National Stock Number
6640-00-163-1874
National Stock Number (NSN) 6640-00-163-1874, or NIIN 001631874, (disk,filtering,microporous) was assigned November 3, 1971 in the Federal Logistics Information System (FLIS). NIIN 001631874 was cancelled on March 2, 2005, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 6640000835308. 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 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, there are no suppliers that 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) 30650. [A DEVICE FORMED OF A FILTERING MEDIUM WITH A UNIFORM CELLULAR STRUCTURE DESIGNED TO REMOVE MICROSIZE PARTICULATE MATERIALS FROM AIR OR FLUIDS.]. 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 6640001631874 contains an unknown precious metal.
This information was last updated on Jul 01, 2025.