SPECIAL INFORMATION - TM-9-4520-251-24P0015

TM 9-4520-251-24P

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 Goverment 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) ST0CK NUMBER column. This column lists the NSN for the associated part number and

manufacturer identified m 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

Sections II and III.

(5) lTEM column. The item number is that number assigned to the item as it appears in the figure

referenced in adjacent figure number column.

5. SPECIAL INFORMATION. Use the following subparagraphs as applicable:

a. USABLE ON CODE. The usable on code appears in the lower left corner of the Description column

heading. Usable on codes are shown"UOC: . . . . ." in the Description Column (justified left) on the first line

applicable item description/nomenclature. Uncoded items are applicable to all models.

b. ASSOCIATED PUBLICATIONS. The publication listed below pertains to the 400,000 BTU Heater and its

components.

Short Title

Publication

Heater, Duct Type, Portable, Trailer Mounted, 400,000 BTU/HR

TM 5-4520-251-14

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 the item number.

(4) Fourth. Refer to the Repair Parts List for the figure to find the part number for the item number

noted on the figure.

(5) Fifth. Refer to the Part Number Index to find the NSN, if assigned.