National Stock Number
2815-01-236-6644
National Stock Number (NSN) 2815-01-236-6644, or NIIN 012366644, (insert,engine valve seat) was assigned July 21, 1986 in the Federal Logistics Information System (FLIS). NIIN 012366644 was cancelled on May 2, 2003, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 2815012358497. 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, 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) 42140. [A METAL RING DESIGNED TO PROVIDE A SEATING SURFACE FOR A VALVE, POPPET, ENGINE IT IS MADE OF SPECIAL HIGH-GRADE ALLOY METAL THAT CAN WITHSTAND HIGH OPERATING TEMPERATURES. FOR FLUID VALVES, SEE SEAT, VALVE.]. This item does not have a critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 2815012366644 does not contain precious metals.
This information was last updated on Jul 01, 2025.