S-91263A842 M6 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 rating and Rockwell C32 hardness ensure reliable performance in high-stress applications, reducing fastener failure and maintenance costs.
• Superior Corrosion Resistance: Zinc-plated alloy steel construction provides excellent protection against rust and environmental degradation, extending service life in harsh industrial settings.
• Optimized Fastening Efficiency: M6 x 1 mm coarse threading and partial threading design enable quicker installation and secure holding power in various materials.
• Precise Flush Mounting: Standard flat head with 90° countersink angle allows for seamless, flush installation, improving aesthetics and safety in assembled products.
• Enhanced Torque Application: 4 mm hex drive ensures secure tool engagement and high torque transmission, minimizing stripping and simplifying assembly processes.
• Global Standard Compliance: Manufactured to DIN 7991/ISO 10642 specifications, ensuring interchangeability and reliability in international engineering projects.
• Regulatory Safety Assurance: RoHS 3 and REACH compliance guarantees environmentally safe materials, meeting strict industry and legal requirements.

Professional Applications & Engineering Value

These M6 flat head screws are engineered to address critical fastening challenges in demanding industrial applications. The zinc-plated alloy steel material, combined with a Class 10.9 strength grade and Rockwell C32 hardness, provides exceptional resistance to vibration loosening and mechanical stress, making them ideal for machinery, automotive assemblies, and structural frameworks. The coarse thread and partial threading enhance grip in soft materials and allow for adjustable clamping force, while the 90° countersink angle ensures a smooth, flush finish that prevents snagging and improves aerodynamic or aesthetic profiles. With a tensile strength of 120,000 psi, these screws deliver reliable performance in heavy-duty environments, reducing downtime and ensuring long-term operational integrity.

Specification Summary & Compliance

This fastener features precise M6 x 1 mm coarse threading with a Class 6g thread fit for consistent engagement and tolerance. It complies with DIN 7991/ISO 10642 standards, ensuring dimensional accuracy and manufacturing consistency. Regulatory adherence includes full RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming the absence of hazardous substances and supporting sustainable procurement practices.