TM 11-6625-3055-24P
b. National stock numbers (NSNs) that are missing
c. National Stock Number. Indicates the National
from P source coded items have been applied for and
Stock Number assigned to the item and will be used for
will be added to this TM by future change/revision
requisitioning purposes.
when they are entered in the Army Master Data File
d. Federal Supply Code for Manufacturer (FSCM).
(AMDF). Until the NSNs are established and published,
The FSCM is a 5-digit numeric code listed in SB
submit exception requisitions to: Commander, US Ar-
708-41/42 which is used to identify the manufacturer,
my Communications-Electronics Command and Fort
distributor, or Government agency, etc.
Monmouth, ATTN: DRSEL-MM, Fort Monmouth,
e. Part Number. Indicates the primary number us-
New Jersey 07703 for the part required to support your
ed by the manufacturer (individual, company, firm,
equipment.
corporation, or the Government activity), which con-
trols the design and characteristics of the item by means
5. How to Locate Repair Parts
of its engineering drawings, specifications, standards,
and inspection requirements to identify an item or range
a. When National Stock Number (NSN) or Part
of items.
Number is unknown.
NOTE
(1) First. Using the Table of Contents, determine
the functional group within which the item belongs.
When a stock numbered item is requisitioned,
This is necessary since illustrations are prepared for
the repair part received may have a part
functional groups and listings are divided into the same
number that is different from the part that is
groups.
being replaced.
(2) Second. Find the illustration covering the
functional group to which the item belongs.
f. Description. Indicates the Federal Item Name
(3) Third. Identify the item on the illustration
and, if required, a minimum description to identify the
and note the illustration figure and item number of the
item.
item.
g. Unit of Measure (U/M). Indicates the standard
(4) F o u r t h . Using the Repair Parts Listing, find
of the basic quantity of the listed item as used in
the figure and item number noted on the illustration.
performing the actual maintenance function. This
b. When National Stock Number or Part Number is
measure is expressed by a two-character alphabetical
known.
abbreviation (e.g., ea, in, pr, etc.). When the unit of
(1) First. Using the Index of National Stock
measure differs from the unit of issue, the lowest unit of
Numbers and Part Numbers, find the pertinent Na-
issue that will satisfy the required units of measure will
tional Stock Number or Part Number. This index is in
be requisitioned.
NIIN sequence followed by a list of part numbers in
h. Quantity Incorporated in Unit. Indicates the
alphanumeric sequence, cross-referenced to the illustration
quantity of the item used in the breakout shown on the
figure number and item number.
illustration figure, which is prepared for a functional
After finding the figure and item
(2) S e c o n d .
group, subfunctional group, or an assembly.
number, locate the figure and item number in the repair
4. Special Information
parts list.
6. Abbreviations
a. The following publication pertains to the
AN/USM-486/U and its components:
Not applicable.
TM 11-6625-3055-14P, Digital Multimeter AN/USM-
486/U. (To be published.)
(Next printed page is 4)
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