S-91180A913 M16 x 25 mm ISO 8676, DIN 961 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 110,000 psi ensures reliable performance in high-stress applications, preventing fastener failure
• Superior corrosion resistance from zinc plating protects against rust and extends service life in harsh industrial environments
• Precise Class 6h thread fit with fine 1.5mm pitch provides secure, vibration-resistant connections and reduced loosening risks
• Class 8.8 strength rating combined with Rockwell C21 hardness delivers consistent durability for heavy-duty mechanical assemblies
• Full threading design offers maximum grip length and uniform load distribution across the entire fastener
• Standard-compliant manufacturing ensures interchangeability and compatibility with existing metric fastener systems
• External hex drive design enables easy installation and removal with common tools while resisting stripping

Professional Applications & Engineering Value

These M16 hex head screws with Class 8.8 strength rating provide engineering solutions for demanding industrial applications where vibration resistance and structural integrity are critical. The fine 1.5mm pitch metric threads create more thread engagement points per unit length compared to coarse threads, significantly enhancing joint stability in machinery, structural steel connections, and heavy equipment assemblies. The zinc plated finish acts as a sacrificial layer, protecting the steel core from corrosive elements in manufacturing facilities, outdoor installations, and high-humidity environments. With fully threaded design and external hex drive, these fasteners deliver maximum clamping force distribution and straightforward installation using standard wrenches, reducing assembly time while maintaining consistent performance across repetitive disassembly and reassembly cycles.

Specification Summary & Compliance

Manufactured to precise Class 6h thread fit tolerances with M16 x 1.5mm fine thread specifications. These hex head screws comply with ISO 8676 (DIN 961) manufacturing standards, ensuring dimensional accuracy and mechanical properties. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming restriction of hazardous substances. The 25mm length with right hand thread direction and external hex drive provides standardized installation compatibility across industrial applications.