TM 3-4240-284-20&P
(4) Fourth. Using the Repair Parts
h. Quantity Incorporated in Unit. Indicates
Listing, find the figure and item
the quantity of the item used in the breakout
number noted on the illustration.
shown on the illustration figure, which is
prepared for a functional group,
b. When National Stock Number or Part
subfunctional group, or an assembly. A "V"
Number is Known:
appearing in this column in lieu of a quantity
(1) First. Using the Index of National
indicates that no specific quantity is
--
Stock Numbers and Part Numbers,
applicable, (e. g., shims, spacers, etc).
find the pertinent National stock
number or part number. This index is in
NIIN sequence followed by a list of part
C-4. SPECIAL INFORMATION.
numbers in alphameric sequence,
cross-referenced to the illustration
a. Detailed manufacturing instructions for
figure number and item number.
items source coded to be manufactured or
fabricated are found in appendix E of this
(2) Second. After finding the figure and
manual. Bulk materials required to
item number, locate the figure and item
manufacture items are listed in the Bulk
number in the repair parts list.
Material Group of this manual.
b. Action change codes indicated in the
C-6. ABBREVIATIONS.
lefthand margin of the listing page denote
Abbreviation
Explanation
the following
CFM . . . . . . . . . . . . .
cubic feet per minute
N
Indicates an added item.
dia . . . . . . . . . . . . . . .
diameter
hd . . . . . . . . . . . . . . . .
C
Indicates a change in data.
head
hexagon
hex . . . . . . . . . . . . . . .
R
Indicates a change in NSN only.
in. . . . . . . . . . . . . . . .
inch
inside diameter
id . . . . . . . . . . . . . . . .
C-5. HOW TO LOCATE REPAIR PARTS.
lg . . . . . . . . . . . . . . . .
long
a. When National Stock Number or Part
MFD . . . . . . . . . . . . .
manufactured
Number is Unknown:
mtg . . . . . . . . . . . . . .
mounting
(1) First. Using the table of contents de-
NPS . . . . . . . . . . . . . .
National Pipe Standard
termine the functional group within
nom . . . . . . . . . . . . . .
nominal
which the item belongs. This is neces-
no . . . . . . . . . . . . . . . .
number
sary since illustrations are prepared for
overall
oa . . . . . . . . . . . . . . . .
fictional groups, and listings are di-
od . . . . . . . . . . . . . . . .
outside diameter
vided into the same groups.
. plus or minus
porm . . . . . . . . . . . .
PSI . . . . . . . . . . . . . .
pounds per square inch
(2) Second. Find the illustration cover-
thk . . . . . . . . . . . . . . .
thick
ing the fictional group to which the
thd . . . . . . . . . . . . . . .
thread
item belongs.
UNC . . . . . . . . . . . . .
United National Course
Third. Identify the item on the illus-
(3)
UNF . . . . . . . . . . . . .
United National Fine
tration and note the illustration figure
W/ . . . . . . . . . . . . . . . .
with
and item number of the item.
C-3
.
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