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Serrated Locking Nut M4 | Steel Class 8 | Zinc-Plated & Blue Passivated | @Pack of 100 | by Wurth

BRAND: Wurth
SKU: 39404
$55.30 List price: $69.60
100 PCS ($0.55 per PCS)
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Serrated Locking Nut M4 is designed for secure fastening in mechanical assemblies, featuring a serration locking mechanism that prevents self-loosening. Made from high-strength steel with a property class of 8, this nut is zinc-plated and blue passivated for enhanced corrosion resistance, making it ideal for automotive, machinery, and industrial applications.

Product Name/Title: Serrated Locking Nut M4 | Steel Class 8 | Zinc-Plated & Blue Passivated | @Pack of 100 | by Wurth

Brand: Wurth

SKU: 39404

Alternatively Known As: Serrated Lock Nut, Locking Nut M4, Zinc Plated Lock Nut, Blue Passivated Nut, Mechanical Lock Nut

Technical Specifications
  • Thread type x nominal diameter (D): M4
  • Height (h1): 4 mm
  • Flange diameter (dc): 10.41 mm
  • External drive (s1): WS7
  • Standards: DIN 6923 similar (replaced by EN 1661)
  • Material: Steel
  • Property class: 8
  • Surface: Zinc plated, blue passivated
  • Locking device operating principle: Serration
  • Locking function: Locking against self-loosening by mechanical interlocking
  • Pitch: 0.7 mm
  • Dimensions (H x L x W): 4mm x 7mm x 7mm
  • Weight: 0.02 kg
Key Features
  • Serration locking mechanism prevents self-loosening by mechanical interlocking
  • Steel material with property class 8 for high strength
  • Zinc-plated with blue passivation for corrosion resistance
  • RoHS-compliant ensuring environmental safety
Professional Installation Requirements
  • Installation by qualified personnel recommended to ensure proper torque and locking function.
Applications
  • Mechanical assemblies requiring secure fastening
  • Automotive and machinery components
  • Industrial equipment and construction
Standards & Compliance
  • Complies with AS/NZS 4801 – Occupational Health & Safety Management Systems
Environmental Benefits
  • RoHS-compliant material reduces hazardous substances
  • Durable zinc plating extends product life reducing waste
Warranty Information

Standard manufacturer warranty against defects applies.

Available Now

Wurth Serrated Locking Nut M4 Class 8 Zinc-Plated Blue Passivated 100 PCS is available for immediate purchase, ideal for industrial and mechanical fastening applications.