S-91294A359 M12 x 40 mm DIN 7991, ISO 10642 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional durability with black-oxide alloy steel construction providing superior corrosion resistance for harsh industrial environments
• Maximum load-bearing capacity through Class 10.9 high tensile strength (120,000 psi) ensuring reliable performance under extreme pressure
• Precision installation with 8mm hex drive design allowing for secure tool engagement and consistent torque application
• Optimized thread engagement through coarse 1.75mm pitch and Class 6g thread fit enabling faster assembly and reduced cross-threading risks
• Flush mounting capability with 90° countersink angle and standard flat head profile creating seamless surfaces in assembled components
• Full-length fastening strength with complete threading along the 40mm length providing uniform stress distribution
• Regulatory compliance assurance meeting international standards for safety and environmental regulations

Professional Applications & Engineering Value

This M12 flat head screw delivers critical engineering solutions where high tensile strength and reliable fastening are paramount. The black-oxide alloy steel construction provides exceptional corrosion resistance, making these metric screws ideal for demanding industrial applications including heavy machinery, automotive assemblies, and structural frameworks. The coarse 1.75mm pitch threading ensures rapid installation while maintaining secure hold in various materials. With fully threaded design and Class 10.9 strength rating, these hex drive fasteners distribute stress evenly across the entire 40mm length, preventing point failures in high-vibration environments. The 90° countersink angle enables flush mounting for applications requiring aerodynamic or safety-conscious surfaces.

Specification Summary & Compliance

Manufactured to precise Class 6g thread fit tolerance standards, these screws ensure consistent performance across industrial applications. Compliance with DIN 7991/ISO 10642 manufacturing specifications guarantees dimensional accuracy and mechanical properties. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming adherence to international safety and substance restriction standards. With Rockwell C32 hardness and verified 120,000 psi tensile strength, these fasteners deliver reliable performance in accordance with their Class 10.9 strength classification.