c. National Stock Number.
C4. HOW TO LOCATE REPAIR PARTS.
National stock number assigned to the item and which
will be used for requisitioning.
a. When National Stock Number or Part
Number is Unknown:
d. Part Number. Indicates the primary number
used by the manufacturer (individual, company, firm,
(1) First. Using the table of contents, determine
corporation, or Government activity), which controls the
the functional group within which the item belongs. This
design and characteristics of the item by means of its
is necessary since illustrations are prepared for
engineering drawings, specifications, standards, and
functional groups and listings are divided into the same
inspection requirements to identify an item or range of
(2) Second. Find the illustration covering the
NOTE: When a stock numbered item is requisitioned,
functional group to which the item belongs.
the item received may have a different part number than
the part being replaced.
(3) Third. Identify the item on the illustration
and note the illustration figure and item number of the
e. Federal Supply Codes for Manufacturers
(FSCM). The FSCM is a 5-digit numeric code listed in
SB 708-42 which is used to identify the manufacturer,
(4) Fourth. Using the Repair Parts Listing, find
distributor, or Government agency, etc.
the figure and item number noted on the illustration.
Indicates the Federal item
b. When National Stock Number or Part
name, and if required, a minimum description to identify
Number is Known.'
(1) First. Using the Index of National Stock
(1) Usable On Code. The Usable On Code
Numbers and Part Numbers, find the pertinent National
appears in the lower right corner of the Description
stock number or part number. This index is in NIIN
column heading. Usable On Codes are shown as a
sequence followed by a list of part numbers in
three-position alphanumeric field, right justified, on the
alphanumeric sequence, cross-referenced to the
first line applicable item description nomenclature.
illustration figure number and item number
Uncoded Items are applicable to all models.
Identification of the Usable On Codes used in the RPSTL
(2) Second. After finding the figure and item
number, locate the figure and item number in the repair
Model REF 150
All abbreviations used in this manual are in
g. Unit of Measure. Indicates the standard of
accordance with MIL-STD-1 2D.
the basic quantity of the listed item as used in performing
:he 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 an assembly. A "V"
appearing in this column in lieu of a quantity indicates
that no specific quantity is applicable (e.g., shims,
C-3 Change 3