S-90447A750 M12 x 220 mm DIN 931 High-Strength Metric Class 10.9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Class 10.9 strength grade and 150,000 psi tensile strength for reliable performance in demanding applications
• Superior corrosion resistance and durability thanks to high-strength steel construction and black protective finish
• Easy installation and removal with standard 19mm external hex head design requiring common tools
• Optimized thread engagement through coarse 1.75 mm pitch and Class 6g thread fit for secure fastening in various materials
• Versatile partial threading allowing for both clamping and alignment functions in complex assemblies
• Regulatory compliance assurance meeting DIN 931 specifications and environmental standards including RoHS 3 and REACH
• Consistent dimensional accuracy with precise metric M12 x 1.75 threading and 220mm length for reliable interchangeability

Professional Applications & Engineering Value

This M12 hex head screw delivers critical engineering value in heavy-duty industrial applications where failure is not an option. The Class 10.9 steel construction provides exceptional resistance to vibration loosening and mechanical stress, making it ideal for construction equipment, machinery frames, and structural assemblies. The partially threaded design combines the benefits of precise thread engagement in tapped holes with smooth shank sections that resist shear forces. With coarse metric threading and external hex drive, installation remains straightforward even in confined spaces or high-volume production environments. The screw's high tensile strength and Rockwell C32 hardness ensure long-term reliability in applications subjected to dynamic loads and harsh operating conditions.

Specification Summary & Compliance

This metric hex head screw features precise M12 x 1.75 mm coarse threading with Class 6g thread tolerance for consistent fit and performance. Manufactured to DIN 931 specifications, the fastener maintains dimensional accuracy with a 19mm hex head, 7.5mm head height, and 220mm overall length. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industries. The right-hand thread direction and partial threading (minimum 30mm thread length) provide standardized fastening solutions for professional applications requiring Class 10.9 strength grade performance.