Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 221-6357 F7227 found under Mcu Workstation by Dell Corporation. The National Stock Number assigned to this part is 7025015475781, and the Federal Supply Class is 7025 Adp Input Output And Storage Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 221-6357 F7227.