Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 60-21640 7075-T6511 found under Beam Structural by Transtar Metals Corp. The National Stock Number assigned to this part is 9540013638548, and the Federal Supply Class is 9540 Structural Shapes Nonferrous Base Metal. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 60-21640 7075-T6511.