National Stock Number
1660-01-344-5711
National Stock Number (NSN) 1660-01-344-5711, or NIIN 013445711, (duct assembly,air conditioning-heating,aircraft) was assigned August 31, 1991 in the Federal Logistics Information System (FLIS). NIIN 013445711 was cancelled on April 2, 2001, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 1560013969944. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN. ISO Group has several sources of supply for this NSN.
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) 32351. [A HOLLOW BODY USED TO TRANSPORT AIR TO VARIOUS PARTS OF THE AIRCRAFT FOR THE PURPOSE OF HEATING, COOLING, PRESSURIZING, DE-ICING, AND THE LIKE. IT MAY INCLUDE FLANGE(S), BRACKET(S), AND THE LIKE FOR MOUNTING PURPOSES. EXCLUDES:PIPES USED IN AIRCRAFT EXHAUST SYSTEMS AND PIPES USED IN NON-AIRCRAFT APPLICATIONS. EXCLUDES:PIPE, EXHAUST AND PIPE, AIR CONDITIONING-HEATING.]. This item does not have a critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 1660013445711 does not contain precious metals.
This information was last updated on Aug 01, 2025.