S-91180A390 M12 x 50 mm ISO 8676, DIN 961 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating for extended service life in demanding environments
• Exceptional mechanical strength with Class 8.8 rating and 110,000 psi tensile strength for heavy-duty applications
• Precise thread engagement with Class 6h fit and extra fine 1.25mm pitch ensuring vibration resistance and secure fastening
• Optimized installation efficiency through external hex drive and standard 19mm head for common tool compatibility
• Full thread coverage along the 50mm length provides maximum grip and load distribution
• Reliable hardness performance with Rockwell C21 rating maintaining structural integrity under stress
• Global compliance assurance meeting ISO 8676, DIN 961, RoHS 3, and REACH standards for international projects

Professional Applications & Engineering Value

This M12 hex head screw delivers critical engineering solutions where vibration resistance and corrosion protection are paramount. The extra fine 1.25mm pitch metric thread creates more thread contact points per unit length, significantly enhancing joint stability in machinery subjected to dynamic loads and thermal cycling. The Class 8.8 steel construction combined with zinc plating addresses common industrial challenges of material fatigue and environmental degradation. Engineers specify these fully threaded fasteners for precision equipment assembly, automotive subsystems, and structural frameworks where the external hex drive enables high-torque installation without stripping. The combination of Rockwell C21 hardness and controlled tensile strength ensures predictable failure points while maintaining fastener integrity under extreme operational conditions.

Specification Summary & Compliance

Manufactured to precise Class 6h thread fit tolerances per ISO 8676 and DIN 961 specifications, ensuring dimensional consistency across production batches. The metric right-hand thread with extra fine spacing (1.25mm pitch) maintains compatibility with standard industrial components. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmental safety and material traceability. The 50mm length and fully threaded design provide uniform stress distribution while the 19mm hex head accommodates standard wrench sizes for streamlined installation processes.