Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D0640A005 found under Oscillator Crystal Controlled by Atlantic Microwave Corporation. The National Stock Number assigned to this part is 5963001449141, and the Federal Supply Class is 5963 Electronic Modules. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like D0640A005.