National Stock Number
5640-00-226-4540
National Stock Number (NSN) 5640-00-226-4540, or NIIN 002264540, (cement,insulation,high temperatu) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 3 stock numbers: 5640002459538, 5640009894042, 5640001120210.
There are 6 manufacturer part numbers associated with this NSN. 5 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, one supplier is 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. ISO Group has several sources of supply for 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.
There has been very little 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 Jun 02, 1994, this NSN's acquisition method was noted as: Not established. Not established.
This NSN is assigned to Item Name Code (INC) 16941. [A MIXTURE OF REFRACTORY MATERIAL (DIATOMACEOUS EARTH, EXFOLIATED MICA, ROCK OR MINERAL WOOL AND THE LIKE) ASBESTOS FIBERS, AND CLAY BINDER USED FOR INSULATING HIGH TEMPERATURE WORK, PIPING, TANKS, AND GENERAL USE.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. Information is in the Hazardous Materials Information Resource System (HMIRS). NSN 5640002264540 does not contain precious metals.
This NSN is associated to Schedule B 3816000010: refractory cements, mortars, concretes and similar compositions of clay other than products of heading 3801. The Schedule B End Use is listed as mineral supplies-manufactured.
This information was last updated on Aug 01, 2025.