National Stock Number
5640-01-375-8935
National Stock Number (NSN) 5640-01-375-8935, or NIIN 013758935, (insulation felt,thermal) was assigned May 23, 1993 in the Federal Logistics Information System (FLIS). NIIN 013758935 was cancelled on December 15, 2017, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. 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 3 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.
This NSN is assigned to Item Name Code (INC) 20232. [A FLEXIBLE OR SEMIRIGID MATERIAL COMPOSED OF ONE OR MORE KINDS OF FIBER WITH AN ADDED BINDER, SUPPLIED IN FLAT SHEETS OR ROLLS. IT IS DESIGNED TO OFFER RESISTANCE TO THE FLOW OF HEAT, AND MUST BE RATED FOR THIS USE. FOR FELTED INSULATION WITH PAPER OR OTHER SHEET MATERIAL AFFIXED TO ONE OR BOTH SIDES, SEE INSULATION BLANKET, THERMAL. EXCLUDES:FELT SHEET AND FELT STRIP.]. This item does not have a critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). 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 5640013758935 does not contain precious metals.
This information was last updated on Jul 01, 2025.