National Stock Number
5310-00-321-9613
National Stock Number (NSN) 5310-00-321-9613, or NIIN 003219613, (nut,self-locking,extended washer,double hexagon) was assigned November 21, 1973 in the Federal Logistics Information System (FLIS). NIIN 003219613 was cancelled on July 2, 1999, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 5310011869306. 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.]. This item does not have a critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5310003219613 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.