Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4473200420 found under Electron Tube by Thaleselectronic Systems Gmbh. The National Stock Number assigned to this part is 5960009443548, 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 4473200420.