7-5 appear on all vouchers, records, custody cards, and survey reports. Nameplates Material identification, particularly of portable and installed  equipment,  is  made  easier  by  referring  to nameplates attached to the equipment. Nameplate data includes the manufacturer’s name and the equipment make or model number, serial number, size, voltage, and the like. Drawing Numbers Certain technical material may be identified only by a drawing or sketch number. These numbers may be assigned by the manufacturer, controlling bureau, or systems   command.   When   you   are   requisitioning nonstandard  items,  be  sure  to  include  the  drawing number, if available, to aid in positive identification. Markings Various items of electronic equipment are identified by joint electronics-type designations (JETDs) nomenclature (for example, AN/UYK-7[V]). They are also identified by Navy type or model number and manufacturer’s model number, as well as stock number and serial number. Contractors’ Service Bulletins Contractors’  service bulletins include contractors’ recommendations for modifying or repairing specific equipment. They cover a wide range of equipment and usually contain part numbers, nomenclature, and names of manufacturers. SUPPLY PUBLICATIONS When you turn in a requisition for supplies, you set in motion a long chain of events involving movement of materials, maintaining stock records, and procurement actions.  Because  of  this  chain  of  events,  you  (the requisitioner)  must  supply  accurate  information  to ensure prompt results from the requisition. The Management List-Navy (ML-N) and several related publications provide you with information for submitting  accurate  and  error-free  requisitions.  The Federal Logistics Data (FEDLOG), NAVSUP P-2002, or the Naval Logistics Library available on compact disk  (CD),  describes  the  format  and  use  of  these publications. The supply department is the primary user of these publications. However, as a division supply petty officer, you may have an occasional need for information contained in them. For that reason, the following short descriptions of these publications is provided. Management List-Navy (ML-N) The Management List-Navy (ML-N) is the basic publication relating to national stock number (NSN) management  data.  It  is  published  in  national  item identification number (NIIN) sequence and includes only items  for  which  Navy  interest  has  been  recorded. Although it includes ammunition items, you still must use the Catalog of Navy Ammunition Stock, NAVSEA OD   12067/NAVAIR   11-1-116,   for   ordering   and reporting items of ammunition. The ML-N omits subsistence items, such as food. The source for subsistence items is the book edition of the Federal Catalog for Subsistence compiled by the Defense Personnel  Support  Center.  The  ML-N  also omits cryptographic, cryptologic, and defense nuclear items, which are listed in security classified catalogs produced by the respective DoD agencies. The ML-N is a Navy-tailored publication; therefore, many  NSNs  may  be  located  in  the  Master  Cross- Reference List (MCRL) that will not be found in the ML- N. If the item being researched is not found in the ML-N (including deleted items) and a continuing requirement exists, the using activity must take the necessary action to establish Navy interest in procuring that item. Figure 7-3 shows the format of the ML-N. Table 7-1 lists the contents of the ML-N. For definitions  and  explanations  of  the  various codes  used  in  the  columns  of  the  ML-N,  refer  to FEDLOG, NAVSUP P-2002. Master Cross-Reference List (MCRL) The Master Cross-Reference List (MCRL), Part I (fig. 7-4), provides a cross-reference from a reference number (manufacturer’s part number, drawing number, design control number, etc.) to its assigned NSN. The MCRL, Part II (fig. 7-5), provides a cross-reference from an NSN to a reference number.