>> Search results for: 4273821 NSN Search Results National Stock Number (NSN) Description 2520-01-672-8766, 2520016728766 Cancelled -> Replaced by 2520016945227 4720-00-529-0990 , 4720005290990 HOSE,AIR DUCT 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