Explanation of Columns (Sections II and III)
a. ITEM NO. (Column (1)). Indicates the number used to identify items called out in the illustration.
b. SMR Code (Column (2)). The Source, Maintenance, and Recoverability (SMR) code is a 5-position
code containing supply/requisitioning information, maintenance level authorization criteria, and disposition
instructions, as shown in the following breakout:
1st two positions
How you get an item
Who can install,
Who can do
replace or use
disposition action on
on the item
an unserviceable item
*Complete Repair Maintenance, capacity, capability, and authority to perform all corrective maintenance
tasks of the repair function in a use/user environment in order to restore serviceability to a failed item.
(1) Source Code. The source code tells you how to get an item needed for maintenance, repair, or
overhaul of an end item/equipment. Explanations of source codes follows:
Stocked items; use the applicable NSN to request/
requisition items with these source codes. They are
authorized to the level indicated by the code
entered in the 3rd position of the SMR code.
**Items coded PC are subject to deterioration.
Items with these codes are not to be requested/
requisitioned individually. They are part of a kit
which is authorized to the maintenance level
indicated in the 3rd position of the SMR code. The
complete kit must be requisitioned and applied.