S-91280A558 M8 x 80 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

• Enhanced Durability: Class 8.8 steel construction with Rockwell C21 hardness provides reliable strength and long-term performance in demanding environments.
• Superior Corrosion Resistance: Zinc plating offers excellent protection against rust, extending the fastener's lifespan in industrial settings.
• Optimized Thread Engagement: Partially threaded design with 22mm thread length ensures secure fastening while reducing material stress and weight.
• High Tensile Strength: 110,000 psi tensile strength guarantees dependable load-bearing capacity for critical applications.
• Easy Installation & Removal: External hex drive and 13mm head width allow for straightforward tool engagement and efficient maintenance.
• Precision Thread Fit: Class 6h thread fit and M8x1.25 coarse thread ensure consistent, vibration-resistant connections.
• Broad Industry Compliance: Meets ISO 4014, DIN 931, and SAE J1199 standards, ensuring compatibility and reliability across global projects.

Professional Applications & Engineering Value

This M8 hex head screw is engineered to address common industrial challenges, such as vibration loosening and corrosion-induced failure. The Class 8.8 steel core provides a robust foundation for structural applications, while the zinc plating significantly enhances corrosion resistance in humid or outdoor environments. The partially threaded design minimizes thread damage during installation and optimizes clamping force distribution. With its external hex drive and coarse thread (M8x1.25), it ensures quick assembly and disassembly in machinery, construction, and automotive frameworks, reducing downtime and maintenance costs. Its compliance with international standards like ISO 4014 and DIN 931 makes it a trusted choice for engineers requiring consistent performance and safety.

Specification Summary & Compliance

This fastener features precise Class 6h thread fit and metric coarse threading (M8x1.25) with a minimum thread length of 22mm. It adheres to manufacturing specifications per ISO 4014, DIN 931, and SAE J1199, ensuring dimensional accuracy and mechanical reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in regulated industries without hazardous substances.