National Stock Number
1660-00-346-4058
National Stock Number (NSN) 1660-00-346-4058, or NIIN 003464058, (impeller wheel,aircraft cooling) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier 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 been procured by the US Government within the last year, but shows no recent (last 90 days) procurement activity. There have been 6 contracts issued for this part number, with 15 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 3 different suppliers. The last contract numbers awarded were: SPE4A625PV728, SPE4A625PV847, SPE4A625V3799, SPE4A625V3799, SPE4A524P8570. The total value of the awarded contracts has been US$ 1,156,397.06.
This NSN is somewhat common among different platforms, belonging to 6 different weapons systems.
There has been a small 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 Jul 02, 2006, 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 rights to use the data needed to purchase this part from additional sources are not owned by the Government and cannot be purchased. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 61421. [AN ITEM CONSISTING OF BLADES, VANES OR PADDLES EQUALLY SPACED AROUND THE PERIPHERY OR FACE OF A HUB, ROTOR OR WHEEL. IT IS TURBINE WHEEL OR SHAFT DRIVEN. DESIGNED PRIMARILY AS A MEANS FOR ABSORBING THE ENERGY AND TO ACT AS A GOVERNING FORCE FOR A TURBINE WHEEL. ALSO AIDS IN DRAWING RAM AIR THROUGH A HEAT EXCHANGER. MAY BE USED TO COMPRESS THE AIR REQUIRED TO DRIVE THE TURBINE WHEEL. IT IS A ROTATING PART OF AN AIRCRAFT COOLING TURBINE.]. 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 1660003464058 does not contain precious metals.
This information was last updated on Aug 01, 2025.