EXPLANATION OF CROSS-REFERENCE INDEXES WORK PACKAGES FORMAT AND COLUMNS
National Stock Number (NSN) Index Work Package.
STOCK NUMBER Column. This column lists the NSN in National item identif cation number (NIIN) sequence. The
NIIN consists of the last nine digits of the NSN.
When using this column to locate an (e.g., 5385-01-
574-1476) item, ignore the f rst four digits of NIIN the
NSN. However, the complete NSN should be used when
ordering items by stock number.
FIG. Column. This column lists the number of the f gure where the item is identif ed/located. The f gures are in nu-
merical order in the repair parts list and special tools list work packages.
The item number identif es the item associated with the f gure listed in the adjacent FIG. column.
This item is also identif ed by the NSN listed on the same line.
2. Part Number (P/N) Index Work Package. P/Ns in this index are listed in ascending alphanumeric sequence
(vertical arrangement of letter and number combinations which places the f rst letter or digit of each group in order A
through Z, followed by the numbers 0 through 9 and each following letter or digit in like order).
Indicates the part number assigned to the item.
PART NUMBER Column.
FIG. Column. This column lists the number of the f gure where the item is identif ed/located in the repair parts list and
special tools list work packages.
ITEM Column. The item number is the number assigned to the item as it appears in the f gure reference in the adja-
cent f gure number column.
HOW TO LOCATE REPAIR PARTS
When NSNs or P/Ns Are Not Known.
First. Using the table of contents, determine the assembly group to which the item belongs. This is necessary since
f gures are prepared for assembly groups and subassembly groups, and lists are divided into the same groups.
Find the f gure covering the functional group or the subfunctional group to which the item belongs.
Identify the item on the f gure and note the number(s).
Fourth. Look in the repair parts list work packages for the f gure and item numbers. The NSNs and part numbers are
on the same line as the associated item numbers.
When NSN Is Known.
First. If you have the NSN, look in the STOCK NUMBER column of the NSN index work package. The NSN is ar-
ranged in NIIN sequence. Note the f gure and item number next to the NSN.
Turn to the f gure and locate the item number. Verify that the item is the one you are looking for.
When P/N Is Known.
First. If you have the P/N and not the NSN, look in the PART NUMBER column of the P/N index work package. Iden-
tify the f gure and item number.
Look up the item on the f gure in the applicable repair parts list work package.