Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 137283 found under Cone And Rollers Tapered Roller by Nacco Materials Handling Group Inc. The National Stock Number assigned to this part is 3110009289543, and the Federal Supply Class is 3110 Bearings Antifriction Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 137283.