National Stock Number
5310-01-669-6674
National Stock Number (NSN) 5310-01-669-6674, or NIIN 016696674, (nut,self-locking,extended washer,double hexagon) was assigned January 18, 2018 in the Federal Logistics Information System (FLIS). NIIN 016696674 was cancelled on February 2, 2020, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 5310016696857. This NSN does not replace any other NSNs.
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 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 nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5310016696674 does not contain precious metals.
This information was last updated on Aug 01, 2025.