National Stock Number
5310-00-127-5691
National Stock Number (NSN) 5310-00-127-5691, or NIIN 001275691, (nut,self-locking,extended washer,double hexagon) was assigned January 4, 1973 in the Federal Logistics Information System (FLIS). NIIN 001275691 was cancelled on March 2, 1996, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 5310011050976. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to 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 5310001275691 does not contain precious metals.
This information was last updated on Jul 01, 2025.