S-90447A520 M10 x 210 mm DIN 931 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 industrial applications, reducing the risk of fastener failure.
• High-strength Class 10.9 grade steel with Rockwell C32 hardness provides superior durability and resistance to wear, extending service life in demanding environments.
• Partially threaded design allows for precise clamping force control and secure fastening in assemblies where unthreaded shank strength is critical.
• Coarse M10 x 1.5 mm metric thread with Class 6g fit enables quick installation and excellent grip in various materials, minimizing cross-threading risks.
• External hex head drive offers easy tool engagement and high torque application, speeding up assembly and disassembly processes.
• Compliance with DIN 931 standards guarantees dimensional accuracy and interchangeability, ensuring consistent quality in metric fastener systems.
• RoHS 3 and REACH compliant construction meets strict environmental regulations, making it suitable for global supply chains and eco-conscious industries.

Professional Applications & Engineering Value

This M10 hex head screw is engineered to address critical challenges in heavy-duty machinery, construction, and automotive assemblies where vibration resistance and load-bearing capacity are paramount. The Class 10.9 steel material, combined with a Rockwell C32 hardness, prevents deformation under extreme forces, while the partially threaded configuration enhances fatigue resistance by concentrating stress on the threaded section. The coarse metric thread with 1.5 mm pitch ensures reliable engagement in coarse-grained materials, reducing installation time and improving joint integrity. Ideal for structural frameworks and equipment mounting, this black steel fastener delivers consistent performance in corrosive-prone settings, supported by its external hex drive for efficient maintenance.

Specification Summary & Compliance

This screw adheres to precise dimensional tolerances, including a Class 6g thread fit per ISO metric standards, ensuring compatibility with nuts and tapped holes. It conforms to DIN 931 specifications for hex head bolts, covering head dimensions (17 mm width, 6.4 mm height) and thread length (45 mm min.). Regulatory compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming the absence of hazardous substances for safe use in industrial and consumer products.