National Stock Number
4520-00-015-1921
National Stock Number (NSN) 4520-00-015-1921, or NIIN 000151921, (damper,flue) has an unknown assigned date. NIIN 000151921 was cancelled on May 22, 1997, 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 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) 15646. [A CAST IRON OR SHEET METAL PLATE DESIGNED TO BE INSTALLED IN A BOILER, HEATER, STOVE, OR FURNACE FLUE PIPE TO CONTROL THE DRAFT, AND/OR IN AN AIR DUCT TO CONTROL THE PASSAGE OF AIR. EXCLUDES:VALVE, BUTTERFLY.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4520000151921 does not contain precious metals.
This information was last updated on Jun 01, 2025.