Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 64C34572-11 found under Plate Flexure Semip by San Antonio Air Logistics Center. The National Stock Number assigned to this part is 4920001070302, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 64C34572-11.