>> Search results for: 204666421 NSN Search Results National Stock Number (NSN) Description 1660-01-264-9876, 1660012649876 DUCT ASSEMBLY,AIR CONDITIONING-HEATING,AIRCRAFT 1660-01-583-4422 , 1660015834422 DUCT ASSEMBLY,AIR CONDITIONING-H 1660-01-527-9056, 1660015279056 DUCT ASSEMBLY,AIR CONDITIONING-H 1 Related Inventory Search You can use this search box to continue searching. Search parameters can include any combination of characteristics, specifications, description, partial part numbers, NSN or other stocking number. Special characters are not needed and are automatically stripped before searching. Do you sell this part? Become part of our growing pool of certified suppliers. Send Information