Explanation of Columns - TM-5-4120-270-20P0004

the first appearance of each item is the total quantity of

Code

Explanation

items authorized for the number of equipments

AR 710-50. When so listed, they will be

supported. Subsequent appearances of the same item

replaced by supply on an exchange basis.

will have the letters "REF" in the allowance column. To

Repair Parts, Special Tools, Test Equipment

locate the referenced item, locate the FSN or reference

and assemblies which are economically

number in the index. The earliest figure and item

reparable at DSU and GSU activities and

number is the referenced item. Items authorized for use

which normally are furnished by supply on

as required but not for initial stockage are identified with

an exchange basis.

When items are

an asterisk in the allowance column.

determined by a GSU to be uneconomically

reparable, they will be evacuated to a depot

(2) The

quantitative

allowance

for

for evaluation and analysis before final

organizational level of maintenance represents one

disposition.

initial prescribed load for a 15-day period for the number

Higher dollar value recoverable repair parts,

of equipments supported. Units authorized additional

special tools and test equipment which are

prescribed loads, multiply the number of prescribed

subject to special handling and are issued

loads by the quantity in the appropriate density column

on an exchange basis. Such items will be

to determine the number of repair parts authorized.

repaired

overhauled

depot

(3) To determine allowances when supporting

maintenance activities only. No repair may

more than 100 of these equipments: First, divide the

be accomplished at lower levels.

number of equipments supported by 100 by moving the

Repair Parts, Special Tools and Test

decimal two spaces left; second, multiply the result by

Equipment specifically selected for salvage

the quantity in the 51-100 density column. Example,

by reclamation units because of precious

authorized allowance for 51-100 equipment is 40; for

metal content, critical materials, high dollar

150 equipments, multiply 40 by 1.50 or 60 parts

value or reusable casings or castings.

authorized.

b. Federal Stock Number. This column indicates

(4) Subsequent changes to allowances will be

the Federal stock number assigned to the item and will

limited as follows: No change in the range of items is

be used for requisitioning purposes.

authorized.

If additional items are considered

c. Description. This column indicates the Federal

necessary, recommendations should be forwarded to

item name and any additional description of the item

U.S. Army Mobility Equipment Command for exception

required. Assembly components and subassemblies are

or revision to the allowance list. Revisions to the range

indented under major assemblies. The abbreviation

of items authorized will be made by the U.S. Army

"w/e", when used as part of the nomenclature, indicates

Mobility Equipment Command based upon engineering

the Federal stock number includes all armament,

experience, demand data, or TAERS information.

equipment, accessories, and repair parts issued with the

g. Illustration. This column is divided as follows:

item. A part number or other reference number is

(1) Figure number.

Indicates the figure

followed by the applicable five-digit Federal supply code

number of the illustration in which the item is shown.

for manufacturers in parenthesis.

Repair parts

(2) Item number.

Indicates the callout

quantities included in kits and sets are shown in front of

number used to reference the item in the illustration.

the repair part name. Material required for manufacture

4. Special Information

or fabrication is identified.

a. Identifications of the usable on codes included

d. Unit of Measure (U/M).

A two-character

in the description columns of this publication are:

alphabetic abbreviation indicating the amount or

(Applicable only when identifying parts to particular

quantity of the item upon which the allowances are

serial number range or model).

based, e.g., ft, ea, pr, etc.

Code

Used on

e. Quantity Incorporated in Unit. This column

A ......... MAC6V60-360-2

indicates the quantity of the item used in the assembly

B ........ MAC4V60-360-3

group. A "V" appearing in this column in lieu of a

Items with no usable on code listed in the description

quantity indicates that a definite quantity cannot be

column are applicable to all models.

indicated (e.g., shims, spacers, etc.).

b. Repair parts mortality has been based on 7200

f. Fifteen-Day

Organizational

Maintenance

hours of operation per year.

Allowance.

c. Parts which require manufacture or assembly at

(1) The allowance columns are divided into

a category higher than that authorized for installation will

four subcolumns. Indicated in each subcolumn opposite

indicate in the source column the higher category.