TM 9-4520-257-12&P 0042 00
Column (7) Quantity per Figure (QTY). The QTY column indicates the quantity of the item used in the
breakout shown on the illustration/figure, which is prepared for a functional group, subfunctional group, or
an assembly. A V appearing in this column instead of quantity indicates that the quantity is a variable
and that the quantity may change from application to application.
EXPLANATION OF CROSS-REFERENCE INDEX FORMAT AND COLUMNS
1. National Stock Number (NSN) Index Work Package.
Stock Number Column. This column lists the NSN in national item identification number (NIIN)
sequence. The NIIN consists of the last nine digits of the NSN. (When using this column to locate an
item, ignore the first four digits of the NSN. However, use the complete NSN (13 digits) when
requisitioning by stock number.)
Figure (FIG.) Column. This column lists the number of the figure where an item is identified/located. The
figures are in numerical order in the RPSTL work packages.
Item Column. The item number identifies the item associated with the figure listed in the adjacent FIG.
column. This item is also identified by the NSN listed on the same line.
2. Part Number (P/N) Index Work Package. The P/Ns in this index are listed in ascending alphanumeric
sequence (vertical arrangement of letter and number combination that place the first 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
P/N Column. Indicates the P/N assigned to the item.
FIG. Column. This column lists the number of the figure where the item is identified/located in the
Item Column. The item number is the number assigned to the item as it appears in the figure referenced
in the adjacent figure number column.
HOW TO LOCATE REPAIR PARTS
1. When NSNs or P/Ns Are Not Known.
First: Using the table of contents, determine the assembly 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.