A mechanical part configured to be placed under torque. The mechanical part includes an inner tube having, a corrugated web (602), and an outer shell (206, 306, 406, 506). The inner tube has an outer tube circumference, a tube axial direction, and a tube length. The corrugated web (602) has a plurality of peaks (608) and a plurality of troughs (610), a height measured as a difference between one of the peaks and one of the troughs, and a web length perpendicular to the height and in the tube axial direction. The outer shell has an inner shell circumference, an outer shell circumference, and a shell length. The plurality of troughs (610) is affixed to the outer circumference of the inner tube. The plurality of peaks (608) is affixed to the inner shell circumference of the outer shell. The web length is aligned with the tube length and the shell length.