Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number XE-5 400HZ found under Oscillator Noncrystal Controlled by Connor Winfield Corp. The National Stock Number assigned to this part is 5955010683305, 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 XE-5 400HZ.