b. The following publications pertain to the
AN/URM-157 and AN/URM-157A and their
H - R e p a r a b l e i t e m . W h e n uneconomically
reparable, condemn and dispose at the
TM 11-5821-248-12, Radio Set AN ARC-102
general support level.
TM 11-5821-248-20P, Radio Set AN/ARC-102.
c. N a t i o n a l Stock Number. I n d i c a t e s t h e
TM 11-5821-248-34P, Radio Set AN/ARC-102
National stock number assigned to the item and
will be used for requisitioning purposes.
TM 11-5821-248-35, Radio Set AN/ARC-102
d. Part Number. Indicates the primary number
T M 11-6625-622-12, Test Harness, Radio Set
used by the manufacturer (individual, company,
AN/URM-157 and AN/URM-157A
firm, corporation, or Government activity), which
TM 11-6625-622-20P, Test Harness, Radio Set
controls the design and characteristics of the item
by means of its engineering drawings,
AN/URM-157A (NSN 6624-00-236-1557)
T M 11-6625-622-40, Test Harness, Radio Set
requirements, to identify an item or range of
AN/URM-157 and AN/URM-157A
5. How to Locate Repair Parts
W h e n a stock numbered i t e m i s
a. When National stock number or part number
requisitioned, the repair part received may
have a different part number than the part
Using t h e table of contents.
determine the functional group within which the
e . F e d e r a l S u p p l y C o d e for Manufacturer
repair part belongs. T h i s is necessary since
(FSCM). The FSCM is a 5-digit numeric code
illustrations are prepared for functional groups and
listed in SB 708-42 which is used to identify the
listings are divided into the same groups.
manufacturer, distributor or Government agency.
(2) Second. Find the illustration covering the
functional group to which the repair part belongs.
f. Description. Indicates the Federal item name
(3) Third. Identify the repair part on the
and, if required, a minimum description to identify
illustration and note the illustration figure and
item number of the repair part.
g. Unit of Measure (U/M). Indicates
(4) Fourth. Using the Repair Parts Listing,
standard of the basic quantity of the listed item as
find the figure and item number noted on the
used in performing the actual maintenance func-
tion. This measure is expressed by a two-
b. When National stock number or part number
character alphabetical abbreviation (e. g., ea, in,
pr, etc.). When the unit of measure differs from
(1) First. Using the Index of National Stock
the unit of issue, the lowest unit of issue that will
Numbers and part Numbers, find the pertinent
satisfy the required units of measure will be
National stock number or part number. This index
is in ascending NIIN sequence followed by a list of
h. Quantity Incorporated in Unit. Indicates the
part numbers in ascending alphameric sequence,
quantity of the item used in the breakout shown
cross-referenced to the illustration figure number
on the illustration figure, which is prepared for a
and item number.
functional group, sub functional group, or an
(2) Second. After finding the figure and item
number, locate the figure and item number in the
4. Special Information
repair parts list.
a. Usable on codes are shown in the description
column. Uncoded items are applicable to all
models. Identification of the usable on codes used
in this publication are:
(Next printed page is 4.1)