S-92820A625 M12 x 20 mm High-Strength Metric Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide steel coating for prolonged service life in harsh industrial environments
• Superior load distribution thanks to the 24mm flange diameter, reducing surface pressure and preventing material damage
• Secure anti-loosening performance from integrated serrations that maintain tight fastening under vibration and dynamic loads
• High tensile strength of 130,000 psi ensures reliable fastening in demanding mechanical applications
• Precise Class 6g thread fit guarantees smooth assembly and consistent engagement with mating components
• Rockwell C27 hardness provides excellent wear resistance and durability for repeated use
• External hex drive design allows for easy installation and removal with standard tools, improving maintenance efficiency

Professional Applications & Engineering Value

This M12 hex head screw with metric coarse thread 1.75mm pitch is engineered to address common industrial fastening challenges, such as joint integrity under vibration and corrosion in outdoor or chemically exposed settings. The black-oxide steel material offers a protective layer that resists rust, while the fully threaded design ensures maximum grip length for secure attachments in machinery, automotive assemblies, and structural frameworks. The inclusion of serrations for locking and a flanged head enhances stability, distributing clamp load effectively to prevent loosening and surface indentation. Ideal for heavy-duty applications, these screws provide consistent performance in construction, manufacturing, and equipment maintenance, where high tensile strength and compliance with environmental regulations are critical.

Specification Summary & Compliance

This product adheres to metric coarse thread standards with a precise Class 6g thread fit for accurate mating. It features a fully threaded M12 x 1.75mm design, right-hand thread direction, and external hex drive for standardized tool compatibility. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use.