Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 74949 found under Brush Electrical Co by Hamilton Sundstrand Corporation. The National Stock Number assigned to this part is 5977004837021, 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 74949.