National Stock Number
4820-00-421-1451
National Stock Number (NSN) 4820-00-421-1451, or NIIN 004211451, (port,valve) was assigned March 14, 1969 in the Federal Logistics Information System (FLIS). NIIN 004211451 was cancelled on April 29, 2010, 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 2 suppliers. Today, there are no suppliers 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) 77777. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820004211451 does not contain precious metals.
This information was last updated on Aug 01, 2025.