Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B300-265-6 109 found under Lamp Incandescent by Environmental Technology Inc. The National Stock Number assigned to this part is 6240013503533, 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 B300-265-6 109.