External snap rings are circular fasteners used to secure components on shafts or in housings. They fit into a groove on the outside of a shaft, preventing parts from sliding off. Made from materials like steel or stainless steel, they are designed to withstand various loads and environmental conditions. These rings are easy to install and remove, making them a popular choice in mechanical assemblies. They come in various sizes and thicknesses to accommodate different applications, such as in automotive parts, industrial machinery, and electrical devices. Their simple design contributes to their effectiveness in maintaining component alignment.