Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1F7520 found under Lockplate Bearing by Caterpillar Inc. The National Stock Number assigned to this part is 2520004263534, 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 1F7520.