National Stock Number
4820-00-348-5577
National Stock Number (NSN) 4820-00-348-5577, or NIIN 003485577, (seat,valve) was assigned December 5, 2007 in the Federal Logistics Information System (FLIS). NIIN 003485577 was cancelled on December 7, 2007, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 4820013615895. This NSN does not replace any other NSNs.
There are 3 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is 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) 22113. [A REPLACEABLE ITEM DESIGNED TO PROVIDE A STATIONARY SEATING SURFACE FOR A MATING, MOVEABLE ITEM SUCH AS A VALVE DISK OR THE LIKE. THE BODY MAY HAVE A FLANGE OF VARIOUS SHAPES. FOR DIESEL AND GASOLINE RECIPROCATING ENGINES, SEE INSERT, ENGINE VALVE SEAT.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820003485577 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.