fourth position indicates whether the item is to be
name and, if required, a minimum description to
repaired and identifies the lowest maintenance
identify the item.
level with the capability to perform complete re-
g. Unit of Measure (U/M). Indicates the stand-
pair (i.e., all authorized maintenance functions).
ard of the basic quantity of the listed item as used
This position will contain one of the following
in performing the actual maintenance function.
This measure is expressed by a two-character
a l p h a b e t i c a l abbreviation (e.g., ea, in, pr, etc).
When the unit of measure differs from the unit
F--The lowest maintenance level capable of
of issue, the lowest unit of issue that will satisfy
complete repair of the support item is the
the required units of measure will be requisitioned.
direct support level.
h. Quantity Incorporated in Unit. Indicates the
Z--Nonreparable. No repair is authorized.
quantity of the item used in the breakout shown
on the illustration figure, which is prepared for
(3) Recoverability code. Recoverability
a functional group, subfunctional group, or an
codes are assigned to support items to indicate the
disposition action on unserviceable items. The re-
coverability code is entered in the fifth position of
4. Special Information
the Uniform SMR Code format as follows:
a. Usable on codes are shown in the descrip- -
tion column. Uncoded items are applicable to all
models. Identification of the usable on codes used
in this publication are:
Z--Nonreparable item. When unserviceable,
condemn and dispose at the level indicated
in position 3.
F--Reparable item. When uneconomically re-
parable, condemn and dispose at the direct
D--Reparable item. When beyond lower level
repair capability, return to depot. Con-
b. The following publication pertains to the
demnation and disposal not authorized
AN/PGC1, AN/PGC3, TT-4A/TG, TT-4B/TG,
below depot level.
c. National Stock Number. Indicates the Na-
T G , TT-598A/TG, TT-698B/TG, TT-722/TG,
tional stock number assigned to the item and will
and TT722A/TG and its components:
be used for requisitioning purposes.
TM 11581520612, Teletypewriter Sets AN
d. Part Number. Indicates the primary num-
PGC1 and AN/PGC3, and Teletypewriters
ber used by the manufacturer ( individual, com-
pany, firm, corporation, or Government activity),
and TT537/G, TT698/TG, TT698A/TG and
which controls the design and characteristics of
the item by means of its engineering drawings,
c. The illustrations in this manual are identical
specifications, standards, and inspection require-
to those published in TM 11581520634P1.
ments to identify an item or range of items.
Only those parts assigned to third position SMR
maintenance code "C" or "O" are listed the tabu-
lar listing; therefore, there may be a break in the
When a stock numbered item is requisi-
item number sequence. Only illustration contain-
tioned, the repair part received may
ing organizational authorized items appear in this
have a different part number than the
part being replaced.
5. How to Locate Repair Parts
e. Federal Supply Code for Manufacturer
a. When National stock number or part number
( F S C M ) . The FSCM is a 5-digit numeric code
listed in SB 70842 which is used to identify the
manufacturer, distributor, or Government agency,
(1) First. Using the table of contents, deter-
mine the functional group within which the item
belongs. This is necessary since illustrations are
f . Description. Indicates the Federal item