MARINE CORPS TM 6115-24P/1
EXPLANATION OF COLUMNS. (cont)
c. Special Stockage Indicator Code and Replacement Factor (Column 3).
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
Indicates that the part may or may not be authorized in
initial allowances to using or supporting organizations, The
manner of determining initial allowances is explained in
paragraph (2) below.
Applied to maintenance parts for which predicted consumption
would not warrant inclusion in Mount-Out, but for which a
quantity of one (1) is authorized as insurance of Mount-Out
using a 360-day criteria.
This criteria is based on the
total density of equipments employed by the DIV/WING TEAM.
so authorized, will be stocked by the
FSR or the MWSG in the case of Marine Wing peculiar
equipment, as applicable.
Applied to maintenance parts that are not considered critical
or essential to be on hand and are, therefore, not authorized
in initial allowances;
these items are stocked
within the Supply System and may be requisitioned based upon
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.
reflects the replacement
assigned to each nationally stock numbered maintenance repair part.
is assigned to the repair part on its first appearance in the publication.
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
All computations are based 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, are 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.