National Stock Number
5640-01-323-2591
National Stock Number (NSN) 2990-01-323-2591, or NIIN 013232591, (heat shield,exhaust) was assigned July 25, 1990 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers associated with this NSN. One 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, only one supplier is deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.
This part number has not been procured by the US Government in over a year. There have been 2 contracts issued for this part number, with 2 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 2 different suppliers. The last contract numbers awarded were: SPE7L124FA6FK, SPE7L019P0375. The total value of the awarded contracts has been US$ 1,792.20.
This NSN is unique to one weapons system.
There has been very little 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 Nov 02, 2018, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The data needed to produce this item from additional sources is not physically available. Valid AMCs: 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 51079. [A METALLIC ITEM DESIGNED TO RESTRICT AND/OR DEFLECT THE HEAT RADIATED BY AN EXHAUST SYSTEM. SEE ALSO GUARD,MUFFLER-EXHAUST PIPE,AIRCRAFT AND GUARD,MUFFLER-EXHAUST PIPE,NONAIRCRAFT.]. 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 2990013232591 does not contain precious metals.
This NSN is associated to Schedule B 8708928000: parts and accessories, for mufflers. The Schedule B End Use is listed as other parts and accessories of vehicles.
This information was last updated on Jul 01, 2025.