The simple answer is that washers are called washers because they are used to "wash" or distribute the pressure of a fastener, such as a bolt or screw, over a larger area.
How Washers Work
Washers are typically thin, flat discs with a hole in the center. They are placed between a fastener and the material being joined to:
- Prevent the fastener from digging into the material: This is especially important for soft materials like wood or plastic.
- Distribute the force of the fastener: This helps to prevent the material from being crushed or damaged.
- Provide a more secure connection: Washers help to prevent the fastener from loosening or vibrating loose.
Types of Washers
There are many different types of washers, each designed for a specific purpose. Some common types include:
- Plain washers: These are the most common type of washer and are used for general-purpose applications.
- Lock washers: These washers have a spring-like design that helps to prevent the fastener from loosening.
- Fender washers: These washers have a larger diameter than plain washers and are used to distribute the force over a larger area.
- Star washers: These washers have a star-shaped design that provides a more secure grip on the fastener.
Why Washers Are Important
Washers are an essential part of many mechanical assemblies and are used in a wide variety of applications. They help to ensure that connections are strong, secure, and reliable.
