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M20 Serrated Lock Washer | Spring Steel | Corrosion Protection | by Wurth
The M20 Serrated Lock Washer is designed for secure fastening in mechanical assemblies, featuring a durable spring steel construction and a serrated design for embedding locking function. Ideal for automotive and industrial applications, this washer ensures reliable performance with a corrosion protection period of 720 hours, making it a perfect choice for long-lasting installations.
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Product Name/Title: M20 Serrated Lock Washer | Spring Steel | Corrosion Protection | by Wurth
Brand: Wurth
SKU: 40120
Alternatively Known As: M20 Lock Washer, Serrated Lock Washer, Spring Steel Lock Washer, Embedding Lock Washer
Technical Specifications
- Suitable for screw thread: M20
- Internal diameter (d1): 21 mm
- Outer diameter (d2): 40 mm
- Height (h1): 4.3 mm
- Thickness (s1): 3 mm
- Material: Spring steel
- Min./max. Vickers hardness, HV: 420-510 HV
- Surface: Flake zinc silver
- RoHS-compliant: Yes
- Corrosion protection period: 720 h
- Form: M
- Locking device operating principle: Serrated lock washer
- Locking function: Embedding locking device
- Dimensions (H x L x W): 4.3mm x 40mm x 40mm
- Weight: 0.1 kg
Key Features
- Made from durable spring steel
- Serrated lock washer design for embedding locking function
- Flake zinc silver surface for corrosion protection
- RoHS-compliant
- Corrosion protection period of 720 hours
Professional Installation Requirements
- Installation by a qualified technician or engineer is recommended to ensure proper fastening and locking performance.
Applications
- Used in mechanical assemblies requiring secure fastening with M20 screw threads
- Ideal for automotive, industrial machinery, and construction applications
Standards & Compliance
- Complies with AS/NZS 1170 – Structural Design Actions (Wind, Earthquake, Snow Loads)
Environmental Benefits
- RoHS-compliant ensuring reduced hazardous substances
- Long corrosion protection reduces replacement frequency and waste
Warranty Information
Standard manufacturer warranty against defects applies.
Available Now
The Wurth M20 serrated lock washer is available now for immediate purchase. Ideal for secure fastening in industrial and mechanical applications.
