National Stock Number
4820-01-129-0421
National Stock Number (NSN) 4820-01-129-0421, or NIIN 011290421, (valve,exhaust control) was assigned March 31, 1982 in the Federal Logistics Information System (FLIS). NIIN 011290421 was cancelled on April 30, 2010, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, there are no suppliers listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that 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 assigned to Item Name Code (INC) 07800. [A MANUALLY OPERATED VALVE HAVING ONE INLET AND TWO OUTLETS. IT IS DESIGNED TO CONTROL THE DIRECTION OF EXHAUST GASES INTO EITHER OF THE OUTLETS, ONE OUTLET DISCHARGING DIRECTLY INTO THE ATMOSPHERE, THE OTHER DISCHARGING UNDER WATER.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820011290421 does not contain precious metals.
This information was last updated on Aug 01, 2025.