S-97478A109 M12 x 70 mm DIN 6914, ISO 7412 Metric High-Strength Steel Heavy Hex Head Screws for Structural Applications

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with hot-dipped galvanized steel coating, ideal for harsh industrial environments and outdoor applications.
• Superior mechanical strength with Class 10.9 rating and 150,000 psi tensile strength, ensuring reliable performance under high-stress conditions.
• Optimized load distribution from the coarse M12 x 1.75mm thread, providing excellent grip and vibration resistance in structural assemblies.
• Enhanced durability with Rockwell C32 hardness, maintaining structural integrity and preventing deformation during installation.
• Secure and efficient installation using a standard 21mm external hex drive, compatible with common tools for quick assembly.
• Precise thread fit with Class 6g tolerance, ensuring smooth engagement and reducing the risk of cross-threading.
• Compliance with international standards including DIN 6914/ISO 7412, RoHS 3, and REACH, guaranteeing safety and regulatory adherence.

Professional Applications & Engineering Value

This M12 hex head screw is engineered for demanding industrial applications where corrosion resistance and high tensile strength are critical. The hot-dipped galvanized steel construction provides a robust barrier against moisture and chemicals, making it suitable for construction, machinery, and infrastructure projects exposed to harsh conditions. The coarse metric thread (1.75mm pitch) ensures rapid installation and reliable holding power in steel and other heavy materials, reducing assembly time while maintaining joint integrity. With a partially threaded design and 70mm length, it offers optimal grip length for secure fastening in structural connections, minimizing the risk of loosening under dynamic loads. This screw delivers consistent performance in heavy-duty applications, from manufacturing equipment to renewable energy installations, by combining material durability with precise engineering standards.

Specification Summary & Compliance

This fastener features M12 x 1.75mm coarse threads with a Class 6g thread fit for precise dimensional accuracy. It complies with DIN 6914 and ISO 7412 specifications, ensuring consistent quality and interchangeability. The product is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for industrial use.