External tooth lock washers are specifically designed to provide superior grip and resist loosening due to vibration, unlike flat washers which primarily serve as load distributors. The serrated teeth of these washers dig into the surface of the fastened material and the nut or bolt head, creating a mechanical interlock that flat washers simply cannot offer. This unique functionality ensures a secure hold in high-vibration environments such as engines, industrial machinery, and rotating equipment.
In contrast, flat washers can allow micro-movements over time, gradually leading to loosening, especially in dynamic applications. By using external tooth lock washers, industries benefit from enhanced performance, reduced maintenance cycles, and improved safety. When longevity and stability are crucial, these locking washers offer a clear advantage over their flat counterparts.
