National Stock Number
4820-01-177-8972
National Stock Number (NSN) 4820-01-177-8972, or NIIN 011778972, (valve,butterfly) was assigned April 28, 1984 in the Federal Logistics Information System (FLIS). NIIN 011778972 was cancelled on June 2, 1999, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. 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) 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 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 4820011778972 does not contain precious metals.
This information was last updated on May 01, 2025.