DLMS™ Summary National Stock Number 1015-12-138-5011 National Stock Number (NSN) 1015-12-138-5011, or NIIN 121385011, (spring,special) has an unknown assigned date. This NSN replaces 1 stock number, 1015014590749. 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 assigned to Item Name Code (INC) 77777. This information was last updated on Oct 24, 2016.