Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 996569-003 found under Crystal Unit Quartz by L 3 Communications Electron. The National Stock Number assigned to this part is 5955009994839, 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 996569-003.