Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MS89-83 found under Holder Electrical Contact Brush by Bogue Systems Inc. The National Stock Number assigned to this part is 5977000655617, 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 MS89-83.