S-91029A119 M12 x 40 mm ISO 4017, DIN 933 Extreme-Strength Metric Class12.9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 170,000 PSI tensile strength for reliable performance in high-stress applications
• Superior corrosion resistance through zinc yellow-chromate plating, extending service life in harsh environments
• Maximum thread engagement with fully threaded design ensuring consistent clamping force along the entire 40mm length
• Precise thread compatibility with Class 6h fit providing secure mating with standard metric nuts and components
• Optimized for heavy torque applications featuring external hex drive and 19mm head width for secure tool engagement
• Enhanced durability from Rockwell C39 hardness maintaining thread integrity through repeated installations
• International compliance assurance meeting ISO 4017/DIN 933 specifications for global project compatibility

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these M12 hex head screws deliver exceptional performance where failure is not an option. The Class 12.9 steel construction provides the highest grade of metric fastener strength, making them ideal for heavy machinery, structural steel connections, and high-vibration equipment. The coarse thread pitch of 1.75mm ensures rapid installation while maintaining holding power, particularly beneficial in assembly line environments. Zinc yellow-chromate plating offers superior protection against corrosion in outdoor or chemically aggressive settings, significantly reducing maintenance frequency and replacement costs. The fully threaded design allows for maximum adjustability and consistent clamping force distribution across the entire 40mm length, solving common issues of joint relaxation in dynamic load conditions.

Specification Summary & Compliance

This metric hex head screw features M12 x 1.75mm coarse threading with Class 6h thread fit tolerance ensuring precise mating with standard components. Manufactured to ISO 4017/DIN 933 specifications with complete traceability and quality assurance. The fastener meets Class 12.9 strength requirements with verified tensile strength of 170,000 PSI and Rockwell C39 hardness. Compliant with international standards for dimensional accuracy and mechanical properties, suitable for global engineering projects requiring certified components.