Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MD-X-2 found under Coupling Shaft Rigid by Fluid System Components Inc. The National Stock Number assigned to this part is 3010013441958, 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 MD-X-2.