Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number F40 D30 ECO found under Lamp Fluorescent by Osram Sylvania Inc. The National Stock Number assigned to this part is 6240014792840, 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 F40 D30 ECO.