S-91310A134 M8 x 80 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 for reliable performance in high-stress applications
• Superior corrosion resistance thanks to the black steel finish that provides durable protection in industrial environments
• Optimal torque transmission through the external hex drive design that prevents stripping during installation
• Enhanced thread engagement with M8 coarse pitch (1.25mm) threading that ensures secure fastening in various materials
• Consistent mechanical properties maintained through Rockwell C32 hardness for long-term reliability
• Full-threaded design that provides maximum grip length and uniform stress distribution along the entire 80mm shaft
• Global compliance assurance with RoHS 3 and REACH regulations for environmentally responsible manufacturing

Professional Applications & Engineering Value

These Class 10.9 hex head screws deliver exceptional engineering value in demanding industrial applications where failure is not an option. The high-strength steel construction combined with precise metric coarse threading (M8 x 1.25mm) provides superior resistance to vibration loosening and mechanical stress in heavy machinery, structural steel connections, and automotive assemblies. The fully threaded design ensures maximum contact surface area, distributing clamping force evenly across the entire 80mm length while the external hex drive allows for high-torque installation without cam-out. Engineered to ISO 4017/DIN 933 standards, these black steel fasteners maintain dimensional consistency and mechanical integrity in critical applications where precision and reliability are paramount.

Specification Summary & Compliance

This M8 hex head screw features precise Class 6g thread fit tolerance according to ISO metric standards, ensuring consistent engagement and proper clearances. The fastener meets ISO 4017 and DIN 933 specifications for dimensional accuracy and mechanical properties. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental responsibility and restricted substance control. Manufacturing follows international standards for Class 10.9 strength grade certification, guaranteeing 150,000 psi minimum tensile strength and Rockwell C32 hardness for reliable performance in industrial applications.