Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number F40T17 CW IS found under Lamp Fluorescent by General Electric Inc. The National Stock Number assigned to this part is 6240005773440, and the Federal Supply Class is 6240 Electric Lamps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like F40T17 CW IS.