DIN 6797 Type J is an external tooth lock washer that is commonly used in applications where high vibration or dynamic loading is expected. It is designed to prevent the loosening or slipping of a bolt or nut under vibration or torque. In this blog, we will discuss the features, benefits, and applications of DIN 6797 Type J lock washers in detail.

Features of DIN 6797 Type J Lock Washers DIN 6797 Type J lock washers have several features that make them an ideal choice for applications where vibration and dynamic loading are expected. These features include:

  1. External Teeth: DIN 6797 Type J lock washers have external teeth that bite into the mating surface of the joint. These teeth provide additional resistance to rotation and loosening of the bolt or nut under vibration or torque.

  2. Serrated Surface: The serrated surface of the external teeth provides a better grip on the mating surface, reducing the chances of slippage or movement of the bolt or nut.

  3. Standardization: DIN 6797 Type J lock washers are designed and manufactured according to the German standard DIN 6797. This ensures that they meet the required specifications and are compatible with other components in the joint.

  4. Material: DIN 6797 Type J lock washers are typically made from spring steel or stainless steel. These materials provide good tensile strength, corrosion resistance, and durability.

Benefits of DIN 6797 Type J Lock Washers DIN 6797 Type J lock washers offer several benefits over other types of lock washers. These benefits include:

  1. Better Grip: The external teeth of DIN 6797 Type J lock washers provide a better grip on the mating surface. This reduces the chances of slippage or movement of the bolt or nut, ensuring a secure joint.

  2. High Vibration Resistance: DIN 6797 Type J lock washers are specifically designed to resist high vibration and dynamic loading. This makes them an ideal choice for applications where such conditions are expected.

  3. Standardization: DIN 6797 Type J lock washers are manufactured according to a standardized specification, ensuring compatibility with other components in the joint.

  4. Easy Installation: DIN 6797 Type J lock washers are easy to install and do not require any special tools or equipment.

Applications of DIN 6797 Type J Lock Washers DIN 6797 Type J lock washers are commonly used in various applications where high vibration and dynamic loading are expected. Some of the common applications include:

  1. Automotive Industry: DIN 6797 Type J lock washers are widely used in the automotive industry, especially in engine assembly and suspension systems. They are used to secure bolts and nuts in high vibration and dynamic loading conditions.

  2. Aerospace Industry: DIN 6797 Type J lock washers are also used in the aerospace industry, especially in aircraft engines and landing gear systems. They are used to secure bolts and nuts in high vibration and dynamic loading conditions.

  3. Machinery Industry: DIN 6797 Type J lock washers are used in various machinery applications, such as heavy equipment, power tools, and pumps. They are used to secure bolts and nuts in high vibration and dynamic loading conditions.

  4. Construction Industry: DIN 6797 Type J lock washers are also used in the construction industry, especially in steel structures and bridges. They are used to secure bolts and nuts in high vibration and dynamic loading conditions.

DIN 6797 Type J lock washers are available in various sizes to fit different bolt and nut diameters. The dimensions of DIN 6797 Type J lock washers are standardized according to the German standard DIN 6797. The following is a dimension guide for DIN 6797 Type J lock washers:

Nominal Diameter: The nominal diameter of the lock washer is the size of the bolt or nut it is designed to fit. The standard nominal diameters range from M3 to M42.

Outer Diameter: The outer diameter of the lock washer is the diameter of the washer itself. It is typically larger than the diameter of the bolt or nut. The standard outer diameters range from 5.5mm to 50mm.

Inner Diameter: The inner diameter of the lock washer is the diameter of the hole in the center of the washer. It should be slightly larger than the diameter of the bolt or nut to allow for easy installation. The standard inner diameters range from 3.2mm to 36mm.

Thickness: The thickness of the lock washer is the distance between the top and bottom surfaces of the washer. It should be chosen based on the thickness of the material being fastened. The standard thicknesses range from 0.5mm to 4mm.

Number of Teeth: The number of teeth on the lock washer varies depending on the size of the washer. Generally, larger lock washers have more teeth than smaller ones. The number of teeth can range from 6 to 32.

Pitch: The pitch of the teeth on the lock washer refers to the distance between the tips of adjacent teeth. The standard pitches range from 0.5mm to 3mm.

Overall, the dimensions of DIN 6797 Type J lock washers should be chosen based on the size and thickness of the bolt or nut being used and the thickness of the material being fastened. It is important to ensure that the lock washer fits properly and provides a secure joint that resists loosening under vibration or torque.

Conclusion

DIN 6797 Type J lock washers are a reliable and effective solution for preventing the loosening or slipping of bolts and nuts under high vibration or dynamic loading conditions. They offer several benefits over other types of lock washers, including better grip, high vibration resistance, and standardization.

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