S-91290A222 M5 x 8 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 PSI for reliable performance in high-stress applications
• Superior corrosion resistance from black-oxide coating, extending service life in harsh environments
• Precise hex socket drive with 4mm hex key for secure, slip-free installation and high torque transmission
• Class 12.9 strength rating and Rockwell C37 hardness for maximum durability and fatigue resistance
• Metric coarse threading (M5 x 0.8mm) ensuring quick assembly and strong holding power
• Full thread coverage along the 8mm length for consistent clamping force distribution
• International standard compliance with DIN 912/ISO 4762 for guaranteed interchangeability and quality

Professional Applications & Engineering Value

These Class 12.9 socket head cap screws deliver critical engineering solutions where standard fasteners fail. The black-oxide alloy steel construction provides superior protection against rust and chemical exposure, making them ideal for automotive assemblies, heavy machinery, and outdoor equipment. The M5 coarse thread design ensures rapid installation while maintaining vibration resistance, while the hex socket drive allows for high-torque tightening in confined spaces. With fully threaded construction and Class 5g6g thread fit, these screws maintain consistent clamping force across the entire engagement length, preventing joint failure in dynamic loading conditions common in industrial manufacturing and precision equipment.

Specification Summary & Compliance

Manufactured to exact DIN 912/ISO 4762 specifications with Class 5g6g thread tolerance for precision fit. Features M5 x 0.8mm coarse thread with 8mm length and 4mm hex drive. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets.