b. When National Stock Number or Part
given for a better understanding of the parts rela-
Number is Known.
tionship, however, only those parts assigned
maintenance code "O" are listed in the tabular
(1) First. Using the Index of National Stock
portion and only these parts are authorized for
Numbers and Part numbers, find the pertinent Na-
requisitioning from this manual.
tional stock number or part number. This index is
in NIIN sequence followed by a list of part
5. How to Locate Repair Parts.
numbers in alphanumeric sequence, cross-
referenced to the illustration figure number and
a. When National Stock Number or Part
item number.
Number is Unknown:
(2) Second. After finding the figure and item
(1) First. Using the table of contents, deter-
number, locate the figure and item number in the
mine the functional group within which the repair
repair parts list.
part belongs. This is necessary since illustrations
are prepared for functional groups, and listings are
6. Abbreviations.
divided into the same groups.
(2) Second. Find the illustration covering the
Explanation
Abbreviations
functional group to which the repair part belongs.
Assembly(ies)
ASSY
(3) Third. Identify the repair part on the il-
Feet (foot)
FT
lustration and note the illustration figure number
HD
Head
and item number of the repair part.
Hexagon
HEX
IN
Inch(es)
(4) Fourth. Using the Repair Parts Listing,
Long (length)
LG
find the figure and item number noted on the il-
Number(s)
NO
lustration.
4