National Stock Number
5310-01-177-4992
National Stock Number (NSN) 5310-01-177-4992, or NIIN 011774992, (nut,self-locking,extended washer,double hexagon) was assigned April 26, 1984 in the Federal Logistics Information System (FLIS). NIIN 011774992 was cancelled on May 2, 2015, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 5310014945830. This NSN replaces 1 stock number, 5310011895884.
There are 9 manufacturer part numbers associated with this NSN. 5 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 6 suppliers. Today, 5 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 3 suppliers 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, with the most recent procurement date of May 23, 2007. There has been one contract issued for this part number, with one award given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPM5AB07V0690, SPM5AB07V0690. The total value of the awarded contracts has been US$ 62,118.00.
This NSN is fairly common among different weapons systems, belonging to 14 different platforms.
There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Dec 12, 2020, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) Acquisition of this part is restricted to source(s) specified on "Source Control", "Altered Item" or "Selected Item" drawings/documents. Valid AMCs: 1, 2, 3, 4 and 5.
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 5310011774992 does not contain precious metals.
This information was last updated on Aug 01, 2025.