National Stock Number (NSN) 5310-01-126-2711, or NIIN 011262711, (nut,self-locking,extended washer) was assigned February 9, 1982 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 7 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 8 suppliers. Today, 7 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 5 suppliers are deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.
This part number has been procured by the US Government within the last year, but shows no recent (last 90 days) procurement activity. There have been 30 contracts issued for this part number, with 39 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 5 different suppliers. The last contract numbers awarded were: SPE4A625V090Z, SPE4A625V090Z, SPE4A725P5862, SPE4A524V2831, SPE4A124V0386. The total value of the awarded contracts has been US$ 73,247.28.
This NSN is somewhat common among different platforms, belonging to 7 different weapons systems.
There has been a small amount of 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 Apr 02, 2006, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) This part requires engineering source approval by the design control activity in order to maintain the quality of the part. An alternate source must qualify in accordance with the design control activity's procedures, as approved by the cognizant Government engineering activity. 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 5310011262711 does not contain precious metals.
This NSN is associated to Schedule B 7508900000: other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire). The Schedule B End Use is listed as finished metal shapes. NAICS classification category 332999: all other miscellaneous fabricated metal product manufacturing.
This information was last updated on Jul 01, 2025.