National Stock Number
4820-00-540-3330
National Stock Number (NSN) 4820-00-540-3330, or NIIN 005403330, (valve,check) has an unknown assigned date. NIIN 005403330 was cancelled on September 2, 1992, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 4820007964928. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to 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) 05487. [A VALVE PERMITTING FLOW IN ONE DIRECTION ONLY. IT DOES NOT HAVE A STEM, EXCEPT WHEN EQUIPPED WITH A LEVER AND WEIGHT AND HAS NO PRESSURE ADJUSTMENT. IT MAY BE INLINE OR CARTRIDGE (MANIFOLD) DESIGN.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820005403330 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.