National Stock Number
5305-01-258-0031
National Stock Number (NSN) 5305-01-258-0031, or NIIN 012580031, (screw ext relievd b) was assigned June 26, 1987 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN. ISO Group has a strong supply network for this NSN, with 18 sources of supply.
This part number has not been procured by the US Government in over a year. There have been 9 contracts issued for this part number, with 9 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: SPE4A624PS772, SPE4A624PS772, SPE4A621P4637, SPE5E220V3559, SPE5E219V3945. The total value of the awarded contracts has been US$ 7,218.86.
This NSN is very common among different weapons systems, belonging to 29 different platforms.
There has been a moderate 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 Dec 12, 2013, 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) 77777. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5305012580031 does not contain precious metals.
This information was last updated on Jul 01, 2025.