Shake Proof Washers, also known as lock washers, are designed to prevent fasteners from loosening due to vibration and torque. Featuring a split or toothed design, they exert a spring force between the fastener's head and the substrate, effectively increasing friction and resistance to rotation. Ideal for machinery, vehicles, and structures subjected to high levels of vibration, Shake Proof Washers ensure a secure, lasting hold in critical applications, providing peace of mind in the integrity of your assemblies.