Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 256 5018 010 found under Electron Tube by Continental Electronics Corporat. The National Stock Number assigned to this part is 5960015098779, 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 256 5018 010.