Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M1LAMP found under Lamp Incandescent by American Telephone And Telegraph Co. The National Stock Number assigned to this part is 6240000541001, 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 M1LAMP.