>> Search results for: 549788 NSN Search Results National Stock Number (NSN) Description 3990-14-496-4990, 3990144964990 VALVE 1015-21-875-2460 , 1015218752460 RING 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