National Stock Number
4820-01-043-8993
National Stock Number (NSN) 4820-01-043-8993, or NIIN 010438993, (valve,vacuum regulating) was assigned July 2, 1977 in the Federal Logistics Information System (FLIS). NIIN 010438993 was cancelled on February 2, 2011, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 4820011600606. This NSN does not replace any other NSNs.
There are 3 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, one supplier is listed as an Active supplier 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.
There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries.
This NSN is assigned to Item Name Code (INC) 27489. [A DEVICE DESIGNED TO REGULATE VACUUM WITHIN THE DESIRED OPERATING LIMITS. SEE ALSO VALVE, VACUUM BREAKING.]. 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 4820010438993 contains an unknown precious metal.
This information was last updated on Apr 01, 2025.