general use. The criteria for determining the type and
quantity of material to be Pre-expended are given in
NAVSUP P-485. The supply officer and the
department head using the items mutually agree on the
specific items to be pre-expended.
Materials that might be pre-expended include nuts
and bolts, solder, gasket material, fuses, and vacuum
Pre-expended bin material should not be confused
with material in custody of other departments. The
latter is carried on stock record cards by supply and
issue documents must be prepared each time an item is
used. Pre-expended bin material has already been
issued and expended from the stock record cards. No
further accountability is required, other than for the
using department to make sure that it is properly used.
The use of pre-expended bin material permits more
realistic reporting. For example, a Machinists Mate is
repairing a pump and must replace a 5/16-18 hex nut.
The unit of issue for the 5/16-18 hex nut is HD
(hundred). Only one nut is used on the pump. Without
pre-expended material, a request for 1 HD nuts must be
submitted with the total material and cost usage being
charged to the pump.
Using pre-expended bin material works equally
well in reducing the volume of issue documents. If the
ETs use a particular tube in several equipments, they
might have an almost daily requirement for this tube in
maintaining those equipments. If each requirement is
submitted on a separate requests, an excessive amount
of paperwork results.
This can be prevented by
submitting one pre-expended bin material request for a
quantity of these tubes and maintaining a small stock in
The responsibility for replenishing pre-expended
bins is determined by the maintenance level of the ship.
Intermediate level (tenders/repair ships)the
SSC is responsible for reviewing and
replenishing pre-expended bins in the various
Organization level (other ships)the using
department or shop is responsible for
maintaining adequate stocks for their own use.
Designating an item as pre-expended material
does not remove the item from supply
storerooms. Supply must still maintain sufficient
stock in their storeroom to meet demands.
Issue documents for pre-expended material are
prepared in the same manner as they are for other issues.
Submitting MDS Documents
After issue documents have been processed by the
stock records Storekeeper, the green copies (of either
NAVSUP Form 1250-1, or DD Form 1348) are sent to
the maintenance office for verification of MDS data
This should be done on a regular schedule and a
checklist kept to show the number of documents sent to
and returned by the maintenance office to prevent loss
of copies. After they have been reviewed and returned,
they are sent to the TYCOM data processing facility.