Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number QQB613 found under Sheet Metal by Federal Specifications. The National Stock Number assigned to this part is 9535000694788, and the Federal Supply Class is 9535 Plate Sheet Strip And Foil Nonferrous Base Metal. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like QQB613.