Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R1-1601 found under Lamp Glow by Servino And Associates Inc. The National Stock Number assigned to this part is 6240001791813, 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 R1-1601.