After ASO has reviewed and consolidated the report, it is  submitted  to  DLSC  for  screening  for  the  applicable NSN. Upon assignment of the NSN, the superseding NSN is added to the NAC number. The superseded NAC  number  is  deleted  after  two  subsequent  quarters. The NAC number consists of nine digits. The first two digits designated with LX is the NICN. The 3rd and 4th  letters  identify  the  specific  naval  activity.  The reporting  activity  assigns  Arabic  numbers  for  the remaining five digits. Refer to FASOINST 4410.15F for  a  list  of  NAC  designators  and  activities.  The following example is a breakdown of a NAC number: LX-NQ-00001 LX - NQ - 00001   - Navy item control number NAC designator and activity Locally   developed   serial   number for non-NSN item Requisitions  for  NAC-numbered  items  can  be submitted directly to the reporting activity (identified by NAC designator) with an information copy to ASO. This is done when the requiring activity has verified that the material is available for issue. For deployed units, verification  of  material  availability  is  not  required.  The requisition  must  be  in  the  format  described  in FASOINST 4235,36 (series),  Part  Number  Requisition and Follow-ups.  The requisition must include remarks pertinent  to  NAC  number,  date,  and  person  with  whom the  material  availability  was  verified. PART NUMBER The part number, also called reference number, is an identification number assigned to an item by the manufacture.  It  is  made  up  of  letters,  numbers,  or combinations of both. When used with the CAGE code, it identifies the item. It is used with other technical data (for example, model, series, and end-use application) to requisition an item when an NSN is not assigned. Part number   to   NSN   cross-reference   is   provided   in FED-LOG, or any computers that contains C-MCRL information. Requisitioning   procedures   for   part number   requisition   are   described   in   FASOINST 4235.36  (series). COMMERCIAL AND GOVERNMENT ENTITY CODE The  Commercial  And  Government  Entity  (CAGE) Code  replaces  the  Federal  Supply  Code  for Manufacturers  (FSCM).  The  CAGE  is  a  five-digit, numeric code assigned to different types of activities for identification. The CAGE for vendors who supply an item  but  do  not  manufacture  it  is  identified  by  an alphabetic character in the second position; for example, 1B234. Other NATO manufacturers of items used in the U.S.  supply  system  use  CAGE  with  an  alphabetic character in the first position; for example, K7654. The Cataloging  Handbook  H4  provides  a  list  of  CAGE  codes and activity names. CAGE is also listed in the database for FED LOG users. SOURCES OF MATERIAL IDENTIFICATION This  chapter  presents  different  sources  of information  that  is  needed  in  performing  technical research. Material identification does not end with the assignment of the NSN. Some means of identifying other particular needs by the stock number must be provided  to  the  customers.  This  includes  the  means  of determining the correct quantities of these items to carry in  stock.  Identification  of  needs  maybe  determined  by using  the  lists  described  in  the  following  paragraphs. MANAGEMENT   LIST-CONSOLIDATED The Management-List Consolidated (ML-C) is a consolidated,  cumulative  listing  of  National  Stock Numbers for all branches of the armed services. Each NSN is listed one time only. The integrated material manager and service or agency is listed separately. The ML-C is a tool used for determining management data applicable to items used or managed by other military activities.  The  ML-C  information  is  included  in  Navy or   DOD   approved   CD-ROM   technical   research publications. The information provided in the ML-C screen,  when  using  CD-ROM,  is  described  in  the following  text. Service/Agency   Code The   two-character   Service/Agency   (S/A)   code identifies the service, agency, or activity. The codes are DA-Army,   DF-Air   Force,   DM-Marine   Corps, DN-Navy,  DS-Defense  Logistics  Agency,  GP-Coast Guard, TG-General Services Administration. Source of Supply The  Source  of  Supply  (SOS)  column  lists  the routing identifier of the managing activity that is a potential  source  of  supply. 3-11