Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BAC1514-1057 found under Angle Structural by Boeing Aircraft. The National Stock Number assigned to this part is 9540010821007, 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 BAC1514-1057.