S-91280A530 M8 x 20 mm ISO 4017, DIN 933, SAE J1199, ISO 898 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating, extending service life in demanding industrial environments
• High tensile strength (110,000 PSI) and Class 8.8 rating ensure reliable performance under heavy loads
• Rockwell C21 hardness provides excellent wear resistance and durability
• Fully threaded M8 coarse thread delivers faster assembly and stronger holding power
• External hex drive design allows for easy installation with standard tools and high torque application
• Precision Class 6h thread fit guarantees consistent engagement and vibration resistance
• Compliance with ISO 4017, DIN 933, and SAE J1199 ensures international quality and interchangeability

Professional Applications & Engineering Value

This M8 hex head screw is engineered to solve critical fastening challenges in industrial applications where vibration, heavy loads, and environmental exposure are concerns. The Class 8.8 steel construction combined with zinc plating provides a robust solution that resists corrosion and maintains integrity under stress. The fully threaded metric coarse thread (M8x1.25) ensures rapid installation and superior grip in materials like metal, machinery frames, and structural assemblies. Its external hex drive facilitates high-torque tightening with common tools, reducing assembly time while meeting stringent ISO 4017 and DIN 933 standards for dimensional accuracy and performance reliability in automotive, construction, and manufacturing sectors.

Specification Summary & Compliance

This fastener features Class 6h thread fit per metric standards, ensuring precise tolerance and consistent performance. It complies with ISO 4017, DIN 933, and SAE J1199 specifications for dimensional and mechanical properties. Additionally, it is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for industrial use worldwide.