S-91310A538 M8 x 30 mm ISO 4014, DIN 931 High-Strength Metric Class 10.9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior load-bearing capability with Class 10.9 strength grade and 150,000 psi tensile strength for reliable performance in high-stress applications
• Enhanced corrosion resistance with black steel construction providing durable protection in industrial environments
• Optimized torque transmission through external hex drive design and 13mm head width for secure installation with standard tools
• Precision thread engagement with M8 coarse pitch (1.25mm) and Class 6g thread fit ensuring consistent fastening performance
• Versatile partial threading design allowing unthreaded shank section for improved shear strength and alignment in assemblies
• Certified industrial compliance meeting ISO 4014 (DIN 931) specifications for guaranteed dimensional accuracy and performance
• Environmental regulation adherence with RoHS 3 and REACH compliance for safe use across global markets

Professional Applications & Engineering Value

These high-strength steel hex head screws deliver exceptional engineering value in demanding industrial applications where vibration resistance and structural integrity are critical. The Class 10.9 strength rating combined with Rockwell C32 hardness ensures reliable performance in heavy machinery, automotive assemblies, and structural steel connections. The partially threaded M8 design with coarse 1.25mm pitch provides superior clamping force while preventing loosening under dynamic loads. The external hex drive configuration enables high-torque installation in confined spaces, making these metric hex bolts ideal for maintenance, manufacturing, and construction applications requiring ISO 4014 compliance and consistent fastening performance across production runs.

Specification Summary & Compliance

This M8 hex head screw features precise Class 6g thread fit tolerance and 30mm length with 22mm minimum thread length, manufactured to ISO 4014 specifications (equivalent to DIN 931). The fastener meets international regulatory requirements including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) adherence, ensuring environmental safety and material transparency. The Class 10.9 strength classification guarantees mechanical properties per international standards, providing engineers with certified performance data for critical application specifications.