S-91029A111 M10 x 25 mm ISO 4017, DIN 933 Extreme-Strength Metric Class12.9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Maximum load-bearing capacity with Class 12.9 strength rating and 170,000 psi tensile strength for critical structural applications
• Superior corrosion resistance through zinc yellow-chromate plating, extending service life in harsh industrial environments
• Optimized torque transmission with external hex drive design and 17mm head width for secure installation and removal
• Enhanced thread engagement with fully threaded M10 coarse pitch (1.5mm) design for faster assembly and reliable holding power
• Precise dimensional consistency with Class 6h thread fit ensuring compatibility with standard metric components
• Exceptional hardness performance at Rockwell C39 for resistance to wear, deformation, and fatigue under heavy loads
• International compliance assurance meeting ISO 4017/DIN 933 specifications for global manufacturing and engineering projects

Professional Applications & Engineering Value

These Class 12.9 hex head screws deliver exceptional engineering value for heavy-duty industrial applications where fastener failure is not an option. The high-strength steel construction combined with Rockwell C39 hardness provides critical resistance to vibration-induced loosening and structural fatigue in machinery, automotive assemblies, and construction equipment. The M10 coarse thread configuration ensures rapid installation while maintaining superior clamping force, significantly reducing assembly time in production environments. The zinc yellow-chromate plating offers robust protection against corrosion in demanding conditions, making these metric hex bolts ideal for outdoor equipment, manufacturing plants, and marine-adjacent applications. With full compliance to ISO 4017/DIN 933 standards, engineers can specify these fasteners with confidence for critical joints requiring predictable performance and long-term reliability.

Specification Summary & Compliance

This fully threaded hex head screw features precise Class 6h thread fit tolerance with M10 x 1.5mm coarse pitch threading and 25mm length. Manufactured to meet ISO 4017/DIN 933 specifications with external hex drive (17mm width) and zinc yellow-chromate plating finish. The fastener achieves Class 12.9 strength rating with 170,000 psi tensile strength and Rockwell C39 hardness, compliant with international industrial standards for heavy-duty applications.