S-91304A166 M10 x 40 mm DIN 7991, ISO 10642 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional Durability: Class 10.9 strength grade and Rockwell C32 hardness ensure reliable performance under high-stress conditions, reducing the risk of fastener failure.
• Superior Corrosion Resistance: Blue-dyed zinc-plated alloy steel construction provides enhanced protection against rust and environmental degradation, extending service life.
• Precise, Secure Fastening: Class 6g thread fit and coarse M10x1.5mm threading offer excellent engagement and vibration resistance in demanding applications.
• Efficient Installation: 6mm hex drive and 90° countersink angle allow for quick, flush mounting with standard tools, saving assembly time.
• Full Thread Engagement: Fully threaded design maximizes grip and load distribution along the entire 40mm length for stronger connections.
• Industry Compliance: Meets DIN 7991/ISO 10642 standards and RoHS 3/REACH regulations, ensuring quality and environmental safety.
• High Tensile Strength: 120,000 psi tensile capacity supports heavy-duty use in structural and mechanical assemblies.

Professional Applications & Engineering Value

Engineered for rigorous industrial environments, these M10 flat head screws deliver critical reliability in machinery, automotive, and construction applications. The blue-dyed zinc-plated alloy steel material combats corrosion effectively, while the Class 10.9 strength and fully threaded metric design prevent loosening under dynamic loads. The hex drive and 90° countersink angle facilitate seamless integration into pre-drilled surfaces, minimizing protrusion and enhancing safety. Ideal for assemblies requiring high tensile strength and compliance with DIN 7991/ISO 10642 standards, these screws solve common challenges like vibration-induced failures and corrosive wear, ensuring long-term operational integrity.

Specification Summary & Compliance

This fastener adheres to precise dimensional tolerances, including Class 6g thread fit and coarse thread spacing per metric standards. Manufacturing follows DIN 7991 (equivalent to ISO 10642) for flat head screw specifications, ensuring consistent quality. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets environmental and safety requirements for industrial use.