S-90447A122 M16 x 220 mm DIN 931 High-Strength Metric Class 10.9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 150,000 psi tensile strength for reliable performance in high-stress applications
• Superior corrosion resistance and durability through hardened steel construction with Rockwell C32 hardness
• Optimized installation efficiency with external hex drive design providing secure tool engagement and torque transmission
• Enhanced vibration resistance through coarse 2mm pitch threading that maintains secure fastening in dynamic environments
• Precise dimensional compliance with Class 6g thread fit ensuring consistent performance and interchangeability
• Reduced material costs through partial threading design that minimizes unnecessary threaded sections
• Environmental regulation compliance meeting RoHS 3 and REACH standards for sustainable procurement

Professional Applications & Engineering Value

This M16 hex head screw delivers critical engineering solutions for heavy-duty applications where high tensile strength and reliability are paramount. The Class 10.9 steel construction provides exceptional resistance to shear forces and fatigue, making it ideal for structural connections in construction frameworks, industrial machinery assembly, and transportation equipment. The coarse 2mm pitch metric thread ensures rapid installation while maintaining vibration resistance in dynamic environments. With partial threading optimizing the strength-to-weight ratio, this DIN 931 compliant fastener eliminates unnecessary threaded sections, reducing material costs without compromising performance. The external hex drive design facilitates high-torque installation in confined spaces, while the 220mm length accommodates thick material assemblies common in industrial settings.

Specification Summary & Compliance

This metric hex head screw features precise Class 6g thread fit tolerance per ISO standards, ensuring consistent engagement and interchangeability. Manufacturing strictly adheres to DIN 931 specifications for dimensional accuracy and mechanical properties. The fastener demonstrates full compliance with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) environmental regulations, meeting current industry standards for sustainable manufacturing practices and workplace safety requirements.