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Hex Flange Bolt M4 | Zinc Plated Steel | Serration Locking Device | by Wurth
The Hex Flange Bolt M4 is designed for secure fastening in mechanical assemblies, featuring a zinc plated steel construction for corrosion resistance and a serration locking device to prevent self-loosening. Ideal for industrial machinery, automotive repairs, and general construction, this bolt ensures high strength with a property class of 8.8, making it a reliable choice for various applications.
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Product Name/Title: Hex Flange Bolt M4 | Zinc Plated Steel | Serration Locking Device | by Wurth
Brand: Wurth
SKU: 2740420
Alternatively Known As: Hex flange bolt M4, Zinc plated hex bolt, Serrated flange bolt, Metric hex bolt M4x20
Technical Specifications
- Thread type x nominal diameter (d1): M4
- Length (l1): 20 mm
- Head diameter (dc): 10 mm
- Head height (k1): 4.2 mm
- Standards: WN 274
- Material: Steel
- Property class: 8.8
- Surface: Zinc plated
- Locking device operating principle: Serration
- Locking function: Locking against self-loosening by mechanical interlocking
- Head type: Hexagon head with flange
- Drive type: Outer hexagon
- External drive (s1): WS7
- Thread type: Metric thread
- Pitch: 0.7 mm
- Thread form: Standard metric thread
- Thread design: Full thread
- RoHS-compliant: Yes
- Dimensions (H x L x W): 4.2mm x 20mm x 10mm
- Weight: 0.1 kg
Key Features
- Hexagon head with flange for increased bearing surface
- Zinc plated steel for corrosion resistance
- Serration locking device to prevent self-loosening
- Full metric thread with 0.7 mm pitch
- Property class 8.8 for high strength
Professional Installation Requirements
- Installation by a qualified technician or tradesperson is recommended to ensure proper torque and secure fastening.
Applications
- Mechanical assemblies requiring secure fastening
- Industrial machinery and equipment
- Automotive repairs and maintenance
- General construction and manufacturing
Standards & Compliance
- Complies with AS/NZS 1170 – Structural Design Actions (Wind, Earthquake, Snow Loads)
Environmental Benefits
- RoHS-compliant material ensures reduced hazardous substances
Warranty Information
Standard manufacturer warranty against defects applies.
Available Now
The Wurth M4 x 20mm Hexagon Head Flange Bolt is available for immediate purchase, ideal for industrial, automotive, and construction fastening applications.
