Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number N17C98378-3803 found under Coupling Shaft Flex by Department Of The Navy. The National Stock Number assigned to this part is 3010002531339, 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 N17C98378-3803.