Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SM-B-207789 found under Stop Electrical Switch by Be Cu Manufacturing Co Inc. The National Stock Number assigned to this part is 5930000928733, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SM-B-207789.