National Stock Number
1660-01-691-8807
National Stock Number (NSN) 1660-01-691-8807, or NIIN 016918807, (heat exchanger,air to air,aircra) was assigned November 4, 2020 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.
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 13 contracts issued for this part number, with 12 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: SPE7L525P1729, SPE4A625PE477, SPE4A625PE477, SPE4A624PD567, SPE4A723PF703. The total value of the awarded contracts has been US$ 287,822.47.
There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries.
This NSN is assigned to Item Name Code (INC) 61419. [A HEAT TRANSFER DEVICE DESIGNED TO LOWER COMPRESSED AIR TEMPERATURE TO AN ACCEPTABLE LEVEL BY PASSING IT THROUGH TUBES AND FLOWING DUCTED RAM AIR OVER THE TUBES, HEAT OF THE COMPRESSED AIR IS TRANSFERRED TO THE RAM AIR REDUCING THE TEMPERATURE. CONSISTS OF A SHEET METAL HOUSING WITH RAM AIR CONNECTION(S) WITH OR WITHOUT DUCTS, A TUBULAR TYPE CORE, INLET AND OUTLET PORTS. MAY CONTAIN A SHUTOFF VALVE. NORMALLY USED IN AIRCRAFT AIR CONDITIONING AND/OR AIR INDUCTION SYSTEMS.]. 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 1660016918807 does not contain precious metals.
This information was last updated on Aug 01, 2025.