DLMS™ Summary National Stock Number 1015-15-056-2523 National Stock Number (NSN) 1015-15-056-2523, or NIIN 150562523, (ring,special) has an unknown assigned date. This NSN replaces 1 stock number, 5330012252636. There are no manufacturer part numbers associated to this NSN. This part number has not been procured by the US Government in over 5 years. This NSN is somewhat common among different platforms, belonging to 3 different weapons systems. This NSN is assigned to Item Name Code (INC) 77777. This information was last updated on Jan 16, 2017.