Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number G-402 found under Phototube Assembly by Graphic Arts Mfg. The National Stock Number assigned to this part is 5960012861893, 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 G-402.