TM 10-3930-669-34 APPENDIX B EXPENDABLE/DURABLE SUPPLIES AND MATERIALS Section I.  INTRODUCTION B-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. B-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., "Compound, Sealing, Pipe Thread(item 9, 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. B-1