Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number L74947-7 found under Retainer Electron Tube by Raytheon Company. The National Stock Number assigned to this part is 5960002494917, 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 L74947-7.