TM 10-3530-203-20P Code Explanation R Repair  parts  and  assemblies  which  are economically    reparable    at    DSU    and GSU activities and are normally furnished   by   supply   on   an   exchange basis. S Repair  parts  and  assemblies  which  are economically    reparable    at    DSU    and GSU  activities  and  which  are  normally furnished   by   supply   on   an   exchange basis  When  items  are  determined  by  a GSU   to   be   uneconomically   reparable, they   will   be   evacuated   to   a   depot   for evaluation     and     analysis     before     final disposition. T High    dollar    value    recoverable    repair parts     which     are     subject     to     special handling and are issued on an exchange basis   Such   repair   parts   normally   are repaired or overhauled at depot maintenance activities U Repair    parts    specifically    selected    for salvage by reclamation units because of precious metal content, critical materials,  or  high  dollar  value  reusable casings or castings. b. Federal Stock Number. This column indicates the  Federal  stock  number  assigned  to  the  item  and  will be used for requisitioning purposes. c. Description. This column indicates the Federal item  name   and   any   additional   description   of   the   item required. Assembly components and subassemblies are indented    under    major    assemblies.    The    abbreviation "w/e", when used as part of the nomenclature, indicates the    Federal    stock    number    includes    all    armament, equipment, accessories, and repair parts issued with the item.    A    part    number    or    other    reference    number    is followed by the applicable five-digit Federal  supply  code for manufacturers in parenthesis. Repair parts quantities included in kits and sets are shown in front of the repair part     name. Material required for manufacture or fabrication is identified. d.    Unit    of    Measure    (U/M).    A    two-character alphabetic abbreviation indicating the amount or quantity of the item upon which the allowances are based, e.g., ft, ea., pr, etc. e.   Quantity   Incorporated   in   Unit.   This   column indicates  the  quantity  of  the  item  used  in  the  assembly group. A "V" appearing in this column in lieu of a quantity indicates   that   a   definite   quantity   cannot   be   indicated (e.g., shims, spacers, etc.). f. Fifteen-Day Organizational Maintenance Allowance. (1)  The  allowance  columns  are  divided  into four  subcolumn.  Indicated  in  each  subcolumn  opposite the first appearance of each  item  is  the  total  quantity  of items authorized for the number of equipment supported. Subsequent appearances of the same item will have the letters   "REF"   in   the   applicable   allowance   column.   To locate  the  referenced  item,  locate  the  FSN  or  reference number in the index. The earliest figure and item number is   the   referenced   item.   Items   authorized   for   use   as required but not for initial stockage are identified with an asterisk in the allowance column. (2) The quantitative allowance for organizational level of maintenance represents one initial prescribed  load  for  a  15day  period  for  the  number  of equipment supported. Units authorized additional prescribed   loads,   multiply   the   number    of    prescribed loads by the quantity in the appropriate density column to determine the number of repair parts authorized. (3) To determine allowances when supporting   more   than   100   of   these   equipment:   First, divide  the  number  of  equipments  supported  by  100  by moving the decimal two spaces left; second, multiply the result   by   the   quantity   in   the   51-100   density   column. Example,  authorized  allowance  for  51-100  equipment  is 40;  for  150  equipments,  multiply  40  by  1.50  or  60  parts authorized (4)  Subsequent  changes  to  allowances  will be limited as follows: No change in the range of items is authorized. If additional items are considered necessary, recommendation   should   be   forwarded   to   U.   S.   Army Mobility  Equipment  Command  for  exception  or  revision to  the  allowance  list.  Revisions  to  the  range  of  items authorized   will   be   made   by   the   U.   S.   Army   Mobility Equipment Command based upon engineering experience, demand data, or TAERS information. g. Illustration. This column is divided as follows: (1)    Figure    number.    Indicates    the    figure number of the illustration in which the item is shown. (2)     Item     number.     Indicates     the     callout number used to reference the item In the illustration. 4. Special Information a. Identifications of the usable on codes included in the description columns of this publication are: iv