Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BE72 12 5 420U found under Coupling Shaft Rigi by Eaton Aerospace Ltd. The National Stock Number assigned to this part is 3010012815283, and the Federal Supply Class is 3010 Torque Converters And Speed Changers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like BE72 12 5 420U.