Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TC1217 found under Electron Tube by Epi Printers Inc. The National Stock Number assigned to this part is 5960012603973, 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 TC1217.