Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CR69AU4-020000MHZ found under Crystal Unit Quartz by Crystek Corporation. The National Stock Number assigned to this part is 5955001387522, and the Federal Supply Class is 5955 Oscillators And Piezoelectric Crystals. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CR69AU4-020000MHZ.