TM 5-3810-306-24P2. General.- (Continued)c.Section IV. National Stock Number and Part Number Index. A list, in National Item Identification Number (NIIN)sequence, of all national stock numbered items appearing in the listing, followed by a list in alphanumeric sequence of allpart numbers appearing in the listings. National stock numbers and part numbers are cross-referenced to eachillustration figure and item number appearance.3.ExplanationofColumns(SectionsIIandIII).a.ITEMNO,(Column(1)). Indicates the number used to identify items called out in the illustration.b.SMRCODE(Column(2)). The Source, Maintenance, and Recoverability (SMR) code is a 5-position codecontaining supply/requisitioning information, maintenance category authorization criteria, and disposition instruction, asshown in the following breakout:SourceMaintenanceRecoverabilityCodeCodeCode1st twoXXpositionsXXXHow you get an item3rd position4th positionWho determineddispositionWho can install,Who can doaction on anreplace or usecompleteunserviceablethe item.repair*on item.the 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) SourceCode.The source code tells you how to get an item needed for maintenance, repair, or overhaul of anend item/equipment. Explanations of source codes follows:2
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