S-91290A063 M20 x 40 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength with 170,000 psi capacity for reliable performance in high-stress industrial assemblies
• Superior corrosion resistance thanks to black-oxide coating on alloy steel, extending service life in demanding environments
• Precise thread engagement with Class 5g6g fit and coarse 2.5mm pitch for faster installation and reduced cross-threading risk
• Optimal hardness and durability at Rockwell C37, maintaining structural integrity under heavy loads and vibration
• Standard hex drive compatibility with 17mm socket for secure torque application and easy installation in confined spaces
• Full thread coverage along the 40mm length provides consistent clamping force across the entire engagement area
• Global compliance assurance meeting DIN 912/ISO 4762 standards plus RoHS 3 and REACH environmental regulations

Professional Applications & Engineering Value

This M20 socket head cap screw delivers critical engineering solutions where high-strength fastening is paramount. The black-oxide alloy steel construction provides superior corrosion protection in industrial environments, while the Class 12.9 strength rating ensures reliable performance in heavy machinery, automotive assemblies, and structural applications. The coarse metric thread with 2.5mm pitch enables quick installation and superior resistance to vibration loosening. The standard socket head profile and 17mm hex drive allow for high torque application in space-constrained applications, making these fully threaded fasteners ideal for precision equipment, manufacturing fixtures, and high-stress mechanical systems where failure is not an option.

Specification Summary & Compliance

This socket head cap screw features M20 x 2.5mm coarse threads with Class 5g6g thread fit per metric standards, ensuring precise dimensional accuracy. The fastener is manufactured to DIN 912/ISO 4762 specifications with a 40mm fully threaded length and 30mm head diameter. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming the product meets current industrial safety and sustainability requirements for global supply chains.