Overview
This DIN 25201 double tab lock washer is a precision-engineered fastener component designed to prevent loosening in high-vibration and dynamic load environments. It provides a secure, mechanical locking action for bolts and studs, offering a reusable and maintenance-free alternative to chemical threadlockers. Manufactured to exacting DIN standards, this washer ensures consistent quality and reliable performance in critical industrial assemblies.
Key Features
Engineered to DIN 25201 specifications for guaranteed dimensional consistency and performance. Double tab locking design creates positive mechanical interference to resist rotation and back-out. Constructed from 65Mn carbon steel, providing high tensile strength and excellent fatigue resistance. Features a zinc flake coating (Dacromet) for exceptional corrosion resistance without hydrogen embrittlement risk. Reusable design allows for disassembly and reassembly without compromising locking integrity. Precision-formed for a consistent fit and reliable clamping force.
Specifications
System of Measurement: Metric Material Grade/Class: 65Mn
Material
Carbon Steel Thread Size: Not Applicable Finish: Zinc Flake Coating Shaft/Bore Diameter: 0.819 inches Outer Diameter: 1.535 inches Thickness: 0.142 inches Package Quantity: 100 washers
Applications
Ideal for securing fasteners in high-vibration machinery such as pumps, compressors, and engines. Essential for automotive and transportation assemblies, including chassis and drivetrain components. Used in heavy equipment, agricultural machinery, and construction equipment subject to dynamic stresses. Suitable for industrial plant maintenance, conveyor systems, and any application requiring a vibration-proof bolted connection.








