National Stock Number
5640-00-165-5913
National Stock Number (NSN) 5640-00-165-5913, or NIIN 001655913, (insulation felt,thermal) was assigned September 12, 1971 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN. 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.
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 Aug 08, 2006, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) This part requires engineering source approval by the design control activity in order to maintain the quality of the part. An alternate source must qualify in accordance with the design control activity's procedures, as approved by the cognizant Government engineering activity. Valid AMCs: 1, 2, 3, 4 and 5.
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 nuclear hardened feature but does have other critical feature(s) 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 5640001655913 does not contain precious metals.
This NSN is associated to Schedule B 5602903000: felt, whether or not impregnated, coated, covered or laminated: laminated fabrics. The Schedule B End Use is listed as finished textile supplies. NAICS classification category 313230: nonwoven fabric mills.
This information was last updated on Jul 01, 2025.