National Stock Number
5640-01-649-3959
National Stock Number (NSN) 5640-01-649-3959, or NIIN 016493959, (insulation,thermal) was assigned October 28, 2015 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 been procured by the US Government within the last year, but shows no recent (last 90 days) procurement activity. There have been 7 contracts issued for this part number, with 7 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 3 different suppliers. The last contract numbers awarded were: SPE8E625P0392, SPE8E625P0083, SPE8E624P0045, SPE8E623P0760, SPE7L423P1752. The total value of the awarded contracts has been US$ 28,602.20.
There has been a small amount of 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 Oct 29, 2015, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) Acquisition of this part is controlled by QPL procedures. Valid AMCs: 1 and 2.
This NSN is assigned to Item Name Code (INC) 04923. [A LOOSE MASS OF GLASS WOOL, MINERAL WOOL, VEGETABLE FIBERS, OR DIATOMACEOUS EARTH AS ORIGINALLY PROCESSED WITHOUT REGARD TO FORM OR DIMENSIONS, PRIMARILY DESIGNED AS LOOSE FILL FOR OFFERING RESISTANCE TO THE FLOW OF HEAT. DO NOT USE IF A MORE SPECIFIC ITEM NAME EXISTS. EXCLUDES:ELECTRICAL INSULATING COMPOUNDS AND CORK STRIP.]. 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 5640016493959 does not contain precious metals.
This information was last updated on Jul 01, 2025.