Double Coil Helical Spring Washer
A double coil helical spring washer, also known as a split lock washer or a spring lock washer, is a type of washer designed to provide a locking action to prevent loosening of nuts and bolts under vibration or torque.
This type of washer is characterized by its helical shape, with two coils instead of the single coil found in standard spring washers. The double coil design provides increased spring force, resulting in greater resistance to loosening.
When a nut or bolt is tightened against a double coil helical spring washer, the coils flatten slightly, exerting a spring force that helps keep the fastener securely in place. This locking action helps maintain tension in the assembly, reducing the risk of bolts coming loose over time.
Double coil helical spring washers are typically made from high-quality spring steel or stainless steel, ensuring durability and resistance to corrosion. They are commonly used in applications where secure fastening is critical, such as automotive, machinery, and construction industries.