S-91502A203 M8 x 55 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior corrosion resistance from blue-dyed zinc plating protects against environmental damage, extending service life in harsh conditions.
• High hardness rating (Rockwell C37) provides excellent wear resistance, maintaining structural integrity under repetitive loads.
• Precision thread fit (Class 5g6g) ensures smooth installation and secure fastening in coarse-threaded metric assemblies.
• Partially threaded design offers optimal grip and clamping force where full threading isn't required, enhancing assembly versatility.
• Standard hex drive compatibility with 6mm tools allows for easy installation and removal in confined spaces.
• Compliance with international standards (DIN 912/ISO 4762) guarantees consistent quality and interchangeability in global engineering projects.

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these Class 12.9 socket head cap screws deliver unmatched reliability in heavy machinery, automotive assemblies, and precision equipment. The alloy steel construction with blue-dyed zinc plating combats corrosion while maintaining 170,000 psi tensile strength, preventing joint failure under extreme vibration and load. The M8 x 1.25mm coarse pitch thread facilitates quick assembly in thick materials, while the partially threaded shank concentrates stress away from shear planes. Ideal for applications requiring high clamp load retention and metric coarse thread compatibility, these fasteners solve common issues like stripping, galling, and environmental degradation in industrial fastening systems.

Specification Summary & Compliance

This M8 socket head cap screw features precise Class 5g6g thread fit per ISO metric standards, with a minimum thread length of 28mm and total length of 55mm. Manufacturing adheres to DIN 912/ISO 4762 specifications for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance in international markets.