When National Stock Number or Part Number is Known:
(1) First. Using the National Stock Number Index or Part Number Index, find the pertinent NSN
or part number. The NSN Index is in National Item Identification Number (NIIN) sequence
[see paragraph F-4.a(1)]. The part numbers in the Part Number Index are listed in ascending
alphanumeric sequence (see paragraph F-4.b). Both indexes cross-reference you to the illus-
tration/figure and item number of the item you are looking for.
(2) Second. Turn to 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.
Abbreviations used in this appendix are listed in MIL-STD-12.