S-91310A157 M20 x 80 mm ISO 4017, DIN 933 High-Strength Metric Class 10.9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Class 10.9 strength grade and 150,000 psi tensile strength for reliable performance in demanding applications
• Superior wear resistance due to Rockwell C32 hardness, ensuring extended service life under repetitive stress conditions
• Optimized installation efficiency through external hex drive design and 30mm head width for secure tool engagement and torque transmission
• Enhanced vibration resistance with coarse 2.5mm pitch threads that maintain clamping force in high-vibration environments
• Precise dimensional consistency with Class 6g thread fit ensuring compatibility with standard metric nuts and components
• Full-length thread engagement providing maximum grip along the entire 80mm length for uniform stress distribution
• Regulatory compliance assurance meeting international ISO 4017/DIN 933 standards while being RoHS 3 and REACH compliant

Professional Applications & Engineering Value

This M20 hex head screw delivers critical engineering solutions for industrial applications where high tensile strength and vibration resistance are paramount. The Class 10.9 steel construction with Rockwell C32 hardness ensures reliable performance in heavy machinery, structural steel connections, and equipment subjected to dynamic loads. The fully threaded metric bolt design with coarse 2.5mm pitch provides superior resistance to loosening in high-vibration environments common in manufacturing, construction, and automotive applications. The external hex drive configuration allows for high-torque installation using standard tools, while the ISO 4017/DIN 933 compliance guarantees dimensional accuracy and interchangeability across global industrial standards.

Specification Summary & Compliance

This metric hex head screw features precise M20x2.5 coarse thread with Class 6g tolerance, 80mm fully threaded length, and meets ISO 4017/DIN 933 manufacturing specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. Manufactured to exacting standards, this Class 10.9 high-strength bolt maintains consistent dimensional accuracy and mechanical properties for reliable performance in critical fastening applications.