Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CR75-500CH found under Hub Coupling Flexible by Rossi Enterprises Inc. The National Stock Number assigned to this part is 3010015955524, 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 CR75-500CH.