How to Locate Repair Parts. - TM-55-4920-439-13-P0090

TM 55-4920-439-13&P

(5) NSN's for bulk materiels are referenced in the description column in the line item entry for the item to be

manufactured/fabricated.

(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 (see paragraph 4, 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 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, pound) or 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.

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.

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.

NSN

*The NIIN consists of the last 9 digits of the NSN (i.e., 5305-01-674-1467).

NIIN

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