S-91294A593 M18 x 80 mm DIN 7991, ISO 10642 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Class 10.9 strength rating and 120,000 psi tensile strength for reliable performance in high-stress applications
• Superior corrosion resistance through black-oxide coating on alloy steel, extending service life in demanding industrial environments
• Precise flush mounting with standard 90° countersink angle and flat head design for seamless surface integration
• High-torque installation capability featuring 12mm hex drive for secure fastening and reduced tool slippage
• Optimized thread engagement with M18 coarse threading (2.5mm pitch) and Class 6g tolerance for quick assembly and vibration resistance
• Consistent mechanical properties maintained through Rockwell C32 hardness for dimensional stability under load
• Full regulatory compliance meeting RoHS 3 and REACH environmental standards for global manufacturing applications

Professional Applications & Engineering Value

These M18 flat head screws deliver critical engineering solutions where surface flushness and high clamping force are paramount. The black-oxide alloy steel construction provides superior protection against corrosion in manufacturing equipment, automotive assemblies, and structural frameworks. The fully threaded metric coarse design ensures maximum thread contact throughout the 80mm length, distributing stress evenly and preventing joint failure in vibrating environments. With hex drive compatibility and standardized DIN 7991/ISO 10642 dimensions, these fasteners enable rapid installation in high-volume production while maintaining the precise alignment required for machinery and heavy-duty enclosures. The combination of Class 10.9 strength and controlled hardness makes them ideal for permanent installations where disassembly is infrequent but reliability is non-negotiable.

Specification Summary & Compliance

Manufactured to DIN 7991 / ISO 10642 specifications with Class 6g thread tolerance for precision fit. The metric coarse thread (M18 x 2.5mm) provides optimal engagement in various materials. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Mechanical properties include Rockwell C32 hardness and 120,000 psi tensile strength consistent with Class 10.9 requirements. Standard 90° countersink angle ensures proper seating in matched chamfered holes.