本试验的目的是评估用于乘用车、轻型卡车和多用途车辆的车轮螺母座的轴向强度。此外，建议使用最小接触面积，以确保在将螺母拧紧至螺母座时有足够的旋转力。虽然该测试确保螺母座的最小强度，但车轮也必须具有一定的灵活性。这种灵活性以及螺栓张力对于保持车轮保持力非常重要。

The purpose of this test is to evaluate the axial strength of the nut seat of wheels intended for use on passenger cars, light trucks, and multipurpose vehicles. In addition, a minimum contact area is recommended to ensure enough strength for the rotational force in tightening a nut against the nut seat. While this test ensures the minimum strength of the nut seat, the wheel must also have a degree of flexibility. This flexibility, as well as bolt tension, are important to maintain wheel retention.