National Stock Number
5310-00-520-2816
National Stock Number (NSN) 5310-00-520-2816, or NIIN 005202816, (nut,self-locking,extended washer,double hexagon) was assigned June 20, 1969 in the Federal Logistics Information System (FLIS). NIIN 005202816 was cancelled on July 2, 1997, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 5310001068861. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN. ISO Group has several sources of supply for 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) 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.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5310005202816 contains silver.
This information was last updated on Aug 01, 2025.