DIN 127B specifies spring washers that feature a square ends and a slightly trapezoidal cross-section. These washers are designed to provide a compensating spring force in the axial direction and prevent loosening of bolted joints subjected to vibration. The rectangular section of the washer helps maintain a larger contact area with the fastening element, enhancing its ability to distribute the load and reduce the risk of damage to the joint. The standard also outlines the dimensions and technical specifications for these spring washers, ensuring their compatibility with various fastening applications. DIN 127B sets the standard for reliable and effective spring washers that play a crucial role in maintaining the integrity and longevity of bolted connections.