National Stock Number
4820-00-943-8388
National Stock Number (NSN) 4820-00-943-8388, or NIIN 009438388, (valve,check) was assigned February 2, 1966 in the Federal Logistics Information System (FLIS). NIIN 009438388 was cancelled on January 2, 2009, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 4820009438389. 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, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, only one supplier is 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) 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 4820009438388 does not contain precious metals.
This information was last updated on Aug 01, 2025.