S-91290A211 M8 x 45 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional strength-to-weight ratio with Class 12.9 rating and 170,000 PSI tensile strength for reliable performance in demanding applications
• Superior corrosion resistance provided by black-oxide coating, extending service life in harsh industrial environments
• Precise torque transmission through 6mm hex drive socket head design, preventing stripping and ensuring secure fastening
• Optimal thread engagement with Class 5g6g thread fit and coarse 1.25mm pitch for quick assembly and vibration resistance
• Maximum load distribution achieved through fully threaded M8 design and 13mm head diameter for enhanced clamping force
• Rockwell C37 hardness maintains dimensional stability under extreme pressure and repeated use
• Global compatibility with DIN 912/ISO 4762 standards ensures interchangeability and quality consistency across international projects

Professional Applications & Engineering Value

This M8 socket head cap screw delivers exceptional engineering value for heavy-duty industrial applications where reliability is paramount. The black-oxide alloy steel construction combined with Class 12.9 strength rating provides superior resistance to shock loads and vibration fatigue, making it ideal for machinery, automotive assemblies, and precision equipment. The fully threaded metric design with coarse 1.25mm pitch ensures rapid installation and maintains clamping force in high-vibration environments. The socket head configuration with 6mm hex drive allows for compact installation in confined spaces while providing excellent torque transmission. These industrial fasteners solve critical challenges in manufacturing and construction by offering predictable performance, reduced maintenance cycles, and enhanced safety margins in structural applications.

Specification Summary & Compliance

This precision fastener maintains Class 5g6g thread fit tolerance according to ISO metric standards, ensuring consistent engagement and reliable performance. Manufactured to DIN 912/ISO 4762 specifications with complete dimensional compliance. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting the latest environmental and safety regulations for industrial components. The black-oxide surface treatment provides additional corrosion protection while maintaining the screw's mechanical properties and dimensional accuracy.