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TM 55-4920-383-13&P
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, specification standards, and inspection requirements to iden-
tify an item or range of items.
NOTE: When you use a NSN to requisition an item, the item you receive may have a different part
number from the part ordered.
e. Description and Usable On Code (UOC) (Column (5)). This column includes the following informs
tion:
(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 (insert ap-
plicable physical security classification abbreviation, 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 assem-
bled item line entry.
(5) Part numbers for bulk materials are referenced in this column in the line item 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 (see pararaph C-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 equipments sup-
ported exceeds density spread indicated in the basis of issue, the total authorization is increased propor-
tionately.
(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.
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 in lieu of a quantity indicates that the quantity is
variable and the quantity may vary from application to application.
C-4. Explanation of Columns (Sect. IV).
a. National Stock Number (NSN) Index.
(1) Stock Number Column. This column lists the NSN by National item identification number (NIIN)
NSN
sequence. The NIIN consists of the last nine digits of the NSN (i.e., 5305-01-674-1467). When using this
NIIN
column to locate an item, ignore the first 4 digits of the NSN. However, the complete NSN should be used
when ordering items by stock number.
Change 2
C-5
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