Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number XT137425 found under Cone And Rollers Tapered Roller by Blue Tee Corp. The National Stock Number assigned to this part is 3110001003583, 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 XT137425.