National Stock Number
5640-00-255-7985
National Stock Number (NSN) 5640-00-255-7985, or NIIN 002557985, (insulation board,thermal) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). NIIN 002557985 was cancelled on April 29, 2010, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. This NSN replaces 1 stock number, 5640005303661.
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 unique to one weapons system.
This NSN is assigned to Item Name Code (INC) 15118. [AN ITEM IDENTICAL IN CONSTRUCTION TO INSULATION BLOCK, THERMAL EXCEPT THAT IT IS SUPPLIED IN LENGTHS GREATER THAN 36 INCHES (914.4 MM). EXCLUDES:BUILDING BOARD (AS MODIFIED). MILLBOARD, ASBESTOS; ASBESTOS SHEET, COMPRESSED; CORK SHEET; CORK AND RUBBERSHEET; AND FIBERBOARD (AS MODIFIED). SEE ALSO 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 information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 5640002557985 does not contain precious metals.
This information was last updated on Aug 01, 2025.