plied from technical service key depots, and authorized for installation at indicated maintenance
(3) Maintenance. The lowest maintenance echelon authorized to use, stock, install, or manufacture the part
is indicated by the following code symbol:
O ------------------ Organizational Maintenance
(1st and 2d Echelon)
b. Federal Stock Numbers. When a Federal stock number is available for a part, it will be shown in this column,
and used for requisitioning purposes.
(1) The item name and a brief description of the part are shown.
(2) A five-digit Federal supply code for manufacturers and other technical services is shown in parentheses
followed by the manufacturer's part number, for identification purposes. This number will be used for
requisitioning purposes when no Federal stock number is indicated in the Federal stock number column.
Example: (08645) 86453
d. Unit of Issue. Where no abbreviation is shown in this column, the unit of issue is each.
e. Expendability. Those items classified as nonexpendable are indicated by letters NX. Items not indicated by
NX are expendable.
Quantity Authorized. This column lists the quantities of parts, accessories, tools, or publica-