3. 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 and requisitioning information, maintenance category authorization criteria, and disposition instruction,
as shown in the following breakout:
How you get an
Who can install,
Who can do
replace or use
*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 or 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
category indicated by the code entered in the 3rd position of the
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.