S-91280A206 M12 x 40 mm ISO 4017, DIN 933 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior load-bearing capacity with Class 8.8 strength grade and 110,000 psi tensile strength for reliable performance in demanding applications
• Enhanced durability and wear resistance thanks to Rockwell C21 hardness, ensuring long service life under repetitive stress
• Wide compatibility and easy installation with M12 coarse thread (1.75mm pitch) and external hex drive for efficient assembly using standard tools
• Full-length threading provides consistent clamping force and secure fastening across the entire 40mm length
• Precision manufacturing to ISO 4017/DIN 933 standards with Class 6g thread fit for accurate, vibration-resistant connections
• Environmental and regulatory compliance with RoHS 3 and REACH, making them safe for various industrial and international markets
• Robust steel construction with black finish offers excellent corrosion resistance and suitability for heavy-duty environments

Professional Applications & Engineering Value

Engineered for heavy-duty industrial and construction applications, these M12 hex head screws address critical challenges such as joint integrity under high vibration and dynamic loads. The Class 8.8 steel construction ensures reliable tensile strength, while the coarse thread design facilitates quick installation and reduces the risk of cross-threading in rugged settings. Fully threaded along the 40mm length, they provide uniform stress distribution, minimizing loosening in machinery, structural frameworks, and automotive assemblies. Compliance with ISO 4017/DIN 933 standards guarantees dimensional accuracy, and the external hex drive allows for high-torque tightening, making them ideal for maintenance, manufacturing, and infrastructure projects where safety and longevity are paramount.

Specification Summary & Compliance

This M12 x 1.75mm x 40mm hex head screw features a Class 6g thread fit for precise tolerance, ensuring secure fastening in metric coarse thread applications. Manufactured in accordance with ISO 4017 and DIN 933 specifications, it meets rigorous quality and dimensional standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its safety for use in various industries without hazardous substances.