>> Search results for: FGS400 NSN Search Results National Stock Number (NSN) Description 5920-01-234-1323, 5920012341323 Cancelled -> Replaced by 5920011248315 4820-01-444-6522 , 4820014446522 VALVE,SAFETY RELIEF 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