S-91274A163 M12 x 20 mm ASTM B117, DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance under extreme loads, reducing the risk of fastener failure in critical applications.
• Superior corrosion resistance from the zinc-flake coating protects against harsh industrial environments, extending service life and reducing maintenance costs.
• High hardness (Rockwell C37) provides excellent wear resistance, maintaining thread integrity and drive engagement through repeated use.
• Precision Class 5g6g thread fit ensures smooth installation and secure fastening, minimizing assembly time and improving joint reliability.
• Wide regulatory compliance including RoHS 3 and REACH guarantees environmental safety and global market acceptability for your projects.
• Coarse thread pitch (1.75mm) enables quicker installation and better vibration resistance compared to fine-thread alternatives.
• Standard hex socket drive allows for high torque application with common tools, preventing stripping and ensuring consistent clamping force.

Professional Applications & Engineering Value

This Class 12.9 socket head cap screw delivers exceptional engineering value where high clamp load and vibration resistance are critical. The zinc-flake-coated alloy steel construction solves common industrial challenges by providing superior corrosion protection that outperforms standard plating, making it ideal for automotive assemblies, heavy machinery, and outdoor equipment exposed to moisture and chemicals. The fully threaded M12 metric design with coarse 1.75mm pitch ensures rapid installation in high-volume production while maintaining secure fastening in vibrating environments. Meeting ISO 4762 and DIN 912 standards guarantees dimensional precision and interchangeability, reducing sourcing complications for global engineering teams requiring reliable industrial fasteners.

Specification Summary & Compliance

This socket head cap screw features precise Class 5g6g thread fit tolerance per metric standards, ensuring consistent engagement. Manufacturing complies with ISO 4762 and DIN 912 specifications for dimensional accuracy, while corrosion testing meets ASTM B117 requirements. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for industrial applications worldwide.