Spring Washers

Spring washers, also known as disc springs or split washers, are mechanical fasteners designed to provide tension and absorb shock in bolted assemblies. Unlike flat washers, which simply distribute load, spring washers add elasticity to joints, maintaining a constant load even in the presence of vibration, thermal expansion, or minor loosening. This functionality makes them especially useful in applications requiring secure fastening in dynamic environments.

The most common type of spring washer is the split washer, also called a lock washer. This type has a single cut across the washer, creating a helical shape that grips the fastener and surface, helping to prevent rotation and loosening. Belleville washers (or conical disc springs) and wave washers are other types of spring washers that provide unique spring actions. Belleville washers offer high-load

Capability in a compact design, while wave washers offer lighter, more uniform loads suitable for smaller spaces.

Spring washers are commonly made from materials like high-carbon steel, stainless steel, or alloy steel for durability and resistance to corrosion. They are used in industries such as automotive, aerospace, electronics, and machinery, where vibration resistance, preload maintenance, and secure fastener positioning are essential. By preventing loosening and reducing the risk of joint failure, spring washers contribute significantly to the safety and stability of mechanical assemblies.