Square cone washers, also known as square taper washers or cone washers, are specialized types of washers used in construction and engineering applications, particularly in situations where a secure and tight fit is required. They are typically used in conjunction with bolts or screws.

Here's a breakdown of their features:

1. Shape: As the name suggests, square cone washers have a square shape with a tapered or conical profile. This unique shape allows them to provide a secure and tight fit when fastened.
2. Material: They are commonly made from metal such as steel, stainless steel, or brass. The material choice depends on factors such as the application requirements, environmental conditions, and desired strength.
3. Function: Square cone washers are primarily used to create a strong connection between the fastener (bolt or screw) and the surface being secured. The tapering design helps distribute the load evenly and prevents loosening or slipping of the fastener over time, even under high vibration or stress conditions.
4. Applications: They are commonly used in structural steel construction, automotive assembly, machinery, and other industrial applications where a reliable and sturdy connection is essential.
5. Installation: Square cone washers are typically installed by placing them between the fastener head and the surface to be secured. As the fastener is tightened, the washer compresses, conforming to the surface and creating a tight seal.

Overall, square cone washers are essential components in various mechanical and structural applications, providing stability, strength, and durability to the connections they secure.