National Stock Number (NSN) 5310-00-768-0321, or NIIN 007680321, (nut,plain,hexagon) was assigned January 1, 1960 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 2 stock numbers: 5310002085271, 5310002237284.
There are 32 manufacturer part numbers associated with this NSN. 5 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 19 suppliers. Today, 18 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts. ISO Group has a strong supply network for this NSN, with 18 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 28 contracts issued for this part number, with 29 awards given. There is heavy competition for this NSN. The US Government has awarded contracts to 14 different suppliers. The last contract numbers awarded were: SPE4A525FZ11T, SPE7M225V2143, SPE4A625V4459, SPE4A625V4459, SPE4A625V4459. The total value of the awarded contracts has been US$ 352,253.83.
This NSN is very common among different weapons systems, belonging to 249 different platforms.
There has been a moderate amount of demand for this national stock number. Globally, demand for this NSN has originated from 6 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Apr 30, 2019, this NSN's acquisition method was noted as: Not established. Not established.
This NSN is assigned to Item Name Code (INC) 01857. [A NUT, FLAT ON TOP AND BOTTOM HAVING 6 FLAT SIDES. FOR ITEMS WHICH HAVE INTERNAL TAPERED OR STRAIGHT (PARALLEL) PIPE THREADS, SPECIFIC ELECTRICAL CONDUIT SIZE DESIGNATION, AND WHICH WHEN INSTALLED, PROVIDE A METHOD OF TIGHTENING TO LOCK THE CONNECTION, SEE LOCKNUT, ELECTRICAL CONDUIT. SEE ALSO LOCKNUT, TUBE FITTING. FOR ITEMS HAVING A THICKNESS (OR HEIGHT) EXCEEDING TWO TIMES THE WIDTH ACROSS THE FLATS, USE POST, ELECTRICAL-MECHANICAL EQUIPMENT. (WHEN HEIGHT OR THICKNESS AND/OR WIDTH ACROSS THE FLATS IS DESIGNATED AS A TOLERANCE DIMENSION, THE MAXIMUM DIMENSION WILL BE USED TO DETERMINE COMPLIANCE.)]. 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 5310007680321 does not contain precious metals.
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.