TM5-6115-585-24P
NAVFAC P-8-623-24P
TO-35C2-3-455-4
SL-4-05684C/06585B
A
Item requires special handling or condemna-
tion procedure because of specific reasons (i.e.,
precious metal content, high-dollar value,
critical material or hazardous material). Refer to
appropriate manuals/directives for specific in-
structions.
c. (USMC) Special Stockage Indicator Code and
Replacement Factor (Column 3).
(1) Special Stockage Indicator Code. This column
reflects the condition under which certain maintenance
parts, (parts assigned NSNS and coded in the P series
source code of the SMR code), are stocked. The codes are
explained as follows:
No Code
D
T
Indicates that the part may or may not be
authorized in initial allowances to using or
supporting organizations. The manner of deter-
mining initial allowances is explained in
paragraph (2) below.
Applied to maintenance parts that are not
considered critical or essential to be on hand
and are, therefore, not authorized in initial
allowances; however, these items are stocked
within the Supply System and may be re-
quisitioned based upon usage.
Indicates that the part is authorized in garrison
operating allowances in order to comply with
state and local laws; however, the part is not
authorized in Mount-Out since it is not combat
essential.
(2) Replacement Factor. This column reflects the
replacement factor assigned to each nationally stock
numbered maintenance repair part. This factor is assigned
to the repair part on its first appearance in the publications.
The replacement factor, expressed as a decimal, indicates
the average rate at which the type of item so coded has
been used by Marine Corps field units or the rate at which
design engineers anticipate the item will fail, wear out, or
otherwise require replacement. All computations are bas-
ed on a replacement period of one year. Therefore, a
replacement factor of 0.08, applied to an item in this stock
list, indicates that eight out of every one hundred of such
items used in the end item of equipment to which this
publication pertains, is predicted to need replacement in
one year. Likewise, 0.004 reflects that four out of every
thousand in use are predicted to require replacement in
one year, while 2.0 shows that every one in use is predicted
to be replaced twice during each year.
(a) Initial authorized stockage levels of consumable
and salvageable items for an organization are to be
computed for predicted consumption based on the number
of items employed and/or supported by an organization
within the number of days for which stockage is authoriz-
ed. In computing Garrison Operating Stock or Mount-Out,
authorized levels can be determined by the requiring
Marine Corps unit by multiplying the replacement factor
times the quantity used per equipment times the number of
4
end items employed by the using organization or sup-
ported by the service organization times the authorized day
level expressed in and divided by 12. Specific formulas and
examples are provided in Marine Corps Order, MCO
P 4 4 0 0 . 7 9 .
The replacement factors used in initial stockage com-
putations should be revised, if warranted, after significant
usage is experienced in accordance with the guidelines of
MCO 4400.32_. The following formula replacement factor,
X represents actual usage experience (1 year), A
represents the application per equipment, and B
represents the number of equipments supported.
(b) Initial allowances for maintenance float items
(recoverability codes R and D) for the FMF and
appropriate post and stations are as furnished by Initial
Issue Actions.
Changes to maintenance replacement rates resulting
from actual usage may require recomputation of
maintenance float allowances by holding units. Any re-
quired recomputation of maintenance float allowances will
be made in accordance with MCO 4000.6_.
(c) The replacement factor for same as (S/A) items is
indicated upon the first appearance of the item in the major
combination, component or assembly.
d. (ALL) National Stock Number (Column 4) indicates
the National Stock Number assigned to the item and will be
used for requisitioning purposes.
e. (ALL) Description. Indicates the Federal item name
and any additional descriptions of the item required. The
abbreviation w/e when used as part of the nomenclature,
indicates that the National Stock Number includes all
armament, equipment, accessories and repair parts issued
with the item. A part number or other reference number is
followed by the applicable five digit Federal Supply Code
for manufacturer.
If two reference
numbers and Federal Supply Codes for manufacturer are
listed, the first listing refers to the Department of Defense
Drawing Number, the second listing refers to the actual
part manufacturer. Items that are included in kits and sets
are listed below the name of the kit or set
f. (ALL) Unit of Measure (U/M). Indicates the standard
of the basic quantity of the Iisted item as used in performing
the actual maintenance function. This measure is ex-
pressed by a two-character alphabetical abbreviation (e.g.,
ea, in, pr, etc.). When the unit of measure differs from the
unit of issue, the lowest unit of issue that will satisfy the
required units of measure will be requisitioned.
g. (ALL) Quantity Incorporated in Unit. Indicates the
quantity of the item used in the assembly group. A V
appearing in this column in lieu of a quantity indicates that
a definite quantity cannot be indicated (e.g., shims,
spacers, etc.).
h. (MC) Quantity Per Equipment. Indicates the con-
solidated quantity of a maintenance part used on an end
item upon every appearance of the part in this publication.