
for requisitioning purposes.
d. Part Number. Indicates the primary number
(1) First. Using the table of contents, determine
used by the manufacturer (individual, company,
the functional group within which the item belongs.
firm, corporation, or Government activity), which
This is necessary since illustrations are prepared for
controls the design and characteristics of the item
functional groups and listings are divided into the
by means of its engineering drawings,
(2) Second Find the illustration covering the
requirements to identify an item or range of items.
functional group to which the item belongs.
(3) Third Identify the item on the illustration
When a stock numbered item is
and note the illustration figure and item number of
requisitioned the repair part received
may have a different part number than
(4) Fourth. Using the Repair Parts Listing, find
the part being replaced.
e. Federal Supply Code for Manufacturer (FSCM),
t h e figure and item number noted on the
The FSCM is a 5-digit numeric code listed in SB
b. When National stock number or part number
708-42 which is used to identify the manufacturer,
distributor, or Government agency, etc.
f. Description Indicates the Federal item name
(1) First. Using the Index of National Stock
Numbers and Part Numbers, find the pertinent
and, if required, a minimum description to identify
National stock number or part number. This index
is in NIIN sequence followed by a list of part num-
g. Unit of Measure (U/M) Indicates the standard
bers in alphameric sequence, cross-referenced to the
of the basic quantity of the listed item as used in
illustration figure number and item number.
performing the actual maintenance function. This
(2) Second After finding the figure and item
m e a s u r e is e x p r e s s e d by a two-character
number, locate the figure and item number in the
alphabetical abbreviation (e.g., ea, in, pr, etc). When
repair parts list.
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
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