Overview
The DIN 25201 Double Lock Washer is engineered to provide a permanent, vibration-proof locking mechanism for critical bolted connections. Manufactured from high-grade 65Mn carbon steel, this washer delivers exceptional tensile strength and spring force. Its specialized double-lobed design creates a powerful, self-locking action that resists loosening under extreme dynamic loads and vibration, making it a superior alternative to standard flat or split washers. The application of a Dacromet finish ensures long-term corrosion resistance in harsh industrial and outdoor environments.
Key Features
Permanent locking action prevents bolt and nut rotation High spring force from 65Mn carbon steel construction Superior vibration and shock resistance Dacromet finish for excellent corrosion protection Conforms to DIN 25201 industrial standard Designed for heavy-duty and high-stress applications
Specifications
Material: Carbon Steel Material Grade: 65Mn Finish: Dacromet Bore Diameter: 1.25 inches Thickness: 0.25 inches System of Measurement: Metric Thread Size: Not Applicable
Applications
Heavy machinery and equipment assembly Structural steel connections Railway and transportation vehicle manufacturing Mining and construction equipment Agricultural machinery Industrial plant maintenance and repair This washer is packaged in quantities of 36 for convenient inventory management and job site use.








