TM 9-2815-250-24&P C-5. SPECIAL INFORMATION (continued). f. Associated Publications. Operators Manual, Unit Maintenance Manual, Direct Support and TM 9-2350-293-10 General Support Maintenance Manual, and Repair Parts and Special TM 9-2350-293-20-1 and -2 Tools List For Carrier, Ammunition, Tracked M992A2 TM 9-2350-293-34 (NSN 2350-01-368-9500) TM 9-2350-293-24P C-6. HOW TO LOCATE REPAIR PARTS. a. When the NSN or part number is not known, you can locate a repair part by following these steps: (1) First.  Using the Table of Contents, determine the assembly group or subassembly group to which the item belongs.    This  is  necessary  because  figures  are  prepared  for  assembly  groups  and  subassembly  groups, and listings are divided into the same groups (2) Second.  Find the figure covering the assembly group or subassembly group to which the item belongs. (3) Third.  Identify the item on the figure and note the item number of the item. (4) Fourth.  Refer to the Repair Parts List for the figure to find the line item entry for the item number noted on the figure. b. When the NSN or part number is known, you can locate a repair part by following these steps: (1) First.    Using  the  National  Stock  Number  Index  or  the  Part  Number  Index,  find  the  pertinent  NSN  or  part number.    The  National  Stock  Number  Index  is  in  NIIN  sequence.    The  part  numbers  in  the  Part  Number Index   are   listed   in   ascending   alphanumeric   sequence   Both   indexes   cross-reference   you   to   the   figure number and the item number of the item you are looking for. (2) Second.    After  finding  the  figure  and  item  numbers,  verify  that  the  item  is  the  one  you're  looking  for;  then locate the item number in the Repair Parts List for the figure. C-7. ABBREVIATIONS. For   standard   abbreviations   see   MIL-STD-12,   Military   Standard   Abbreviations   for   Use   on   Drawings,   Specifications, Standards, and in Technical Documents. C-7