National Stock Number
4820-01-266-8194
National Stock Number (NSN) 4820-01-266-8194, or NIIN 012668194, (disk and seat set,valve) was assigned October 30, 1987 in the Federal Logistics Information System (FLIS). NIIN 012668194 was cancelled on September 21, 2002, 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 one supplier. 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) 37882. [A UNIT OF MATCHED ITEMS CONSISTING OF A CIRCULAR OR CYLINDRICAL ITEM, GROUND FOR PROVISION TO BE LAPPED WITH THE MATING SEATING SURFACE TO FUNCTION AS A UNIT TO FORM A DRIP TIGHT SEAL. MAY INCLUDE PLATE, INSERT, GUIDE, RINGS, AND THE LIKE. SEE ALSO DISK, VALVE AND 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 4820012668194 does not contain precious metals.
This information was last updated on Aug 01, 2025.