S-91052A118 M12 x 40 mm ISO 8676, DIN 961 High-Strength Metric Class 10.9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 150,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior corrosion resistance from zinc yellow-chromate plating extends service life in harsh or outdoor environments, minimizing maintenance needs.
• High hardness rating (Rockwell C32) provides excellent wear resistance and durability under repeated loads and vibrations.
• Precision extra-fine threading (1.25mm pitch) offers enhanced grip and load distribution, ideal for fine adjustments and secure fastening in critical assemblies.
• Fully threaded design allows for maximum engagement along the entire length, improving holding power and versatility in various material thicknesses.
• External hex head drive enables easy installation and high torque application with standard tools, speeding up assembly processes.
• Compliance with ISO 8676/DIN 961 standards guarantees consistent quality, dimensional accuracy, and interchangeability for global engineering projects.

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these M12 hex head screws in Class 10.9 deliver robust performance where reliability is non-negotiable. The steel material combined with zinc yellow-chromate plating effectively combats corrosion, making them suitable for machinery, automotive, and construction applications exposed to moisture or chemicals. The extra-fine metric thread (1.25mm pitch) and Class 6h thread fit ensure precise, vibration-resistant connections, addressing common issues like loosening under dynamic loads. With a fully threaded design and external hex drive, they facilitate quick, secure installations in heavy-duty assemblies, enhancing operational efficiency and reducing downtime in B2B procurement scenarios.

Specification Summary & Compliance

This product adheres to strict dimensional tolerances, including Class 6h thread fit for metric applications, and meets ISO 8676 and DIN 961 specifications for quality assurance. It complies with industry standards for material and manufacturing, ensuring reliability in tensile strength and hardness. Additionally, the zinc yellow-chromate finish supports RoHS and REACH environmental directives, providing a safe and sustainable option for global industrial use.