Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MS18003-4811 found under Lamp Incandescent by Goriziane Group Spa. The National Stock Number assigned to this part is 6240003684972, 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 MS18003-4811.