Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SER6743PT15 found under Bearing Ball Duplex by The Walter Machine Co Inc. The National Stock Number assigned to this part is 3110002020525, 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 SER6743PT15.