Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LR53 found under Bearing Roller Thrust by Hatch And Kirk Inc. The National Stock Number assigned to this part is 3110001561487, 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 LR53.