TM10-5411-200-24P TO35E4-177-4 maintenance art used on an end item u on the   parts   first   appearance   in   this publication. 4. Special Information. a. USABLE ON CODE. The usable on code appears to the right of the Description column heading. Usable  on  codes  are  shown  as "UOC..."    Uncoded items are applicable to all models. Identification of the usable on codes used in this RPSTL are: Used on DPH 60 Amp Shelter ERK 100 Amp Shelter b.   (Army)   Parts   which   require manufacture or assembly at a level higher than  that  authorized  for  installation  will indicate  in  the  source  column,  the  higher level. c.  Stockage  Information. (1)  Air  Force  stocks  e  information  is contained  in  Initial  Supply  Support  Lists issued separately from this publi- cation by Sacramento   Air   Logistics   Center   in accordance with AFM 67-1, part 1, chapter 12. (2) Find the illustration covering the  functional  group  to  which  the  repair part belongs. (3)  Identify  the  repair  part  on  the illustration and note the illustration figure and item number of the repair part. (4)  Using  the  Repair  Parts  Listing, find the figure and item number noted on the illustration. b.   (ALL)   When   national   stock number or reference number is known: (1) Using the Index of National Stock Numbers and Reference Numbers, find the pertinent   national   stock   number   or reference   number. This   index   is   in ascending NSN sequence followed by a list of   reference   numbers   in   alphanumeric sequence, cross-referenced   to   the illustration   figure   number   and   item number. (2)  After  finding  the  figure  and  item number, locate the figure and item number in the repair parts list. 6.  Abbreviations. (2)   Navy   stocks   e   objectives   are contained  in  Consolidated  Shipboard Allowance  List  as  furnished  separately from  this  publication  by  the  Ship  Parts Control  Center. (3)  Marine  Corps  stockage  infor- mation   is   contained   in   Marine   Corps Change  “A”  type  listings  issued  separate from this publication. 5. How to Locate Repair Parts. a.   (ALL)   When   National   Stock Number or reference number is unknown: (1).   Using   the   table   of   contents, determine   the   functional   group:   i.e., batteries  and  related  parts,  exhaust  and breather pipes, within which the repair part belongs. This   is   necessary   since illustrations   are   prepared   for   functional groups,  and  listings  are  divided  into  the same groups. Abbreviations AL ALY AMP AWG DEG DIA EA FR FSCM FT GFI GL IN. LG Explanation alluminum alloy Ampere american  wire gauge countersunk cubic degrees diameter each from manufacturers foot ground fault indicating long quart roll tube 7