Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 550025 found under Bearing Half Sleeve by Lodestone Corp Div Of Fedders Corp. The National Stock Number assigned to this part is 3120005735589, 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 550025.