Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 283550-1151 found under Oscillator Crystal Controlled by Atlantic Inertial Systems Inc. The National Stock Number assigned to this part is 5955011599994, 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 283550-1151.