Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6B9191 found under Plate by Caterpillar Inc. The National Stock Number assigned to this part is 2520001658911, and the Federal Supply Class is 2520 Vehicular Power Transmission Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 6B9191.