Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 141-0223-000 found under Shield Electron Tub by Lewis Spring And Mfg Company. The National Stock Number assigned to this part is 5960002641028, 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 141-0223-000.