Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NEMA CB 1-1956 found under Brush Electrical Co by National Electrical Manufacturers. The National Stock Number assigned to this part is 5977005576056, and the Federal Supply Class is 5977 Electrical Contact Brushes And Electrodes. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NEMA CB 1-1956.