Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 686 1440 001 found under Oscillator Noncrystal Controlled by Rockwell Collins Inc. The National Stock Number assigned to this part is 5955012977672, 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 686 1440 001.