National Stock Number (NSN) 5310-00-243-2259, or NIIN 002432259, (washer,split) was assigned November 2, 1970 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 5 stock numbers: 5310009432469, 5310010328232, 5310002747369, 5365004114457, 5310005988345.
There are 39 manufacturer part numbers associated with this NSN. 9 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 42 suppliers. Today, 37 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 23 suppliers are deemed design controlled or valid supply parts. ISO Group has a strong supply network for this NSN, with 25 sources of supply.
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 20 contracts issued for this part number, with 20 awards given. There is heavy competition for this NSN. The US Government has awarded contracts to 11 different suppliers. The last contract numbers awarded were: SPE4A625F6175, SPE4A625F6175, SPE4A625F0203, SPE4A625F0203, SPE4A625F0203. The total value of the awarded contracts has been US$ 63,368.84.
This NSN is very common among different weapons systems, belonging to 123 different platforms.
There has been a moderate amount of demand for this national stock number. Globally, demand for this NSN has originated from 8 countries. The 24 month forecast from the US Government for this part number has high volatility, with an estimated forecasted value of US$ 7,066. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Sep 18, 2018, 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) 15937. [A WASHER, ROUND IN SHAPE, AND HAVING A CENTRALLY LOCATED HOLE. ITS TWO FLAT PARALLEL BEARING SURFACES ARE DIVIDED OR CUT ALONG THE RADIUS, LEAVING A CLEFT, FISSURE, OR CUTAWAY PORTION ACROSS THE RIM WHCH EXTENDS FROM THE OUTER CIRCUMFERENCE TO THE WASHER HOLE BUT WHICH IS NEVER AS LARGE AS THE WASHER HOLE DIAMETER. EXCLUDES:WASHER (1), LOCK.]. 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 5310002432259 does not contain precious metals.
This NSN is associated to Schedule B 7318210000: spring washers and other lock washers, 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 Jun 01, 2025.