Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 648Z1680-21 found under Display Optoelectronic by Drs Training And Control Systems Llc. The National Stock Number assigned to this part is 5980011819857, and the Federal Supply Class is 5980 Optoelectrical Devices And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 648Z1680-21.