Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number O 1553A GCC found under Oscillator Pulse Delay by Joint Electronics Type Designation. The National Stock Number assigned to this part is 5955001346503, 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 O 1553A GCC.