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Helical Insert W.TEC® INSERT COIL | Free Running Design | M4 Thread | 10 PCS | by Wurth

BRAND: Wurth
SKU: 4627412
$4.10 List price: $5.20
10 PCS ($0.41 per PCS)
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Helical insert W.TEC® INSERT COIL is designed for creating durable, heavy-duty female threads, ideal for repairing and reinforcing damaged internal threads in low-strength metals and plastics. Made from corrosion-resistant A2 stainless steel, this insert minimizes thread friction and torsional stress, making it perfect for automotive and industrial applications.

Product Name/Title: Helical Insert W.TEC® INSERT COIL | Free Running Design | M4 Thread | 10 PCS | by Wurth

Brand: Wurth

SKU: 4627412

Alternatively Known As: Thread Repair Insert, Threaded Coil Insert, Helical Thread Insert, Threaded Coil, Thread Repair Coil

Technical Specifications
  • Material: Stainless steel A2
  • Surface: Plain
  • Design: Free running
  • Thread type x nominal diameter: M4
  • Length built-in state (l1): 12 mm
  • Outer diameter (d1): 5 mm
  • Thread form: Standard metric thread
  • Pitch: 0.7 mm
  • Core hole diameter: 4.2 mm
  • Minimum core hole depth: 15.15 mm
  • Required thread depth at stud hole: 14.45 mm
  • Dimensions (H x L x W): 12mm x 12mm x 5mm
  • Weight: 0.02 kg
Key Features
  • Produces lasting, heavy-duty female threads
  • Free running, true to gauge thread
  • Made of A2 stainless steel for increased corrosion resistance
  • Optimal force distribution and flexibility compensates for pitch and angle errors
  • Minimised thread friction torque and torsional stress
  • Space and weight minimisation with fewer required connection points
  • Reinforces threads to minimise repair costs
Professional Installation Requirements
  • Installation requires proper tools and knowledge of thread repair techniques; professional installation recommended for critical applications.
Applications
  • Repair and reinforcement of damaged or worn internal threads in low-strength metals and plastics
  • Creating durable, heavy-duty female threads in mechanical assemblies
  • Use in automotive, machinery, and industrial equipment requiring strong thread connections
Standards & Compliance
  • Complies with AS/NZS 1170 – Structural Design Actions (Wind, Earthquake, Snow Loads)
Environmental Benefits
  • Extends the lifespan of components by reinforcing worn threads, reducing waste
  • Made from corrosion-resistant stainless steel, reducing the need for frequent replacements
Warranty Information

Standard manufacturer warranty against defects in materials and workmanship.

Available Now

Wurth Helical Insert W.TEC® INSERT COIL Free Running M4 Thread 10 PCS are available for immediate purchase, ideal for industrial and mechanical thread repair applications.