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TM 55-4920-436-13&P
(5) NSNs for bulk materiels are referenced in the description column in the line item entry for the item to be
(6)  When the part to be used differs between serial numbers of the same model,
the effective serial
numbers are shown as the last line of the description.
(7) The USABLE ON CODE, when applicable.
(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 supported exceeds
density spread indicated in the basis of issue, the total authorization is increased proportionately.
g. Column 7, U/M. Column 7, Unit of Measure (U/M) indicates the measure (e.g., foot, gallon, pounor count
(e.g., each, dozen, gross) of a listed item. A two-character alpha code (e.g., FT, GL, LB, EA, DZ, GR) appears in
this column to indicate the measure or count. If the U/M code appearing in this column differs from the Unit of Issue (U/I)
code listed in the Army Master Data File (AMDF), request the lowest U/I that will satisfy your needs.
h. Column 8, QTY INC IN UNIT. Column 8, Quantity Incorporated in Unit (QTY INC 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, spacers).
C-4. How to Locate Repair Parts.
a. When National Stock Number or Part Number is Not Known:
(1) First. Using the table of contents, determine the functional group or subfunctional group to which the
item belongs. This is necessary since figures are prepared for functional groups and subfunctional groups, and listings
are divided into the same groups.
(2) Second. Find the figure covering the functional group or subfunctional group to which the item belongs.
(3) Third. Identify the item on the figure and note the item number of the item.
(4) Fourth. Refer to the Repair Parts List for the figure to find the line item entry for the item number noted
on the figure.
b. When National Stock Number or Part Number is Known:
(1) First. Using the Index of National Stock Numbers and Part Numbers, find the pertinent National stock
number or part number. The NSN index is in National Item Identification Number (NIIN)* sequence. The part numbers in
the Part Number index are listed in ascending alphanumeric sequence.  Both indexes cross-reference you to the
illustration figure and item number of the item you are looking for.
*The NIIN consists of the last 9 digits of the NSN (i.e., 5305-01-674-1467).


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