S-91290A881 M30 x 70 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional durability with Class 12.9 strength rating and 170,000 psi tensile strength for reliable performance in high-stress applications
• Superior corrosion resistance through black-oxide coating on alloy steel, extending service life in demanding environments
• Precise thread engagement with Class 5g6g thread fit and coarse 3.5mm pitch for quick assembly and secure fastening
• Optimal drive efficiency featuring 22mm hex socket drive for high torque application without cam-out issues
• Full thread coverage along the 70mm length provides maximum grip and load distribution across connected components
• Hardened performance to Rockwell C37 ensures maintained mechanical properties under repeated loading
• Global compliance with DIN 912/ISO 4762 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

These M30 socket head cap screws deliver critical performance advantages for heavy-duty industrial applications where failure is not an option. The black-oxide alloy steel construction provides superior protection against corrosion while maintaining the Class 12.9 strength rating essential for high-stress assemblies. The coarse 3.5mm thread pitch ensures rapid installation and reliable engagement in structural components, machinery frames, and equipment requiring high tensile strength of 170,000 psi. The 22mm hex drive accommodates significant torque values without stripping, while the fully threaded design maximizes clamping force distribution. These metric socket screws solve critical engineering challenges in manufacturing, construction, and heavy equipment where vibration resistance, environmental durability, and predictable performance are paramount.

Specification Summary & Compliance

This socket head cap screw features M30x3.5mm coarse threads with Class 5g6g thread fit tolerance per ISO standards. Manufactured to DIN 912/ISO 4762 specifications with 70mm fully threaded length, 45mm head diameter, and 30mm head height. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. The Class 12.9 designation confirms premium mechanical properties suitable for the most demanding fastener applications.