External Toothed Lock Washer for Assemblies

The external toothed lock washer for assemblies is a common fastener. The following is the relevant introduction about it:

Structural Characteristics of the External Toothed Lock Washer for Assemblies

It is generally in the shape of a flat circular ring, and there are many elastic upturned teeth on the outer circumference. These upturned teeth will press against the supporting surface after installation. It is usually made of metal materials, such as 65 manganese steel, 304 stainless steel, carbon steel, etc., and has certain elasticity and strength.

Working Principle of the External Toothed Lock Washer for Assemblies

Taking advantage of the elasticity and sharp shape of the external teeth, when the nut or bolt is tightened, the teeth will embed into the surface of the connecting part, generating a large frictional force to prevent the nut or bolt from loosening. At the same time, the elasticity of the washer can also compensate for the slight displacement generated at the connecting part due to vibration or other factors to a certain extent, maintaining the tightness of the connection.

Advantages of the External Toothed Lock Washer for Assemblies

Good Anti-loosening Performance: The tight engagement between the teeth and the supporting surface can effectively prevent the nut or bolt from loosening under the action of external forces such as vibration and impact. Compared with ordinary washers, the anti-loosening effect is more remarkable.

Uniform Elastic Force: It can be evenly distributed at the connecting part, making the tightening force more balanced and reducing the deformation or damage of the connecting part caused by uneven force.

Application Scenarios of the External Toothed Lock Washer for Assemblies

It is widely used in various threaded connection parts that require anti-loosening in fields such as machinery manufacturing, automotive manufacturing, and aerospace, such as the assembly of equipment like engines and transmissions, as well as the connection parts of some outdoor machinery and vibrating equipment, to ensure the reliability and stability of the connection.

Selection Method of the External Toothed Lock Washer for Assemblies

When selecting, it is necessary to determine according to factors such as the size and material of the connecting part, the working environment, and the requirements for the tightening force. For example, for high-temperature environments, materials with high-temperature resistance should be selected; for occasions with corrosion resistance requirements, washers made of materials with good corrosion resistance such as stainless steel should be selected.

Installation Key Points of the External Toothed Lock Washer for Assemblies

During installation, it is necessary to ensure that the toothed surface of the washer is in full contact with the surface of the connecting part, and it should be installed in the correct direction. If the washer has a specific directionality, attention should be paid to installing it in the correct position to ensure that the teeth can play the best anti-loosening role. 

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