>> Search results for: B539703 NSN Search Results National Stock Number (NSN) Description 2590-99-978-2669, 2590999782669 VALVE 4720-99-978-1390 , 4720999781390 HOSE 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