Double Spring Lock Washers — Vibration-Resistant Fastening Solution
Product Overview
Our double spring lock washers (also called dual-coil lock washers) provide superior anti-loosening performance for bolts and screws under high vibration or dynamic loads. The dual-spring design creates constant tension, ensuring a secure grip even in extreme conditions.
Precision-engineered from high-strength materials, these washers are ideal for demanding industrial applications where vibration resistance is critical.
Key Features
High-Tension Dual-Coil Design – Two interlocking springs maintain constant pressure to prevent loosening under vibration.
Reusable & Durable – Made from hardened carbon steel (Grade 8.8/10.9) or stainless steel (A2/A4) for corrosion resistance.
Wide Compatibility – Available in sizes M4 to M20, compliant with DIN 128, ISO 7980.
Industrial-Grade Performance – Ideal for automotive, machinery, construction, and aerospace applications.
How It Works
The two interlocking coils generate radial tension against the bolt head and mating surface, resisting rotational forces caused by vibration or thermal cycling. Unlike single-coil washers, the double-spring design provides twice the retention force for enhanced reliability.
Technical Specifications
| Property | Details |
|---|---|
| Standards | DIN 128, ISO 7980, ANSI B18.21.1 |
| Materials | Carbon steel (zinc-plated/blued), Stainless steel (A2/A4) |
| Temperature Range | -30°C to +250°C (stainless steel variants available for extreme conditions) |
Why Choose Our Lock Washers?
✅ Tested for Reliability – Validated performance under vibration (DIN 25201) and torque tests.
✅ Global Compliance – Meets EU/US industrial standards for safety-critical applications.
✅ Longer Service Life – Engineered to withstand harsh environments without losing clamping force.
Applications: Automotive assemblies, heavy machinery, structural fastening, aerospace components, and more.
Available Upon Request: Custom sizes, material coatings, and OEM-specific configurations.
