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 The ML-N is the basic publication relating to NSN management data. It is published in 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 The   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. 7-5 Q4. Which of the following items would require a SMIC? 1. Office supplies 2. Firefighting equipment parts 3. Parts designed for nuclear plants 4. Aircraft engine parts REVIEW QUESTION