4. How to Locate Repair Parts.

TM 55-4920-413-13&P Code Application/Explanation g. Unit of Measure (U/M). Indicates the standard of Z --- Nonreparable. No repair is authorized. the basic quantity of the listed item as used in per- forming the actual maintenance function. This measure (3) Recoverability Code. Recoverability codes is expressed by a two-character alphabetical abbrevia- are assigned to support items to indicate the disposi- tion (e.g., ea, in, pr, etc.). When the unit of measure tion action on unserviceable items. The recoverability differs from the unit of issue, the lowest unit of issue code is entered in the fifth position of the Uniform that will satisfy the required units of measure will be SMR Code format as follows: requisitioned. Code Definition Z --- Nonreparable item. When unserviceable, condemn and dispose at the level indicated in position 3. c. National Stock Number. Indicates the National Stock Number assigned to the item and will be used for requisitioning purposes. Note: NSNS have not as yet been assigned to all those items that require them, i.e., all “P” source coded items. Until such time as NSNS are assigned, these parts may be requisitioned by part number and Federal Supply Code for Manu- facturers, or Management Control Number ( MCN ). d. Part Number. Indicates the primary number used by the manufacturer (individual, company, firm, cor- poration, 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. NOTE When a stock numbered item is requi- sitioned, the repair part received may have a different part number than the part being replaced. e. Federal Supply Code for Manufacturer (FSCM), The FSCM is a 5-digit numeric code listed in SB 708- 42 which is used to identify the manufacturer, distrib- utor, or Government agency, etc. f. Description Indicates the Federal item name and any additional description required to identify the item. Basis of Issue ( BOI ) for Special Tools, Ground Support, and Flyaway Equipment. h. Quantity Incorporated in Unit. Indicates the quan- tity of the item required for one assembly only, includ- ing instances when similar assemblies are broken down together. A “ V" appearing in this column in lieu of a quantity indicates that no specific quantity is appli- cable, (e.g., shims, spacers, etc. ). 4. How to Locate Repair Parts. a. When National Stock Number, or Management Control Number, or Part Number is Unknown: (1) First. Find the illustration covering the as- sembly group to which the repair part belongs. (2) Second. Identify the repair part on the illus- tration and note the illustration figure and item num- ber of the repair part. (3) Third. Using the Repair Parts Listing, find the figure and item number noted on the illustration. b. When National Stock Number, or Management Control Number, or Part Number is Known: (1) First. Using the Index of National Stock Numbers or Management Control Numbers and Part Numbers, find the pertinent National Stock Number, Management Control Number or part number. This index is in descending National Item Identification Number (NIIN) sequence followed by a list of part numbers in descending alphanumeric sequence, cross- referenced to the illustrations figure number and item number. (2) Second. After finding the figure and item number, locate the figure and item number in the Repair Parts List. 5. ABBREVIATIONS. (Not Applicable). C-2