Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 555051-031 found under Lamp Incandescent by Stromberg Carlson Corp. The National Stock Number assigned to this part is 6240001433049, 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 555051-031.