National Stock Number
1660-01-690-9629
National Stock Number (NSN) 1660-01-690-9629, or NIIN 016909629, (heat exchanger,fluid to air) was assigned September 14, 2020 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 51905. [A HEAT TRANSFER DEVICE DESIGNED TO LOWER THE TEMPERATURE OF A FLUID THROUGH AIRFLOW. MAY BE USED IN AIR CONDITIONING SYSTEMS, DRIVE MECHANISMS, AND THE LIKE. SEE ALSO HEAT EXCHANGER, AIR TO AIR, AIRCRAFT AND HEAT EXCHANGER, AIR TO WATER, AIRCRAFT.]. 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 1660016909629 does not contain precious metals.
This NSN is associated to Schedule B 8803300060: other parts of airplanes or helicopters for use in military aircraft (excludes propellers, rotors, undercarriages, and parts thereof). The Schedule B End Use is listed as parts for military-type goods. NAICS classification category 336413: other aircraft parts and auxiliary equipment manufacturing.
This information was last updated on Aug 01, 2025.