Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2581-213 found under Lamp Incandescent by Reliance Comm Tec Corp Lorain Pr. The National Stock Number assigned to this part is 6240001536515, 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 2581-213.