National Stock Number
5340-21-910-8604
National Stock Number (NSN) 5340-21-910-8604, or NIIN 219108604, (plate,retaining,seal) has an unknown assigned date. This NSN does not replace any other NSNs.
There is only one manufacturer part number 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 unique to one weapons system.
There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries.
This NSN is assigned to Item Name Code (INC) 36133. [A GENERALLY FLAT ITEM VARIED IN SHAPE WITH OR WITHOUT A CENTRALLY LOCATED HOLE, DESIGNED TO HOLD SEALS IN PLACE. IT MUST HAVE DRILLED AND/OR TAPPED HOLES FOR MOUNTING PURPOSES. EXCLUDES COVER, ACCESS, SHIM AND SPACER, PLATE. SEE ALSO FLANGE (AS MODIFIED).].
This information was last updated on Aug 11, 2025.