National Stock Number (NSN) 1660-01-326-0509, or NIIN 013260509, (insulation pipe covering,thermal) was assigned September 17, 1990 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 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Aug 02, 2005, 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 Government physically does not have in its possession sufficient, accurate, or legible data to purchase this part from other than current source(s). (NOTE: This code is applicable only to parts under immediate buy requirements and only as long as the deficiency is under review for resolution and appropriate recoding.) Valid AMCs: 1, 2, 3, 4 and 5.
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.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 1660013260509 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 Jul 01, 2025.