Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ES0-000054 found under Electron Tube by Navy Electronics Supply Office. The National Stock Number assigned to this part is 5960007606875, and the Federal Supply Class is 5960 Electron Tubes And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ES0-000054.