Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C50Z2C8 found under Insert Electron Tub by Siemens Schweiz Ag. The National Stock Number assigned to this part is 5960006174722, 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 C50Z2C8.