National Stock Number
5640-99-192-0932
National Stock Number (NSN) 5640-99-192-0932, or NIIN 991920932, (insulation pipe covering,thermal,special purpose) has an unknown assigned date. This NSN does not replace any other NSNs.
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 one supplier. Today, there are no suppliers listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
This NSN is unique to one weapons system.
This NSN is assigned to Item Name Code (INC) 61649. [INC 61649 CANCELLED/REPLACED BY ,INC 51593, FIIG A016A0, APP-KEY B ,ON 060508 ~INC 61649 CANCELLED/REPLACED BY ,INC 51593, FIIG A016A0, APP-KEY B , ON 061995 AN ITEM COMPOSED OF ONE OR MORE MATERIALS, MOLDED, COMPRESSED, AND/OR BAKED INTO A RIGID COVERING OF IRREGULAR SHAPE AND/OR SIZE. IT IS DESIGNED TO COVER PIPES (AIRDUCTS) 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. DO NOT USE IF A MORE SPECIFIC ITEM NAME APPLIES. SEE ALSO INSULATION SLEEVING, THERMAL.].
This information was last updated on Aug 06, 2025.