Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2-9661 found under Power Supply Subassembly by Bei Sensors And Systems Co Inc. The National Stock Number assigned to this part is 6130008098498, and the Federal Supply Class is 6130 Converters Electrical Non Rotating. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 2-9661.