Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 9X-0299 found under Parts Kit Brush Ele by Caterpillar Inc. The National Stock Number assigned to this part is 5977014389788, 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 9X-0299.