Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number XA5224AA found under Coupling Half Shaft by Marine And Industrial Transmissions Lt. The National Stock Number assigned to this part is 3010010999289, 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 XA5224AA.