S-91304A172 M12 x 25 mm DIN 7991, ISO 10642 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional durability with Class 10.9 high-strength rating and 120,000 psi tensile strength, ensuring reliable performance in high-stress assemblies.
• Superior corrosion resistance from blue-dyed zinc-plated alloy steel, extending service life in harsh industrial environments.
• Precise thread engagement with M12 coarse thread (1.75mm pitch) and Class 6g fit, enabling quick installation and secure fastening.
• Optimized drive efficiency featuring an 8mm hex drive and flat head design, providing excellent torque transfer and flush surface finish.
• Full threading along the 25mm length for maximum grip and uniform load distribution across connected materials.
• Compliance with international standards including DIN 7991/ISO 10642, ensuring consistent quality and interchangeability.
• Environmental and safety adherence with RoHS 3 and REACH compliance, supporting sustainable and safe manufacturing practices.

Professional Applications & Engineering Value

These M12 flat head screws are engineered to address critical challenges in industrial and construction settings, where vibration resistance and long-term reliability are paramount. The blue-dyed zinc-plated alloy steel construction provides a robust barrier against moisture and chemicals, reducing maintenance costs in machinery, structural frameworks, and outdoor equipment. With a Rockwell C32 hardness and coarse thread design, they prevent loosening under dynamic loads and simplify alignment in coarse-grained materials. The fully threaded 25mm length ensures deep penetration and even stress dispersion, making them ideal for heavy-duty assemblies in automotive, manufacturing, and infrastructure projects where high tensile strength and corrosion resistance are non-negotiable.

Specification Summary & Compliance

This fastener adheres to Class 6g thread fit and ISO metric standards, guaranteeing dimensional accuracy for seamless integration. It conforms to DIN 7991 / ISO 10642 specifications for flat head screws, with a 90° countersink angle and fully threaded M12 x 1.75mm coarse pitch. Regulatory compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), affirming its suitability for global markets and environmentally conscious operations.