S-97478A148 M20 x 160 mm DIN 6914, ISO 7412 Metric High-Strength Steel Heavy Hex Head Screws for Structural Applications

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Class 10.9 strength grade and 150,000 psi tensile strength for reliable performance in high-stress applications
• Superior corrosion protection through hot-dipped galvanized steel coating, extending service life in harsh industrial environments
• Optimized thread engagement with Class 6g thread fit and coarse 2.5 mm pitch for faster installation and reduced cross-threading risk
• Enhanced torque transmission via external hex drive and 32 mm head width, ensuring secure tightening with standard tools
• Versatile partial threading design with 33 mm thread length and 127 mm grip length for precise clamping force distribution
• Consistent dimensional accuracy meeting DIN 6914/ISO 7412 specifications for reliable interchangeability in assembly operations
• Environmental compliance assurance with RoHS 3 and REACH regulations for sustainable procurement in regulated industries

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these M20 hex head screws deliver critical performance where vibration resistance and structural integrity are paramount. The hot-dipped galvanized steel construction provides a sacrificial zinc barrier that actively protects against rust and chemical degradation in outdoor or high-moisture environments. With Rockwell C32 hardness and Class 10.9 strength rating, these partially threaded fasteners maintain clamp load under dynamic stresses common in heavy machinery, structural steel connections, and transportation equipment. The coarse thread spacing and external hex drive enable rapid installation in field conditions while minimizing thread damage. These metric screws solve common engineering challenges by combining high tensile capacity with corrosion protection in a single DIN 6914 compliant solution.

Specification Summary & Compliance

This hex head screw features M20x2.5 metric thread with Class 6g thread fit tolerance and right-hand thread direction. Manufacturing conforms to DIN 6914 where identical to ISO 7412 standards, ensuring dimensional consistency across international projects. The fastener demonstrates full compliance with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety. With 160 mm total length and partially threaded design, this industrial-grade fastener meets rigorous quality control requirements for critical assembly applications.