TM 55-1680-358-12&P
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)
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.
(3)
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., 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).
(1)
FSCM column. The Federal Supply Code for Manufacturer (FSCM) 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), which 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 FSCM columns to the left.
(4)
FIG. column. This column lists the number of the figure where the item is identified/located in Section II.
(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.
5. Special Information. Not applicable.
6. How to Locate Repair Parts
a.
When National Stock Number or Part Number is Not Known.
(1)
First. Using the table of contents, determine the assembly group or subassembly group to which the item
belongs. This is necessary since figures are prepared for assembly groups and subassembly groups, and listings are
divided into the same groups.
(2)
Second. Find the figure covering the assembly group or subassembly group to which the item belongs.
(3)
Third. Identify the item on the figure and note the item number.
C-4
