Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number F420C1-8 found under Holder Electrical Contact Brush by Electric Speed Indicator Co. The National Stock Number assigned to this part is 5977005722599, 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 F420C1-8.