NOTE TM  10-5410-224-24P 5.  How  to  Locate  Repair  Parts. When   a   stock   numbered   item   is   requisitioned, repair   part   received   may   have   a   different   part number   than   the   part   being   replaced. e Federal   Supply   Code   for   Manufacturer   (FSCM), The   FSCM   is   a   5-digit   numeric   code   listed   in SB708-42   which   is   used   to   identify   the   manufacturer, distributor,   or   Government   agency,   etc. f. Description.   Indicates   the   Federal   item   name and,   if   required,   a   minimum   description   to   identify the   item.   Items   that   are   included   in   kits   and   sets are   listed   below   the   name   of   the   kit   or   set   with   the quantity  of  each  item  in  the  kit  or  set  indicated  in  the quantity  incorporated  in  unit  column.  When  the  part to  be  used  differs  between  serial  numbers  of  the  same model,   the   effective   serial   numbers   are   shown   as   the last   line   of   the   description.   In   the   Special   Tools   List, the  initial  basis  of  issue  (BOI)  appears  as  the  last  line in   the   entry   for   each   special   tool,   TMDE,   and   sup- port   equipment.   When   density   of   equipments   sup- ported   exceeds   density   spread   indicated   in   the   basis of   issue,   the   total   authorization   is   increased   ac- cordingly. g.  Unit  of  Measure  (U/M).  Indicates  the  standard f o  the  basic  quantity  of  the  listed  item  as  used  in  per- forming   the   actual   maintenance   function.   This   mea- sure   is   expressed   by   a   two-character   alphabetical abbreviation   (e.g.,   ea,   in,   pr,   etc.).   When   the   unit of   measure   differs   from   the   unit   of  issue,   the   lowest unit   of   issue   that   will   satisfy   the   required   units   of measure  will  be  requisitioned. h .   Quantity Incorporated   in   Unit.   Indicates   the quantity  of  the  item  used  in  the  breakout  shown  on  the illustration   figure,   which   is   prepared   for   a   functional group,   subfunctional   group,   or   an   assembly.   A   "V" appearing  in  this  column  in  lieu  of  a  quantity  indicates that  no  specific  quantity  is  applicable,  (e.  g.,  shims, spacers,   etc.). 4.   Special   Information. a. Detailed   manufacturing   instructions   for   items source   coded   to   be   manufactured   or   fabricated   are found   in   TM   10-5410-224-14.   Bulk   materials   re- quired   to   manufacturer   items   are   listed   in   the   Bulk Material   Group   of   this   manual. b. Detailed   assembly   instructions   for   items   source coded to be assembled are found in TM 10-5410-224-14. Assembly  components  are  listed  immediately  follow- ing  the  item  to  be  assembled. c. Repair   parts   kit   is   listed   at   the   end   of   the   re- pair   parts   listing. d. The  following  publications  pertain  to  SPAM Shelter   and   its   components: a.    When    National    Stock    Number    or    Part    Number is  unknown: (1)  First.   Using   the   table   of   contents,   deter- mine  the  functional  group  within  which  the  repair  part belongs.   This   is   necessary   since   illustrations   are prepared   for   functional   groups,   and   listings   are   di- vided  into  the  same  groups. (2)  Second.    Find   the   illustration   covering   the functional  group  to  which  the  repair  part  belongs. (3)  T h i r d.    Identify   the   repair   part   on   the   il- lustration   and   note   the   illustration   figure   and   item number   of   the   repair   part. (4)  F o u r t h.    Using   the   Repair   Parts   Listing, find   the   figure   item   number   noted   on   the   illus- tration. b. When   National   Stock   Numbers   and   Part   Number is known: (1)  First.   Using   the   Index   of   National   Stock Numbers   and   Part   Numbers,   find   the   pertinent National   stock   number   or   part   number.   This   index is   in   ascending   NSN   sequence   followed   by   a   list   of part   numbers   in   ascending   alphanumeric   sequence, corss-referenced   to   the   illustration   figure   number and   item   number. (2)   Second. number,   locate   the pair  parts  list. 6.   Abbreviations. Abbreviations AMP AWG CRES DLA ECU HEX ID IN. LG MFD OD P /N THK VAC After   finding   the   figure   and   item figure  and  item  number  in  the  re- Explanation Ampere American   wire   gauge   (wire) Corrosion    resistant    steel Diameter Environmental    control    unit Hexagon Inside   diameter Inch Long Microfarrad Outside   diameter Part  number Thick Volt,   alternating   current TM   10-5410-224-14   Operator,   Organizational Direct  Support  and General   Support Maintenance    Manual v