drawings, specifications standards, and inspec-
tion requirements, to identify an item or range
When a stock-numbered item is re-
5. How to Locate Repair Parts
quisitioned, the repair part received
may have a different part number than
a. When National stock number or part
the part being replaced.
number is unknown:
(1) First. Using the table of contents, de-
e. Federal Supply Code for Manufacturer
termine the functional group or functional sub-
(FSCM). The FSCM is a 5-digit numeric code
group within which the repair part belongs. This
listed in SB 708-42 which is used to identify the
is necessary since illustrations are prepared for
m a n u f a c t u r e r , distributor, or Government
functional groups or functional subgroups, and
listings are divided into the same groups.
f. Description. Indicates the Federal item
(2) Second. Find the illustration covering
name and, if required, a minimum description to
the functional group or functional subgroup to
identify the item.
which the repair part belongs.
g. Unit of Measure (U/M). Indicates the stan-
(3) Third. Identify the repair part on the
dard of the basic quantity of the listed item as
illustration and note the illustration figure and
used in performing the actual maintenance
item number of the repair part.
function. This measure is expressed by a two-
(4) Fourth. Using the Repair Parts Listing,
character alphabetical abbreviation (e.g., ea, in,
find the figure and item number noted on the
pr, etc.). When the unit of measure differs from
the unit of issue, the lowest unit of issue that
b. When National stock number or part
will satisfy the required units of measure will be
number is known:
(1) First. Using the Index of National Stock
h. Quantity Incorporated in Unit. Indicates
Numbers and Part Numbers, find the pertinent
the quantity of the item used in the breakout
National stock number or part number. This
shown on the illustration figure, which is pre-
index is in ascending NSN sequence, followed by
pared for a functional group, subfunctional
a list of part n u m b e r s in ascending al-
group, or an assembly.
phanumeric sequence, cross-referenced to the
illustration figure number and item number.
(2) Second. After finding the figure and
4. Special Information
item number, locate the figure and item number
Usable on codes are shown in the description
in the repair parts l i s t .
column. Uncoded items are applicable to all
models. Identification of the usable on codes
used in this publication are:
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