6. How to Locate Repair Parts.
When National Stock Number or Part Number is Not Known.
First. Using the table of contents, determine the assembly group or subassembly group to which the item
belongs. This is necessary since figures are prepared for assembly groups and subassembly groups, and listings are
divided into the same groups.
Second. Find the figure covering the assembly group or subassembly group to which the item belongs.
Third. Identify item on the figure and note the item number.
Fourth. Refer to the Repair Parts List for the figure to find the part number for the item number noted on the
Fifth. Refer to the Part Number Index to find the NSN, if assigned.
When National Stock Number or Part Number is Known:
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. The part numbers in
the Part Number Index are listed in ascending alphanumeric sequence. Both indexes cross-reference you to the
illustration figure and item number of the item you are looking for.
Second. After finding the figure and item number, verify that the item is the one you are looking for, then
locate the item number in the repair parts list for the figure.
Acronym for National Item Identification Number (consists of the last 9 digits of
Acronym for Repair Parts and Special Tools List
Acronym for Source, Maintenance and Recoverability Code
Acronym for Test, Measurement, and Diagnostic Equipment