S-91290A061 M20 x 30 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional durability with Class 12.9 rating and 170,000 PSI tensile strength for reliable performance in high-stress applications
• Superior corrosion resistance from black-oxide coating, extending service life in demanding industrial environments
• Precise torque application enabled by 17mm hex drive and standard socket head profile for secure fastening
• Optimized thread engagement with M20 coarse thread (2.5mm pitch) and Class 5g6g fit for quick assembly and vibration resistance
• Maximum material hardness at Rockwell C37 ensures minimal wear and consistent performance under repeated use
• Full thread coverage along the 30mm length provides uniform load distribution and versatile mounting options
• Global compliance assurance meeting DIN 912/ISO 4762 standards plus RoHS 3 and REACH environmental regulations

Professional Applications & Engineering Value

These M20 socket head cap screws deliver critical engineering solutions where high tensile strength and reliable fastening are paramount. The black-oxide alloy steel construction provides superior protection against rust and chemical exposure in manufacturing equipment, automotive assemblies, and heavy machinery. The coarse metric thread (2.5mm pitch) ensures rapid installation and maintains integrity in high-vibration environments, while the Class 12.9 strength rating guarantees performance under extreme mechanical loads. With fully threaded design and precise Class 5g6g thread fit, these screws distribute stress evenly across the entire fastener length, preventing premature failure in critical joints and structural applications.

Specification Summary & Compliance

This socket head cap screw features M20 x 2.5mm coarse thread with Class 5g6g thread fit tolerance according to ISO metric standards. Manufacturing complies with DIN 912/ISO 4762 specifications for dimensional accuracy and mechanical properties. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting current environmental regulations for industrial components. The 30mm length and 30mm head diameter maintain standard proportions for consistent performance across applications requiring high-strength metric fasteners.