3. Explanation of Columns (Sections II and III).
ITEM NO. (Column (1)). Indicates the number used to identify items called out in the illustration. Bulk items
are not illustrated.
SMR CODE (Column (2)). The Source, Maintenance and Recoverability (SMR) code is a 5-position code
containing supply/requisitioning information, maintenance category authorization criteria and disposition instruction, as
shown in the following breakout:
How you get an item
Who can install,
Who can do
replace or use
repair* on the
on an unserviceable
*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. Explanation of source codes follows:
Stocked items; use the applicable NSN to request/requisition
items with these source codes. They are authorized to the
category indicated by the code entered in the 3rd position of
the SMR code.
**NOTE: 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 category indicated in the 3rd position of the
SMR code. The complete kit must be requisitioned and applied.