National Stock Number
4520-01-571-2273
National Stock Number (NSN) 4520-01-571-2273, or NIIN 015712273, (pipe assembly,air conditioning-heating) was assigned January 28, 2009 in the Federal Logistics Information System (FLIS). 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, 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.
This NSN is assigned to Item Name Code (INC) 46863. [A COMBINATION OF LENGTHS OF PIPE AND FITTINGS, SUCH AS ADAPTERS, COLLARS, COUPLINGS, ELBOWS, LATERALS, REDUCERS, TEES, AND THE LIKE, USED TO CONDUCT AIR OR GAS FLOW FROM ONE AREA TO ANOTHER.]. 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 4520015712273 does not contain precious metals.
This information was last updated on Jul 01, 2025.