National Stock Number (NSN) 1660-00-446-3452, or NIIN 004463452, (insulation blanket,thermal,aircr) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 1560014765703.
There are 2 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 suppliers. Today, 3 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 3 suppliers are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years, with the most recent procurement date of Apr 12, 2019. There have been 3 contracts issued for this part number, with 3 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: SPE4A719P9291, SPE4A719P3457, SPM4A712V0073. The total value of the awarded contracts has been US$ 10,277.80.
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 Aug 05, 2017, 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) 51634. [A FLEXIBLE ITEM COMPOSED OF ONE OR MORE KINDS OF FIBERS PREFABRICATED INTO VARIOUS SHAPES AND SIZES. IT MAY HAVE A VAPOR BARRIER AND IS COVERED ON ONE OR BOTH SIDES WITH A JACKET MATERIAL SUCH AS VINYL OR OTHER SHEET MATERIAL. IT MAY HAVE MOUNTING PROVISIONS SUCH AS HOLES OR SNAPS TO FACILITATE INSTALLATION. IT IS DESIGNED TO COVER AIR CONDITIONING, HEATING, COOLING, PRESSURIZING, DE-ICING COMPONENTS AND AIR DUCTS TO PREVENT OR REDUCE THE TRANSFER OF HEAT. EXCLUDES:RIGID AIR DUCT COVERINGS AND INSULATION MATERIAL SUPPLIED IN FLAT SHEETS OR ROLLS. EXCLUDES:INSULATION PIPE COVERING,THERMAL,AIRCRAFT AND INSULATION BLANKET,THERMAL.]. 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 1660004463452 contains an unknown precious metal.
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 Jul 01, 2025.