National Stock Number
4820-00-085-5840
National Stock Number (NSN) 4820-00-085-5840, or NIIN 000855840, (valve,butterfly) was assigned December 18, 1967 in the Federal Logistics Information System (FLIS). NIIN 000855840 was cancelled on July 2, 2001, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 4820011916809. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN. ISO Group has several sources of supply for 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) 05489. [A VALVE THAT CONTROLS FLOW BY A CIRCULAR DISK, OR A PAIR OF SEMICIRCULAR DISKS, ATTACHED TO A COMMON SPINDLE OR LEVER TURNING ON A DIAMETRAL AXIS.]. 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 4820000855840 does not contain precious metals.
This information was last updated on Aug 01, 2025.