S-91290A228 M5 x 12 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Maximum load-bearing capacity with Class 12.9 strength rating and 170,000 psi tensile strength for reliable performance in high-stress environments
• Superior corrosion resistance through black-oxide surface treatment, extending service life in demanding industrial conditions
• Precision thread engagement with Class 5g6g tolerance fit ensuring secure fastening and vibration resistance
• Optimized torque transmission via 4mm hex drive socket design, preventing tool slippage and damage during installation
• Enhanced durability with Rockwell C37 hardness, maintaining structural integrity under repeated loading cycles
• Broad compatibility with M5 coarse threading (0.8mm pitch) for quick installation across standard metric applications
• Full regulatory compliance meeting RoHS 3 and REACH environmental standards for global industrial use

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these Class 12.9 socket head cap screws deliver exceptional performance in machinery assembly, automotive components, and heavy equipment manufacturing. The black-oxide alloy steel construction provides superior corrosion protection while maintaining the 170,000 psi tensile strength required for critical structural connections. The M5 coarse threading with Class 5g6g precision fit ensures reliable engagement in both soft and hard materials, reducing the risk of cross-threading during high-volume production. The fully threaded design and standard socket head profile allow for consistent clamping force distribution and easy access in confined spaces, making them ideal for precision engineering applications where reliability and repeatability are paramount.

Specification Summary & Compliance

Manufactured to DIN 912/ISO 4762 standards with Class 5g6g thread fit tolerance for precision metric fastening. The M5 x 0.8mm coarse thread configuration ensures optimal performance in standard industrial applications. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming suitability for global manufacturing requirements. The 12mm length with 8.5mm head diameter and 4mm hex drive provides standardized dimensions for consistent integration across industrial equipment and machinery assemblies.