Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number QQS00640FS1020 found under Sheet Metal by Federal Specifications. The National Stock Number assigned to this part is 9515005961959, and the Federal Supply Class is 9515 Plate Sheet Strip Foil And Leaf. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like QQS00640FS1020.