National Stock Number
4520-01-172-0729
National Stock Number (NSN) 4520-01-172-0729, or NIIN 011720729, (cap,flue) was assigned February 15, 1984 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. 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.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Sep 02, 2006, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The Government physically does not have in its possession sufficient, accurate, or legible data to purchase this part from other than current source(s). (NOTE: This code is applicable only to parts under immediate buy requirements and only as long as the deficiency is under review for resolution and appropriate recoding.) Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 15680. [AN ITEM DESIGNED FOR ATTACHING TO THE TOP OF A CHIMMEY OR SMOKE STACK TO ELIMINATE BACK DRAFT AND CREATE A PARTIAL VACUUM.]. 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 4520011720729 does not contain precious metals.
This NSN is associated to Schedule B 7321190070: cooking appliances and plate warmers, nonportable, solid fuel, of iron or steel. The Schedule B End Use is listed as household appliances. NAICS classification category 335221: household cooking appliance manufacturing.
This information was last updated on Aug 01, 2025.