Anti-loosening Mechanism Serrated Lock Washers External Teeth

 Structural Design

 Anti-Loosening Mechanism

• Friction Enhancement: The micro-interlocking between the serrations and the contact surface significantly increases the friction coefficient, effectively resisting loosening caused by vibration and torque.
• Elastic Compensation: The elastic deformation of the washer can absorb dynamic loads, maintaining stable clamping force even under fluctuating working conditions.
• Stress Dispersion: The serrated structure distributes concentrated stress evenly across the connection surface, reducing the risk of fatigue failure in critical components.

Common Materials

• Carbon Steel: Offers low cost and high strength, suitable for general industrial environments. Often quenched to enhance hardness (HRC 36-43).
• Stainless Steel (304/316): Exhibits excellent corrosion resistance, ideal for humid, chemical, or marine environments (e.g., no rusting after 5,000 hours of salt spray testing).
• Brass: Possesses good electrical conductivity, used in electrical equipment to prevent sparking.
• Spring Steel (e.g., 65Mn): Delivers high elasticity, suitable for long-term vibration scenarios.

Surface Treatments

• Zinc Plating (Blue/White/Yellow): Provides basic corrosion protection, with salt spray resistance exceeding 200 hours.
• Phosphating: Enhances friction coefficient, suitable for mechanical connections requiring high torque.
• Black Oxide/Passivation: Improves appearance consistency; passivation of stainless steel maintains surface luster.
• Dacromet: An environmentally friendly coating with salt spray resistance over 1,000 hours, used in high-end industrial applications.

International Standards

• DIN 6798 (Type A/V): European standard, available in flat (Type A) and countersunk (Type V) versions to match different bolt head designs.
• ASME B18.21.1: American standard, specifying dimensions, materials, and testing methods.
• ISO 7040: Internationally recognized standard, covering metric sizes (M3-M24).

Dimension Ranges

• Metric: Inner diameter φ3-φ24mm, outer diameter φ6-φ44mm, thickness 0.5-3.4mm.
• Imperial: #4-1", compatible with various thread specifications.

 Performance Parameters

• Hardness: Carbon steel versions have a hardness of HV 350-425; stainless steel versions have a hardness of HV 200-300.
• Anti-Loosening Effect: Anti-loosening capability is 3 times higher than that of ordinary washers in vibrating environments; tooth tips can embed approximately 0.3mm into metal surfaces.

Application Fields

• Industrial Equipment: Mechanical connections with frequent vibration, such as motors, pumps, and gearboxes.
• Automotive Manufacturing: Engine components, chassis connections, and body assembly.
• Construction and Infrastructure: Steel structures for bridges, wind turbine towers, and building curtain walls.
• Home Appliances and Piping: Sealed connections for washing machines, faucets, and gas pipelines.
• Aerospace: Precision instruments and aircraft components, using special alloy materials to ensure reliability.