S-91310A131 M8 x 12 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 demanding applications
• Superior wear resistance due to Rockwell C32 hardness, ensuring long-term durability and reduced replacement frequency
• Optimized thread engagement with M8 coarse pitch (1.25mm) design for faster installation and enhanced vibration resistance
• Secure external hex drive allows for high-torque tightening with standard tools, minimizing slippage and damage risks
• Full threading along the 12mm length provides maximum grip and uniform stress distribution across connected materials
• Corrosion-resistant black steel construction maintains structural integrity in harsh industrial environments
• Global compliance assurance meeting ISO 4017, RoHS 3, and REACH standards for quality and environmental safety

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this Class 10.9 hex head screw delivers critical reliability where failure is not an option. The high-strength steel material combined with fully threaded M8 coarse pitch design ensures superior clamping force and vibration resistance in machinery, automotive assemblies, and structural frameworks. The external hex drive facilitates efficient installation with common tools, reducing assembly time while maintaining precise torque control. Its black surface treatment provides an additional layer of corrosion protection, extending service life in challenging environments. By adhering to ISO 4017 specifications (equivalent to DIN 933), this metric fastener guarantees dimensional accuracy and interchangeability in global engineering projects, making it an ideal choice for OEMs and maintenance teams seeking durable, high-performance industrial fasteners.

Specification Summary & Compliance

This M8 x 1.25mm hex head screw features Class 6g thread fit tolerance for precise engagement and complies with ISO 4017 manufacturing standards. The 12mm fully threaded length and right-hand thread direction ensure consistent performance. It is verified to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for eco-conscious industrial supply chains.