National Stock Number
4820-01-270-9402
National Stock Number (NSN) 4820-01-270-9402, or NIIN 012709402, (seat,valve) was assigned January 15, 1988 in the Federal Logistics Information System (FLIS). NIIN 012709402 was cancelled on January 2, 2008, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 4820013087199. 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 3 suppliers. 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) 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.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820012709402 does not contain precious metals.
This information was last updated on Jun 01, 2025.