S-91294A566 M20 x 160 mm DIN 7991 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 thanks to black-oxide coating on alloy steel, extending service life in demanding industrial environments
• Optimized installation efficiency with hex drive design and coarse 2.5mm pitch threads for faster assembly and reduced operator fatigue
• Precise flush mounting enabled by standard 90° countersink angle and flat head profile for seamless surface integration
• Consistent thread engagement through Class 6g thread fit and full threading along the 160mm length for uniform clamping force distribution
• Enhanced durability with Rockwell C32 hardness providing excellent resistance to wear and deformation under repeated loads
• Global compliance assurance meeting DIN 7991 specifications plus RoHS 3 and REACH environmental regulations for international project suitability

Professional Applications & Engineering Value

This M20 flat head hex screw delivers critical engineering solutions for heavy machinery, structural steel frameworks, and industrial equipment assembly. The black-oxide alloy steel construction combined with Class 10.9 strength rating addresses common failure points in vibration-intensive environments by maintaining clamp load under dynamic stresses. The fully threaded metric design with coarse 2.5mm pitch ensures rapid installation in thick materials while the hex drive provides superior torque transmission compared to standard screw heads. The 90° countersink angle creates clean, flush surfaces in predrilled applications, eliminating protrusions in safety-critical assemblies. These features make it ideal for construction, automotive, and manufacturing sectors where high tensile strength and regulatory compliance are mandatory.

Specification Summary & Compliance

This fastener maintains Class 6g thread fit tolerance per metric standards with M20x2.5mm coarse threading and right-hand thread direction. Manufacturing conforms to DIN 7991 specifications for dimensional accuracy and performance consistency. The product is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety, verified through current compliance documentation.