MIL-STD-1168C
the remaining positions of the three (3) character field shall be filled with hyphens (-), e.g. A--, AB-, etc. Another rare exception is the use of a number in the manufacturer identification symbol such as MA1. This symbol is a part of the ammunition lot number. It is used to identify the manufacturing activity (such as arsenal, plant, depot, station, private contractors, vendors, etc.), which manufactured, assembled, loaded, or regrouped the specific lot of ammunition. It is used in the marking of the ammunition and the ammunition packaging to ensure the accurate control of ammunition, ammunition components, and energetic material during movement, storage, maintenance, issue and receipt transactions. The applicable lot(s) shall not be accepted if the manufacturer's identification symbol is incorrectly applied.
4.2.2 Assi gnment of man ufactur er's identi fic ati on s ymbol s . Unique manufacturer's identification symbols shall be assigned to each manufacturing activity engaged in the manufacture or assembly of ammunition, ammunition components, and energetic materials (see 6.8). Each sustainment activity shall also be assigned a unique manufacturer's identification symbol prior to performance of any rework or maintenance operations (see 6.8). The symbol shall be assigned prior to the start of production and the correct manufacturer's identification symbol shall be used at all times. Different symbols for each plant shall be assigned to those activities that have more than one location producing ammunition items for the Government.
Example:
Aerojet - General Corp., Azusa, CA - symbol "AJA," Aerojet - General Corp., Sacramento, CA - symbol "AJL," Aerojet - General Corp., Fullerton, CA - symbol "AJD,"
Aerojet - General Corp., Solid Rocket Plant, Sacramento, CA - symbol "AJS."
Different symbols shall be assigned for individual facilities when the same manufacturing concern has two or more different facilities, even if they are in the same city. Unless otherwise authorized (see 6.5), these provisions also apply to GOGO facilities or contractors who operate GOCO facilities.
4.2.3 Listing of manufacturers and their identification symbols. Manufacturer's identification symbols are published in MIL-HDBK-1461, titled "Ammunition Manufacturers and Their Symbols." An updated, completely revised handbook will be published periodically. This publication contains any and all symbols previously used by or assigned to a manufacturing activity, load plant, depot, or other type of facility. Manufacturers' identification symbols are also listed in the WARP database and the list is continually updated as changes occur.
4.2.4 C hanges in m anufa cturer's id enti ficati on s ymbol s . Whenever a manufacturer's identification symbol is changed, the next lot, reflecting the change in symbol, shall reset the interfix and sequence numbers to "001." If multiple items of a similar nature are being produced in the facility, then the interfix numbers shall be reset and the product numbered in accordance with the block of interfix procedure described in
4.4.3.1, 4.4.5.1.1, and 4.4.5.1.3.3.
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