Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 163AS342-2 found under Electron Tube by Westinghouse Electric Corp. The National Stock Number assigned to this part is 5960001636542, 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 163AS342-2.