S-91294A534 M20 x 100 mm DIN 7991 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating that protects against rust and extends service life in harsh industrial environments
• Exceptional load-bearing capacity thanks to Class 10.9 high-strength alloy steel construction, ensuring reliable performance under heavy stress
• Precise installation and secure fit with Class 6g thread tolerance and fully threaded design for maximum engagement and vibration resistance
• Efficient flush mounting featuring a standard 90° countersink angle and flat head profile that sits perfectly flush with surfaces
• High-torque installation capability with 12mm hex drive that prevents stripping and enables quick, secure fastening
• Long-term reliability backed by Rockwell C32 hardness and 120,000 PSI tensile strength for durable performance in demanding applications
• Regulatory compliance assurance meeting DIN 7991 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

These M20x2.5 metric screws with coarse threading and Class 10.9 strength rating are engineered to solve critical fastening challenges in heavy machinery, structural steelwork, and industrial equipment assembly. The black-oxide alloy steel construction provides excellent corrosion protection while maintaining the high tensile strength required for load-bearing applications. The combination of fully threaded design and Class 6g fit ensures maximum thread engagement and vibration resistance, preventing loosening in dynamic environments. The flat head with 90° countersink allows for seamless flush mounting in predrilled holes, making these hex drive screws ideal for applications where surface smoothness and structural integrity are paramount. These industrial-grade fasteners deliver reliable performance in construction, manufacturing, and heavy equipment maintenance where failure is not an option.

Specification Summary & Compliance

This flat head hex screw features precise M20x2.5 coarse thread with Class 6g tolerance and right-hand threading. Manufactured from high-strength alloy steel with black-oxide surface treatment, it meets DIN 7991 specifications for dimensional accuracy and performance. The fastener complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial applications while maintaining the mechanical properties required for Class 10.9 strength classification.