Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number QSB0211 found under Switch Lever by Matsushita Electric Corp Of America. The National Stock Number assigned to this part is 5930011433014, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like QSB0211.