National Stock Number
5325-01-256-5289
National Stock Number (NSN) 5325-01-256-5289, or NIIN 012565289, (lock spring,turnlock fastener) was assigned June 5, 1987 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 4 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
This NSN is fairly common among different weapons systems, belonging to 23 different platforms.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Feb 22, 2019, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government does not have adequate data, lacks rights to data, or both, needed to purchase this part from additional sources. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 18420. [A SPRING-TEMPERED WIRE ITEM USED TO SECURE A STUD, TURNLOCK FASTENER OR STUD ASSEMBLY, TURNLOCK FASTENER BY ENGAGING WITH THE CAMMED GROOVE OF THE STUD, TURNLOCK FASTENER AND SECURING IT BY MEANS OF ITS SPRING ACTION.]. 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 5325012565289 does not contain precious metals.
This information was last updated on Jul 01, 2025.