Refer to the Part Number Index to find the NSN, if
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. The
NSN index is in National Item Identification Number (NIIN) sequence
(see 4.1(1)). The part numbers in the Part Number index are listed in
ascending alphanumeric sequence (see 4.b). Both indexes cross-refer-
ence you to the illustration figure and item number of the item you
are looking for.
(2) Second. After finding the figure and item number, verify
that the item is the one you're looking for, then locate the item
number in the repair parts list for the figure.