S-91290A890 M30 x 160 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity 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 surface treatment, extending service life in demanding industrial environments
• Precise torque transmission enabled by 22mm hex socket drive design, preventing tool slippage and ensuring secure fastening
• Optimized thread engagement with M30x3.5 coarse thread configuration and Class 5g6g thread fit for quick assembly and vibration resistance
• Enhanced durability from Rockwell C37 hardness, maintaining structural integrity under repeated loading cycles
• Versatile partial threading (72mm threaded length) allowing for both clamping and alignment functions in complex assemblies
• Global compliance assurance meeting DIN 912/ISO 4762 standards plus RoHS 3 and REACH environmental regulations

Professional Applications & Engineering Value

This high-strength socket head cap screw delivers critical engineering solutions for heavy machinery, automotive systems, and industrial equipment where reliability under extreme conditions is paramount. The black-oxide alloy steel construction provides superior protection against corrosion while maintaining the exceptional mechanical properties required for high-vibration environments. The M30 coarse thread with 3.5mm pitch ensures rapid installation and secure fastening in thick materials, while the partially threaded design offers flexibility for applications requiring both clamping force and smooth shank guidance. The 22mm hex drive socket enables high-torque application without stripping, making it ideal for maintenance-critical applications where disassembly and reassembly are frequent.

Specification Summary & Compliance

This metric socket head cap screw features precise Class 5g6g thread fit tolerance according to ISO standards, ensuring consistent performance across industrial applications. Manufacturing strictly 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) environmental regulations, containing no substances of very high concern. With 45mm head diameter and 30mm head height, the fastener provides optimal bearing surface for distributed load transfer in critical connections.