c. National Stock Number. Indicates the National stock number assigned to the item and will be used for
d. Part Number. Indicates the primary number used by the manufacturer (individual, company, firm,
corporation, or Government activity), which controls the design and characteristics of the item by means of its
engineering drawings, specifications, standards, and inspection requirements to identify an item or range of
When a stock numbered item is requisitioned the repair part received may have a
different part number than the part being replaced.
e. Federal Supply Code for Manufacturer (FSCM). The FSCM is a 5-digit numeric code listed in SB 708-
41/42 which is used to identify the manufacturer, distributor, or Government agency, etc.
f. Description. Indicates the Federal item name and, if required, a minimum description to identify the
g. Unit of Measure (U/M). Indicates the standard of the basic quantity of the listed item as used in
performing the 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.
4. Special Information
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:
b. The following publications pertain to the RT- 21 1A/TPX, RT-264D/UPX-6, RT-820/TPX-44 and its
TM 11-5895-207-10, Interrogator Set AN/TPX-26 and Radar Set Control Group AN/FPA-14
TM 11-5895-207-20, Interrogator Set AN/TPX-26 and Radar Set Control Group ANIFPA-14
TM 11-5895-207-20P, Interrogator Set AN/TPX-26 and Radar Control Group AN/FPA-14
TM 11-5895-208-10, Interrogator Set AN/TPX-27 TM11-5895-208-20,InterrogatorSet AN/TPX-27
TM 11-5895-208-20, Interrogator Set AN/TPX-27 TM 11-5895-208-20P, Interrogator Set ANITPX-27
c. The illustrations in this manual are identical to those published in TM 11-5895-245-34P. Only those
parts assigned the third position SMR maintenance code "C" or "O" are listed in the tabular listing; therefore,
there may be a break in the item number sequence. Only illustrations containing organizational authorized
items appear in this manual.
5. How to Locate Repair Parts
a. When National stock number or part number is unknown.
(1) First. Using the table of contents, determine the functional group within which the item belongs. This
is necessary since illustrations are prepared for functional groups and listings are divided into the same groups.
(2) Second. Find the illustration covering the functional group to which the item belongs.
(3) Third. Identify the item on the illustration and note the illustration figure and item number of the item.
(4) Fourth. Using the Repair Parts Listing, find the figure and item number noted on the illustration.
b. 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. This index is in NIIN sequence followed by a list of part numbers in alphanumeric
sequence, cross-referenced to the illustration figure number and item number.
(2) Second. After finding the figure and item number, locate the figure and item number in the repair
(Next printed page is 4)