S-91280A580 M8 x 180 mm ISO 4014, DIN 931, SAE J1199, ISO 898 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior load-bearing capacity with Class 8.8 strength rating and 110,000 PSI tensile strength for reliable performance in demanding applications
• Enhanced corrosion resistance through zinc plating, extending service life in various industrial environments
• Optimized torque transmission with external hex drive and 13mm head width for secure installation and removal
• Secure fastening in coarse materials with M8x1.25 coarse thread pattern and right-hand threading for efficient engagement
• Reduced assembly weight and material usage through partial threading design while maintaining structural integrity
• Consistent dimensional accuracy with Class 6h thread fit ensuring precise mating with corresponding nuts
• Proven durability with Rockwell C21 hardness providing excellent resistance to wear and deformation

Professional Applications & Engineering Value

This M8 hex head screw delivers exceptional engineering value in industrial settings where vibration resistance and structural integrity are paramount. The Class 8.8 steel construction provides reliable performance in machinery assembly, structural frameworks, and heavy equipment applications. The zinc plated finish offers essential corrosion protection for environments exposed to moisture or chemical agents, while the coarse thread pattern ensures rapid installation and secure holding power in softer materials or where vibration loosening is a concern. The partial threading design optimizes the fastener for applications requiring precise clamp load distribution, making it ideal for construction, automotive, and manufacturing sectors where high tensile strength and dimensional consistency are critical for operational safety and longevity.

Specification Summary & Compliance

This metric hex head screw features precise M8x1.25 coarse threading with Class 6h thread fit tolerance and partial threading extending 22mm minimum. Manufactured to exacting standards including ISO 4014, DIN 931, and SAE J1199 specifications, ensuring dimensional consistency and mechanical properties. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest industry requirements for hazardous substance restrictions and chemical safety standards.