National Stock Number (NSN) 4720-01-163-1571, or NIIN 011631571, (hose,air duct) was assigned September 28, 1983 in the Federal Logistics Information System (FLIS). NIIN 011631571 was cancelled on August 2, 2015, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 4720012000812. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. 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, with the most recent procurement date of Jan 27, 2015. There have been 2 contracts issued for this part number, with 2 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 2 different suppliers. The last contract numbers awarded were: SPE7M415M1122, SPE7M414M3270. The total value of the awarded contracts has been US$ 13,790.00.
This NSN is fairly common among different weapons systems, belonging to 24 different platforms.
There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Apr 01, 2020, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.
This NSN is assigned to Item Name Code (INC) 11116. [A FLEXIBLE, TUBULAR ITEM OF LIGHT WALL CONSTRUCTION. IT MUST HAVE SINGLE OR MULTIPLE LAYERS OF NONMETALLIC MATERIAL, BUT MAY CONTAIN METAL WIRE REINFORCEMENT, FOIL TYPE LINER, AND/OR WOVEN OR BRAIDED COVER. IT IS DESIGNED TO CONVEY UNDER LOW PRESSURE GASEOUS MATERIAL, SUCH AS AIR AND FUMES, AND LIGHT WEIGHT SOLID MATERIALS, SUCH AS DUST, POWDERS, AND FIBERS. FOR ITEMS WITH COUPLINGS, SEE HOSE ASSEMBLY, AIR DUCT. FOR ITEMS OF SLEEVE SECTION DESIGN RATED FOR HIGH PRESSURE USE, SEE SLEEVE, SEAL, COUPLING. EXCLUDES:HOSE, NONMETALLIC.]. 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 4720011631571 does not contain precious metals.
This information was last updated on Aug 01, 2025.