Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CY 4657 TKQ 2 found under Case Storage by Joint Electronics Type Designation. The National Stock Number assigned to this part is 7125007885299, 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 CY 4657 TKQ 2.