S-91180A870 M16 x 40 mm ISO 8676, DIN 961 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 industrial environments
• Precise thread engagement with Class 6h fit and fine 1.5mm pitch ensuring secure, vibration-resistant connections
• Optimized installation efficiency featuring external hex drive and standard 24mm head for easy tool access and torque application
• Full-thread design advantage providing consistent clamping force along the entire 40mm length
• Material durability assurance with Rockwell C21 hardness maintaining structural integrity under stress
• Global compliance readiness meeting ISO 8676 DIN 961 standards for international project compatibility

Professional Applications & Engineering Value

This M16 hex head screw delivers exceptional engineering value through its Class 8.8 steel construction and fine 1.5mm pitch threading, specifically designed to address common industrial fastening challenges. The combination of 110,000 psi tensile strength and Rockwell C21 hardness provides reliable performance in heavy machinery, structural assemblies, and equipment manufacturing where vibration resistance and long-term reliability are critical. The zinc plated finish offers essential corrosion protection for applications in manufacturing facilities, outdoor installations, and environments with moderate chemical exposure. The fully threaded metric design with Class 6h thread fit ensures precise engagement in pre-tapped holes or with matching nuts, minimizing the risk of cross-threading while maintaining consistent clamping force across the entire 40mm length. This makes it particularly valuable for assembly lines requiring repeatable, high-quality connections in automotive, construction, and industrial equipment sectors.

Specification Summary & Compliance

Manufactured to precise metric dimensions with Class 6h thread fit tolerance ensuring compatibility with standard metric components. The fastener meets ISO 8676 DIN 961 specifications for dimensional accuracy and performance requirements. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental safety standards. The Class 8.8 strength rating corresponds to medium carbon steel quenched and tempered for optimal strength-to-weight ratio, suitable for general engineering applications requiring reliable mechanical properties.