therefore, there may be a break in the item number
Stock number assigned to the item and will be used
sequence. Only illustrations containing organiza-
for requisitioning purposes.
tional authorized item appear in this manual.
d. Federal Supply Code for Manufacturer (FSCM).
c. National stock numbers (NSN 's) that are miss-
The FSCM is a 5-digit numeric code listed in SB
ing from P source coded items have been applied for
708-41/42 which is used to identify the manufac-
and will be added to this TM by future change/
turer, distributor, or Government agency, etc.
revision when they are entered in the Army Master
e. Part Number. Indicates the primary number
Data File (AMDF). Until the NSN'S are established
used by the manufacturer (individual, company,
and published, submit exception requisitions to
firm, corporation, or Government activity), which
Commander, US Army Communications-Elec-
controls the design and characteristics of the item by
tronics Command and Fort Monmouth, ATTN: DR-
means of its engineering drawings, specifications,
SEL-MM, Fort Monmouth, New Jersey 07703 for
standards, and inspection requirements to identify
the part required to support your equipment.
an item or range of items.
5. How to Locate Repair Parts
NOTE
When a stock numbered item is requisi-
a. When National stock number or part number is
tioned, the repair part received may have a
unknown.
different. part number than the part being
(1) First. Using the table of contents, determine
replaced.
the functional group within which the item belongs.
This is necessary since illustrations are prepared for
f. Description. Indicates the Federal item name
functional groups and listings are divided into the
and, if required, a minimum description to identify
same groups.
the item.
(2) Second. Find the illustration covering the
g. Unit of Measure (U/M). Indicates the standard
functional group to which the item belongs.
of the basic quantity of the listed item as used in
(3) Third. Identify the item on the illustration
performing the actual maintenance function. This
and note the illustration figure and item number of
measure is expressed by a two-character alphabetical
the item.
abbreviation (e.g., ea, in, pr, etc). When the unit of
measure differs from the unit of issue, the lowest unit
(4) Fourth. Using the Repair Parts Listing, find
of issue that will satisfy the required units of mea-
the figure and item number noted on the illustration.
sure will be requisitioned.
b. When National stock number or part number is
h. Quantity Incorporated in Unit. Indicates the
known.
(1) First. Using the Index of National Stock
quantity of the item used in the breakout shown on
Numbers and Part Numbers, find the pertinent
the illustration figure, which is prepared for a func-
tional group, subfunctional group, or an assembly.
National stock number or part number. This index is
in NIIN sequence followed by a list of part numbers
4. Special Information
in alphameric sequence, cross-referenced to the illus-
tration figure number and item number.
a. The following publication pertains to the
AB-621/G and its components:
(2) Second. After finding the figure and item
TM 11-5985-334-l4, Mast AB-621/G
number, locate the figure and item number in the
repair parts list.
b. The illustrations in this manual are identical to
those published in TM 11-5985-334-30P. Only those
6. Abbreviations
parts assigned the third position SMR maintenance
Not applicable.
cOde "C" or "O" are listed in the tabular listing;
(Next printed page is 4.)
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