S-90854A323 M20 x 65 mm ISO 4017, DIN 933 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 and Class 10.9 rating for reliable performance in demanding applications
• Superior corrosion resistance through zinc yellow-chromate plating, extending service life in harsh industrial environments
• Optimized thread engagement with M20 coarse thread (2.5mm pitch) and Class 6h fit ensuring secure fastening and vibration resistance
• Enhanced durability from Rockwell C32 hardness steel construction, maintaining integrity under repeated stress
• Efficient installation and removal with external hex drive and 30mm head width for standard tool compatibility
• Full-threaded design providing consistent clamping force along the entire 65mm length
• International compliance assurance meeting ISO 4017/DIN 933 specifications for global project compatibility

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these M20 hex head screws deliver critical performance where structural integrity is paramount. The Class 10.9 strength rating combined with 150,000 psi tensile strength ensures reliable fastening in construction machinery, structural steel connections, and industrial equipment assemblies. The zinc yellow-chromate plating provides superior protection against corrosion in outdoor or chemically aggressive environments, while the metric coarse threading (2.5mm pitch) enables quick installation and optimal clamping force distribution. The fully threaded design and external hex drive facilitate efficient assembly in confined spaces, making these steel fasteners ideal for applications requiring both high strength and corrosion resistance without compromising on installation efficiency.

Specification Summary & Compliance

This hex head screw features precision metric threading with M20 diameter, 2.5mm pitch, and Class 6h thread fit tolerance for consistent engagement. Manufactured from high-strength steel with Rockwell C32 hardness and Class 10.9 strength classification. The fastener complies with ISO 4017/DIN 933 specifications for dimensional accuracy and mechanical properties, ensuring interchangeability and reliability in global industrial applications. The zinc yellow-chromate finish meets industry standards for corrosion protection while maintaining compliance with RoHS and REACH environmental directives.