National Stock Number
5310-00-163-1915
National Stock Number (NSN) 5310-00-163-1915, or NIIN 001631915, (nut,self-locking,extended washer,double hexagon) was assigned November 13, 1971 in the Federal Logistics Information System (FLIS). NIIN 001631915 was cancelled on December 2, 2018, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 5310006856779. This NSN does not replace any other NSNs.
There are 3 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts. ISO Group has a strong supply network for this NSN, with 13 sources of supply.
This part number has not been procured by the US Government in over 5 years.
There has been very little 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 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 5310001631915 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.