National Stock Number
4820-00-443-9583
National Stock Number (NSN) 4820-00-443-9583, or NIIN 004439583, (diaphragm set,packless valve) was assigned April 4, 1969 in the Federal Logistics Information System (FLIS). NIIN 004439583 was cancelled on August 22, 2002, 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 one supplier. 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.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 61529. [A SET OF TWO OR MORE DIAPHRAGMS, USUALLY COMPOSED OF DISSIMILAR METALS, DESIGNED FOR REPLACEMENT AS A UNIT IN A PACKLESS VALVE.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820004439583 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.