TM-9-1200-215-34&P Technical Manual for M109 Automatic Fire Control System (AFCS) Download
Page 176 of 266
TM 9–1200–215–34&P C–5 C–4. EXPLANATION OF COLUMNS (SECTION IV) a. NATIONAL STOCK NUMBER (NSN) INDEX. (1) STOCK NUMBER column. This column lists the NSN by National item identification number (NIIN) sequence. The NIIN consists of the last 9 digits of the NSN. When using this column to locate an item, ignore the first 4 digits of the NSN. However, the complete NSN should be used when ordering items by stock number. (2) PART NUMBER column. Indicates the primary number used by the manufacturer (individual, firm, corporation, or Government activity), which controls the design and characteristics of the item by means of its engineering drawings, specification standards, and inspection requirements to identify an item or range of items. (3) FIG column. This column lists the number of the figure where the item is identified/located. The figures are in numerical order in Section II. (4) ITEM column. The item number identifies the item associated with the figure listed in the adjacent FIG column. This item is also identified by the NSN listed on the same line. b. PART NUMBER INDEX. Part numbers in this index are listed by part number in ascending alphanumeric sequence (i.e., a vertical arrangement of letter and number combinations which places the first letter or digit of each following letter or digit in like order. (1) PART NUMBER column. Indicates the primary number used by the manufacturer (individual, firm, corporation, or Government activity), which controls the design and characteristics of the item by means of its engineering drawings, specification standards, and inspection requirements to identify an item or range of items. (2) STOCK NUMBER column. This column lists the NSN for the associated part number and manufacturer identified in the PART NUMBER and FSCM columns to the left. (3) FIG. column. This column lists the number of the figure where the item is identified/located in Section II. (4) ITEM column. The item number is assigned to the item as it appears in the figure number column. C–5. SPECIAL INFORMATION a. USABLE ON CODE. The usable on code appears in the lower left corner of the Description column heading. Usable on codes are shown on “UOC:………” in the Description Column (justified left) on the first line applicable item description/nomenclature. Uncoded items are applicable to all models. Identification of the usable on codes used in the RPSTL are: Code Used o n Code Used on V31 Power Conditioner Unit V05 PDIU V04 Display Unit V67 VMS Modem CF1 ACU NSN i.e., 5305–01–674–1 146 NIIN