Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FX3509 found under Lamp Fluorescent by Pauluhn Electric Manufacturing Llp. The National Stock Number assigned to this part is 6240002995546, 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 FX3509.