Usable On Code

TM 5-4110-240-13&P

c. National Stock Number.

Indicates the

C4. HOW TO LOCATE REPAIR PARTS.

National stock number assigned to the item and which

will be used for requisitioning.

a. When National Stock Number or Part

Number is Unknown:

d. Part Number. Indicates the primary number

used by the manufacturer (individual, company, firm,

(1) First. Using the table of contents, determine

corporation, or Government activity), which controls the

the functional group within which the item belongs. This

design and characteristics of the item by means of its

is necessary since illustrations are prepared for

engineering drawings, specifications, standards, and

functional groups and listings are divided into the same

inspection requirements to identify an item or range of

groups.

items.

(2) Second. Find the illustration covering the

NOTE: When a stock numbered item is requisitioned,

functional group to which the item belongs.

the item received may have a different part number than

the part being replaced.

(3) Third. Identify the item on the illustration

and note the illustration figure and item number of the

e. Federal Supply Codes for Manufacturers

item.

(FSCM). The FSCM is a 5-digit numeric code listed in

SB 708-42 which is used to identify the manufacturer,

(4) Fourth. Using the Repair Parts Listing, find

distributor, or Government agency, etc.

the figure and item number noted on the illustration.

f. Description.

Indicates the Federal item

b. When National Stock Number or Part

name, and if required, a minimum description to identify

Number is Known.'

the item.

(1) First. Using the Index of National Stock

(1) Usable On Code. The Usable On Code

Numbers and Part Numbers, find the pertinent National

appears in the lower right corner of the Description

stock number or part number. This index is in NIIN

column heading. Usable On Codes are shown as a

sequence followed by a list of part numbers in

three-position alphanumeric field, right justified, on the

alphanumeric sequence, cross-referenced to the

first line applicable item description nomenclature.

illustration figure number and item number

Uncoded Items are applicable to all models.

Identification of the Usable On Codes used in the RPSTL

(2) Second. After finding the figure and item

are:

number, locate the figure and item number in the repair

parts list.

Code

Used On

DQH

Model MDSI-150R

C-5. ABBREVIATIONS.

EL'K

Model REF 150

All abbreviations used in this manual are in

g. Unit of Measure. Indicates the standard of

accordance with MIL-STD-1 2D.

the basic quantity of the listed item as used in performing

:he actual maintenance function. This measure is

expressed by a two-character alphabetical abbreviation

(e.g., ea, in, pr, etc). When the unit of measure differs

from the unit of issue, the lowest unit of issue that will

satisfy the required units of measure will be requisitioned

h. Quantity Incorporated 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, etc.).

C-3 Change 3