0064 00 TM 10-1670-287-23&P Part Number Index. Part numbers in this index are listed by part number in ascending alphanumeric  sequence (i.e., vertical arrangement of letter and number combination which places the first letter or digit  of each group in order A through Z, followed by the numbers 0 through 9, and each following letter or digit  in like order).  HOW TO LOCATE REPAIR PARTS  When National Stock Number or Part Number is Not Known.  1.  First. Using the table of contents, determine the functional group or sub-functional group to which the  item belongs. This is necessary since the figures are prepared for functional groups and sub- functional groups, and listings are divided into the same groups.  2.  Second. Find the item on the figure covering the functional group or sub-functional group to which the  item belongs.  3.  Third. Identify the item on the figure and note the item number of the item.  4.  Fourth. Refer to the Repair Parts List for the figure to find the line item entry for the item number  noted on the figure.  1.  First. Using the Index of National Stock Numbers and Part Numbers, find the pertinent National Stock  Number or part number. The NSN index is in the National Item Identification Number (NIIN)  *sequence. The part numbers in the Part Number index are listed in ascending alphanumeric  sequence. Both indexes cross-reference you to the illustration figure and item number of the item you  are looking for. *The NIIN consists of the last 9 digits of the NSN, as shown above.  When National Stock Number or Part Number is Known.  NSN 5305-01-574-1467 NIIN 0064 00-7  1.  CAGEC column. The Commercial and Government Entity Code is a 5-digit numeric code used to  identify the manufacturer, distributor, or Government agency, etc., that supplies the item.  2.  Part number column. Indicates the primary number used by the manufacturer (individual, firm,  corporation, or Government activity) that controls the design and characteristics of the item by means  of its engineering drawings, specifications, standards, and inspection requirements to identify an item  or range of items.  3.  Stock number column. This column lists the NSN for the associated part number and manufacturer  identified in the part number and CAGEC columns to the left.  4.  Fig. column. This column lists the number of the figure where the item is identified/located.  5.  Item column. The item number is that number assigned to the item as it appears in the figure  referenced in the adjacent figure number column. 