Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number U5ME0003 found under Bearing Half Sleeve by Perkins Engines Inc. The National Stock Number assigned to this part is 3120012421715, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like U5ME0003.