National Stock Number (NSN) 5310-00-961-8390, or NIIN 009618390, (nut,self-locking,slotted,hexagon) was assigned January 1, 1962 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 8 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 10 suppliers. Today, 9 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 4 suppliers are deemed design controlled or valid supply parts. ISO Group has built a very strong supply chain for this NSN. We have direct relationships with 27 sources of supply.
This part number is actively being procured by the US Government, with procurement history within the last 90 days. There have been 58 contracts issued for this part number, with 84 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: SPEHA625F1236, SPEHA625F1236, SPEHA625F1236, SPEHA625F1149, SPEHA625F1149. The total value of the awarded contracts has been US$ 664,966.95.
This NSN is very common among different weapons systems, belonging to 87 different platforms.
There has been a moderate amount of demand for this national stock number. Globally, demand for this NSN has originated from 21 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jul 01, 2011, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.
This NSN is assigned to Item Name Code (INC) 29733. [A NUT HAVING A FLAT BEARING SURFACE AND 6 FLAT SIDES WITH SLOTS IN ITS UPPER PORTION. AN INTEGRAL FEATURE IS INCORPORATED FOR LOCKING ON THE THREADS OF A MATING MEMBER. THE SLOTS, WHEN USED IN CONJUNCTION WITH A SOLID OR SPLIT (COTTER) PIN, ACT AS AN EXTRA "FAIL SAFE", FEATURE IN CRITICAL APPLICATIONS. EXCLUDES:NUT (1), SELF-LOCKING, CASTELLATED, OCTAGON.]. 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 5310009618390 contains an unknown precious metal.
This NSN is associated to Schedule B 7318160000: nuts of iron or steel. The Schedule B End Use is listed as finished metal shapes. NAICS classification category 332722: bolt, nut, screw, rivet, and washer manufacturing.
This information was last updated on Jul 01, 2025.