Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C05-5C found under Hub Coupling Flexib by W M Berg Inc. The National Stock Number assigned to this part is 3010015094830, 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 C05-5C.