National Stock Number
4820-01-159-7705
National Stock Number (NSN) 4820-01-159-7705, or NIIN 011597705, (seat,valve) was assigned August 13, 1983 in the Federal Logistics Information System (FLIS). NIIN 011597705 was cancelled on August 2, 2008, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 4820014303871. This NSN replaces 1 stock number, 4820011881246.
There are 7 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, only one supplier is deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.
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 4820011597705 does not contain precious metals.
This information was last updated on Jun 01, 2025.