Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number XO 433 12 found under Oscillator Crystal Controlled by Dale Electronics Inc. The National Stock Number assigned to this part is 5955013847465, 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 XO 433 12.