actual maintenance function. This measure is expressed by
(b) The maintenance code entered in the fourth
a two-character alphabetical abbreviation (e.g., ea, in, pr,
p o s i t i o n indicates whether the item is to be repaired and
e t c . ) . When the U/M differs from the unit of issue, the
identifies the lowest maintenance level with the capability
lowest unit of issue that will satisfy the required U/M will
to perform complete repair; i.e., all authorized maintenance
functions, This position will contain one of the following
m a i n t e n a n c e codes:
h. Quantity Incorporated in Unit. Indicates the quan-
tity of the item used in the breakout shown on the illus-
t r a t i o n figure, which is prepared for a functional group,
subfunctional group, or an assembly. A "V" appearing in
- The lowest maintenance level capable of complete
this column in lieu of a quantity indicates that no specific
repair of the support item is the direct support level.
quantity is applicable (e.g., shims, spacers, etc.).
E - 4 S P E C I A L I N F O R M A T I O N . Usable on codes are
Z - Nonreparable. No repair is authorized.
shown in the description column. Uncoded items are applic-
(3) R e c o v e r a b i l i t y C o d e . R e c o v e r a b i l i t y c o d e s a r e
able to all models. Identification of the usable codes used in
assigned to support items to indicate the disposition action
this publication are:
on unserviceable items. The recoverability code is entered
i n the fifth position of the uniform SMR code format as
E-5 HOW TO LOCATE REPAIR PARTS.
- N o n r e p a r a b l e item. When unserviceable,
a. When National Stock Number or Part Number is
c o n d e m n and dispose at the level indi-
cated in position 3.
- Reparable item. When uneconomically
(1) First. Using the table of contents, determine the
functional group or subgroup within which the item
r e p a r a b l e , condemn and dispose at the
direct support level.
belongs. This is necessary since illustrations are prepared for
functional groups or subgroups, and listings are divided into
- Reparable item. When beyond lower level
the same groups.
r e p a i r capability, return to depot. Con-
(2) S e c o n d . Find the illustration covering the func-
d e m n a t i o n and disposal not authorized
tional group or subgroup to which the item belongs.
below depot level.
(3) T h i r d . Identify the item on the illustration and
c. National Stock Number (NSN). I n d i c a t e s t h e N S N
note the illustration figure and item number of the item.
a s s i g n e d to the item and which will be used for requisi-
(4) Fourth, Using the Repair Parts Listing, find the
figure and item number notes on the illustration.
d. Part Number. Indicates the primary number used by
b. When National Stock Number or Part Number is
t h e manufacturer (individual, company, firm, corporation,
o r Government activity), which controls the design and
characteristics of the item by means of its engineering draw-
the Index of National Stock
(1) First. U s i n g
ings, specifications, standards, and inspection requirements
Numbers and Part Numbers, find the pertinent NSN or part
to identify an item or range of items.
number. This index is in NIIN sequence, followed by a list
of part numbers in alphanumeric sequence, cross-referenced
NOTE: When a stock numbered item is requisitioned, the
to the illustration figure number and item number.
i t e m received may have a different part number than the
(2) Second. After finding the figure and item
part being replaced.
n u m b e r , locate the figure and item number in the repair
e. Federal Supply Code for Manufacturer (FSCM). T h e
FSCM is a 5-digit numeric code listed in SB 708-42 which is
E-6 ABBREVIATIONS. ( E x a m p l e s )
u s e d to identify the manufacturer, distributor, or Govern-
ment agency, etc.
f. Description. Indicates the Federal item name and, if
next higher assembly
unified coarse thread
required, a minimum description to identify the item.
g. Unit of Measure (U/M). Indicates the standard of the
u n i f i e d extra fine thread
unified fine thread
basic quantity of the listed item as used in performing the