S-97478A117 M16 x 55 mm DIN 6914, ISO 7412 Metric High-Strength Steel Heavy Hex Head Screws for Structural Applications

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with hot-dipped galvanized steel coating, ensuring long-term reliability in harsh industrial environments
• Superior load-bearing capacity from Class 10.9 strength grade and 150,000 psi tensile strength, preventing failures under high stress
• Optimized thread engagement with M16 coarse thread (2mm pitch) and Class 6g fit, enabling faster assembly and vibration resistance
• Enhanced torque transmission through the external hex drive and 27mm head width, allowing secure tightening with standard tools
• Controlled clamping force due to partial threading and 29mm grip length, minimizing material distortion in structural joints
• Consistent performance backed by Rockwell C32 hardness, maintaining mechanical properties through repeated use
• Global compliance assurance meeting DIN 6914/ISO 7412 specifications, RoHS 3, and REACH for cross-border project suitability

Professional Applications & Engineering Value

This M16 hex head screw delivers critical solutions for heavy-duty industrial applications where structural integrity and environmental resistance are paramount. The hot-dipped galvanized steel construction provides a robust barrier against corrosion in outdoor infrastructure, machinery frames, and construction assemblies. With partial threading and 55mm length, it ensures precise load distribution in steel-to-steel connections while preventing thread stripping. The metric coarse thread (2mm pitch) enables rapid installation in high-volume production environments, reducing assembly time without compromising the 150,000 psi tensile strength. Engineers specify this fastener for bridgework, industrial equipment, and structural steel frameworks where Class 10.9 strength and standardized external hex drive compatibility are essential for maintenance and safety protocols.

Specification Summary & Compliance

Manufactured to DIN 6914/ISO 7412 standards with Class 6g thread fit tolerance for consistent mating. The metric coarse thread (M16 x 2mm) ensures dimensional accuracy across batches. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety in industrial supply chains. The 29mm grip length and 26mm thread length provide engineered engagement depth for optimized clamping performance.