Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number OTTO214-1031 found under Oscillator Crystal by Aeroflex Laboratories Inc. The National Stock Number assigned to this part is 5955011426185, 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 OTTO214-1031.