Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RGR390PUL found under Bearing Sleeve by Timken Gears And Services Inc. The National Stock Number assigned to this part is 3120006299881, 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 RGR390PUL.