National Stock Number
1660-99-783-6601
National Stock Number (NSN) 1660-99-783-6601, or NIIN 997836601, (insulation pipe covering,thermal,aircraft) has an unknown assigned date. This NSN replaces 1 stock number, 1660011849845.
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, with the most recent procurement date of Jun 23, 2009. There has been one contract issued for this part number, with one award given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPRPA109G003X. The total value of the awarded contracts has been US$ 15,761.25.
This NSN is unique to one weapons system.
This NSN is assigned to Item Name Code (INC) 51593. [AN ITEM COMPOSED OF ONE OR MORE MATERIALS, MOLDED, COMPRESSED, AND/OR BAKED INTO A RIGID COVERING OF IRREGULAR SHAPES AND SIZES. IT IS DESIGNED TO COVER AIR DUCTS AND/OR AIR DUCT FITTINGS USED IN AIR CONDITIONING, HEATING, COOLING, PRESSURIZING, DE-ICING SYSTEMS AND IN HYDRAULIC SYSTEMS TO RESTRICT THE DISSIPATION OF HEAT. IT MAY COMPLETELY OR PARTIALLY ENCASE THE ITEM FOR WHICH DESIGNED. IT MAY BE FURNISHED WITH OR WITHOUT FILLERS, CEMENT, AND/OR SEPARATE OR ATTACHED ACCESSORIES FOR INSTALLATION, (EXCLUDING FLEXIBLE AIR DUCT COVERING AND RIGID PIPE AND PIPE FITTING COVERINGS USED IN CONSTRUCTION AND BUILDING MATERIALS). EXCLUDES:INSULATION BLANKET,THERMAL,AIRCRAFT; INSULATION PIPE FITTING COVERING,THERMAL; AND INSULATION SLEEVING,THERMAL.].
This information was last updated on Feb 02, 2026.