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TM 5-4320-313-24P
c. FSCM (Column (3)). The Federal Supply Code for Manufacturer (FSCM) is a 5-digit numeric code which is
used to identify the manufacturer, distributor, or Government agency/activity that supplies the item.
d. PART NUMBER (Column (4)). Indicates the primary number used by the manufacturer, (individual, company,
firm, corporation, or Government activity), which controls the design and characteristics of the item by means of its
engineering drawings, specifications, standards, and inspection requirements to identify an item or range of items.
NOTE
When you use an NSN to requisition an item, the item you receive may have a different part
number from the number listed.
e. DESCRIPTION AND USABLE ON CODE (UOC) (Column (5). This column includes the following information:
(1) The Federal item name and, when required, a minimum description to identify the item.
(2) The physical security classification of the item is indicated by the parenthetical entry, e.g., Phy Sec C1 (C)-
Confidential, Phy Sec C1 (S)-Secret, Phy Sec C1 (T)-Top-Secret.
(3) Items that are included in kits and sets are listed below the name of the kit or set.
(4) Spare/repair parts that make up an assembled item are listed immediately following the assembled item line
entry.
(5) Part numbers of bulk materials are referenced in this column in the line entry for the item to be
manufactured/fabricated.
(6) When the item is not used with all serial numbers of the same model, the effective serial numbers are shown
on the last line(s) of the description (before UOC).
(7) The usable on code, when applicable (reference paragraph 5, Special Information).
(8) In the Special Tools List Section, the basis of issue (BOI) appears as the last line(s) in the entry for each
special tool, special TMDE, and other special support equipment. When density of equipment supported exceeds density
spread indicated in the basis of issue, the total authorization is increased proportionately.
(9) The statement END OF FIGURE" appears just below the last item description in Column (5) for a given figure
in both Section II and Section III.
(10) The identure, shown as dots appearing before the repair part, indicates that the item is a repair part of the
next higher assembly.
f. QTY (Column (6)). The QTY (quantity per figure) column 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 instead of a quantity indicates that the quantity is variable and may vary from application
to application.
4. EXPLANATION OF INDEX FORMAT AND COLUMNS (SECTION IV).
a. NATIONAL STOCK NUMBER (NSN) INDEX.
(1) STOCK NUMBER Column. This column lists the NSN in national item identification number
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