The DIN25201 wedge lock washers are precision-engineered fastening components designed to prevent bolt loosening under vibration and dynamic loads. These washers utilize a unique wedge-locking mechanism that increases clamping force when subjected to vibration, making them ideal for critical applications where bolt security is paramount.
Manufactured from high-grade 65Mn spring steel, our DIN25201 washers undergo strict quality control to ensure consistent hardness (HRC 45-48) and durability. The standard Dacromet surface treatment provides excellent corrosion resistance, withstanding 500+ hours in salt spray tests.

Available in a comprehensive size range from M3 to M80, these washers feature:
- Wedge angle design for positive locking action
- Reusable construction for maintenance applications
- Temperature resistance from -196°C to +800°C
- Compatible with standard wrench sizes

The washers are supplied in pairs with mating surfaces pre-glued for installation convenience. Each pair creates a self-locking system that maintains tension without requiring special tools or additional fasteners.
Applications include:
- Heavy equipment and machinery
- Structural steel connections
- Transportation infrastructure
- Energy generation systems
- Industrial processing equipment
Rapid shipping and excellent packaging ensured my order arrived safely and on time. The quality of these washers is impressive, with sturdy construction that meets high standards. Customer service was responsive and helpful throughout the process, making the entire experience smooth and reliable. Overall, a great supplier for industrial needs.
Logistics were handled exceptionally well, with the order arriving ahead of schedule and in perfect condition. The quality of the washers is outstanding, showing no signs of wear or defects, which speaks volumes about the rigorous testing they undergo. Service from the supplier was prompt and professional, with clear communication throughout the process. Overall, a highly reliable and efficient experience that I would recommend to others in the industry.