Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RV-40 15A USED ON S N 55901-4 found under Bearing Roller Tapered by The Walter Machine Co Inc. The National Stock Number assigned to this part is 3110013482479, 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 RV-40 15A USED ON S N 55901-4.