Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 51-00031 found under Lamp Incandescent by Krueger Robert E Inc. The National Stock Number assigned to this part is 6240012612348, 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 51-00031.