What Are the Different Lock Washers?
Lock washers are fasteners that are commonly used in various industries to prevent nuts and bolts from loosening due to vibration or other mechanical stresses. They are designed to provide a secure and reliable connection between two parts, by increasing the friction between the fastener and the substrates. Lock washers come in different types, shapes, and sizes, each with its unique features and benefits. In this article, we will discuss the different types of lock washers, their applications, and which one might be the best choice for your project.
Spring Washers.
One of the most common types of lock washers is the spring washer, also known as a disc spring or Belleville washer. These washers have a bowed shape and are used to prevent nuts and bolts from loosening due to vibration or thermal expansion. The spring washer is designed to deflect under load, creating tension in the bolted joint, which prevents the nut from backing off. Spring washers are made of several materials including stainless steel, carbon steel, and brass. They are widely used in automotive, aerospace, and industrial applications, where high-stress environments are common.
Toothed Washers.
Toothed washers, also known as serrated washers, are another common type of lock washer. These washers have teeth on the inside that bite into the substrate, creating a locking effect that prevents the fastener from rotating. Toothed washers are ideal for use on soft or brittle materials, such as wood or plastics, where excessive force can cause damage to the substrate. They are also commonly used in electrical applications, as they provide a secure connection that can tolerate vibration and movement.
Split Washers.
Split washers, or helical spring washers, are another type of lock washer that consists of a split ring that is wound into a helix. These washers provide tension to the joint, creating a locking effect that prevents nuts and bolts from loosening. Split washers are commonly made of hardened steel and are used in high-stress environments, such as automotive and aerospace applications. They are also used in household appliances, construction, and industrial machinery.
Tab Washers.
Tab washers, or locking tab washers, are designed to prevent nuts and bolts from loosening due to rotation or vibration. They consist of a circular washer with one or more tabs that are bent over the edge of the fastener, creating a secure locking effect. Tab washers are typically used in high-stress environments, such as heavy machinery, automotive components, and military equipment.
External Tooth Lock Washers.
External tooth lock washers have teeth on the outside that are designed to grip the substrate, creating a secure locking effect that prevents nuts and bolts from backing off. These washers are widely used in automotive, aerospace, and construction applications, where vibration and movement are common. External tooth lock washers are made of various materials, including stainless steel, carbon steel, and brass.
Internal Tooth Lock Washers.
Internal tooth lock washers are similar to external tooth lock washers but have teeth on the inside that grip the fastener, creating a locking effect that prevents rotation. These washers are commonly used in electrical applications, where a secure connection that can tolerate vibration and movement is essential.
Conclusion.
Lock washers are an essential component in the fastening industry, providing a secure and reliable connection between two parts. While there are various types of lock washers, each with their unique features and benefits, choosing the right one for your project will depend on several factors, including the type of material, environment, and stress levels. If you need help choosing the right lock washer for your project, contact us today. Our team of experts can assist you in finding the right lock washer for your application.
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