TM 10-3930-669-20 APPENDIX C EXPENDABLE/DURABLE SUPPLIES AND MATERIALS Section I.  INTRODUCTION C-1.  SCOPE. This  appendix  lists  expendable/durable  supplies  and  materials  you  will  need  to  operate  and  maintain  the  Pumping Assembly.  This listing is for informational purposes only and is not authority to requisition the listed items.  These items are authorized to you by CTA 50-970, Expendable/Durable Items (Except Medical, Class V, Repair Parts, and Heraldic Items), or CTA 8-100, Army Medical Department Expendable/Durable Items. C-2.  EXPLANATION OF COLUMNS. a. Column  (1)  --  Item  Number.    This  number  is  assigned  to  the  entry  in  the  listing  and  is  referenced  in  the narrative instructions to identify the material (e.g., "Use cleaning compound, item 5., Appendix E"). b. Column (2) -- Level.  This column identifies the lowest level of maintenance that requires the listed item. C - Operator/Crew O - Organizational Maintenance F - Direct Support Maintenance H - General Support Maintenance c. Column (3) - National Stock Number.  This is the National Stock Number assigned to the item; use it to request or requisition the item. d. Column (4) - Description.  Indicates the Federal item name, and, if required, a description to identify the item.    The  last  line  for  each  item  indicates  the  part  number  followed  by  Commercial  And  Government  Entity  (CAGE) Code in parentheses. e. Column (5) - Unit of Measure (U/M).    Indicates  the  measure  used  in  performing  the  actual  maintenance function.  This measure is expressed by two-character alphabetical abbreviations (e.g., ea, in, pr).  If the unit of measure differs from the unit of issue, requisition the lowest unit of issue that will satisfy your requirements. C-1