National Stock Number
5310-99-352-7918
National Stock Number (NSN) 5310-99-352-7918, or NIIN 993527918, (nut,self-locking,extended washer,double hexagon) has an unknown assigned date. This NSN replaces 1 stock number, 5310013544647.
There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.
This part number has not been procured by the US Government in over a year. There have been 26 contracts issued for this part number, with 26 awards given. There is heavy competition for this NSN. The US Government has awarded contracts to 12 different suppliers. The last contract numbers awarded were: SPE4A624PG884, SPE5EC20P0366, SPE4A620P9936, SPE5EC20P0207, SPE5EC20P0207. The total value of the awarded contracts has been US$ 617,285.83.
This NSN is somewhat common among different platforms, belonging to 4 different weapons systems.
There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries.
This NSN is assigned to Item Name Code (INC) 29729. [A NUT HAVING 12 DRIVE POINTS, 24 SIDES, AND AN INTEGRAL WASHER WHICH EXTENDS BEYOND THE POINTS OR PERIPHERY. AN INTEGRAL FEATURE IS INCORPORATED FOR LOCKING ON THE THREADS OF A MATING MEMBER.].
This information was last updated on Oct 10, 2025.