External Tongue Lock Washer

The external tongue lock washer is a mechanical part used to prevent nuts from loosening. The following is a detailed introduction to the external tongue lock washer:

Structural Features of the External Tongue Lock Washer

Shape: It is usually a circular thin piece, similar to an ordinary washer, but there is a tongue extending outward at the edge.

Dimensions: The dimensional specifications are determined according to the nuts and bolts it matches. The inner diameter is slightly larger than the diameter of the bolt, and the outer diameter is generally slightly larger than that of an ordinary washer to provide a larger contact area. The length and width of the tongue also have corresponding standards to ensure that it can effectively fit into the holes or slots of the connected components.

Materials: It is generally made of high-quality carbon steel or stainless steel materials. The external tongue lock washer made of carbon steel has high strength and hardness and can withstand large pressures and frictional forces; the stainless steel material has good corrosion resistance and oxidation resistance and is suitable for harsh environments such as humidity, acids, and alkalis.

Working Principle of the External Tongue Lock Washer

The external tongue lock washer restricts the rotation of the nut or bolt by inserting the external tongue into the inner hole or slot of the connected component. During installation, first put the washer on the bolt, and then tighten the nut. After the nut is tightened, turn up the external tongue to make it snap into the corresponding position of the connected component, thus preventing the nut from loosening due to vibrations, impacts, or other external forces.

Advantages of the External Tongue Lock Washer

Reliable Anti-loosening: By mechanically preventing the nut from rotating, it can effectively prevent the nut from loosening under harsh conditions such as vibrations and impacts, ensuring the reliability of the connection.

Simple Structure: Compared with some complex anti-loosening devices, the structure of the external tongue lock washer is relatively simple, the manufacturing process is relatively easy, and the cost is low.

Convenient Installation: No special installation tools are required. Just turn the external tongue to the appropriate position after tightening the nut, and the operation is simple and quick.

Application Fields of the External Tongue Lock Washer

Automobile Manufacturing: It is used for the bolt connections of parts such as automobile engines and chassis to prevent the nuts from loosening due to vibrations during the vehicle's driving, ensuring the safety and reliability of the automobile.

Mechanical Manufacturing: It is widely used in the assembly of various mechanical equipment, such as machine tools, cranes, speed reducers, etc., to ensure the stability of the connection parts during the operation of the equipment.

Electronics and Electrical Appliances: In the production of electronic equipment, it is used for the bolt connections of parts such as circuit boards and casings to prevent equipment failures caused by the loosening of nuts.

Aerospace: The external tongue lock washer is also applied in the manufacturing of aerospace equipment such as aircraft and satellites to meet the requirements of high reliability and safety.

Precautions for Selecting the External Tongue Lock Washer

Size Matching: According to the specifications of the bolts and nuts in use, select an external tongue lock washer with appropriate inner diameter, outer diameter, and tongue size to ensure that it can cooperate well with the connected components.

Material Selection: Select an external tongue lock washer of appropriate material according to different usage environments. For example, in a humid environment or outdoors, stainless steel materials should be selected; in a general dry environment, carbon steel materials usually can meet the requirements.

Standards and Specifications: According to specific application scenarios and industry requirements, select an external tongue lock washer that meets the corresponding standards, such as the national standard GB856, etc., to ensure the product quality and performance.