TM 9-2815-250-24&P APPENDIX F MANDATORY REPLACEMENT PARTS Paragraph Page Number Paragraph Title Number F-1 General............................................................................................................................... F-1 F-2 Explanation of Columns  ....................................................................................................... F-1 Table F-1 Mandatory Replacement Parts List ....................................................................................... F-2 F-1.  GENERAL. This appendix is a cross-reference of item numbers to part numbers and is included for that purpose only. F-2.  EXPLANATION OF COLUMNS . There are five columns in Table F-1, Mandatory Replacement Parts List (p. F-2): (1) Item Number.  This number is assigned to the entry in Table F-1 for cross-referencing to the part number. The item number appears in the Materials/Parts listing of a maintenance procedure. (2) Part  Number.    This  is  the  primary  number  used  by  the  manufacturer,  which  controls  the  design  and characteristics  of  the  item  by  means  of  its  engineering  drawings,  specifications,  standards,  and  inspection requirements to identify an item or a range of items. (3) National Stock Number.  When available, the national stock number is listed for each part. (4) Item Name.  This is the name given each item in the Materials/Parts listing of a maintenance procedure. (5) Reference.    This  is  the  Repair  Parts  and  Special  Tools  List  (RPSTL)  appendix  in  which  the  referenced replacement part can be found.  The RPSTL is the authorization for requisitioning replacement parts. F-1