>> Search results for: 503A28 NSN Search Results National Stock Number (NSN) Description 5310-00-576-5492, 5310005765492 Cancelled -> Replaced by 5310002855660 4720-00-442-5767 , 4720004425767 HOSE,PREFORMED 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