S-91280A203 M12 x 25 mm ISO 4017, DIN 933 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• High tensile strength of 110,000 psi ensures reliable performance in demanding industrial applications, reducing the risk of fastener failure.
• Class 8.8 strength grade with Rockwell C21 hardness provides excellent durability and resistance to wear, extending service life in high-stress environments.
• Fully threaded M12 coarse pitch design offers superior grip and faster installation, saving time and labor costs in assembly processes.
• External hex head with 19mm width allows for easy tightening with standard tools, enhancing efficiency and reducing the need for specialized equipment.
• Black steel construction with RoHS 3 and REACH compliance ensures environmental safety and meets strict regulatory standards for global industrial use.
• ISO 4017/DIN 933 standards and Class 6g thread fit guarantee precise dimensions and interchangeability, minimizing compatibility issues in metric systems.
• Corrosion-resistant finish and right-hand threading provide consistent performance in various conditions, supporting long-term structural integrity.

Professional Applications & Engineering Value

This M12 hex head screw is engineered from high-strength steel to address common industrial challenges, such as vibration loosening and mechanical stress in heavy machinery, construction, and automotive assemblies. The fully threaded metric coarse pitch (M12x1.75) ensures rapid and secure fastening, while the external hex drive design simplifies maintenance and disassembly. With a Class 8.8 strength grade and black surface treatment, it resists corrosion and wear, making it ideal for outdoor or harsh environments. By adhering to ISO 4017 and DIN 933 standards, this fastener delivers consistent performance, reducing downtime and enhancing safety in industrial applications where reliability is critical.

Specification Summary & Compliance

This product meets precise dimensional tolerances, including Class 6g thread fit and metric coarse threading (M12x1.75), in accordance with ISO 4017 and DIN 933 standards. It is manufactured under strict guidelines for thread type, pitch, and length (25mm), ensuring compatibility and performance. Additionally, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety requirements for industrial use.