Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 11420 found under Brush Block Assembl by L3 Communications Corp. The National Stock Number assigned to this part is 5977004745837, 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 11420.