National Stock Number
4820-00-535-9741
National Stock Number (NSN) 4820-00-535-9741, or NIIN 005359741, (valve,check) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). NIIN 005359741 was cancelled on August 24, 2011, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. This NSN replaces 2 stock numbers: 1660007395091, 1660004391302.
There are 8 manufacturer part numbers associated with this NSN. 3 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 6 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers 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.
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.]. 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 4820005359741 does not contain precious metals.
This information was last updated on Aug 01, 2025.