S-90605A302 M10 x 20 mm DIN 912, ISO 4762 Left-Hand Threaded Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength (170,000 psi) ensures reliable performance under extreme loads, minimizing failure risks in demanding applications.
• Superior hardness (Rockwell C37) provides excellent wear resistance and maintains thread integrity through repeated use and high-stress conditions.
• Black-oxide finish on alloy steel offers enhanced corrosion resistance, extending service life in harsh industrial environments.
• Left-hand thread design prevents loosening in counter-rotating machinery, providing secure fastening where standard right-hand threads may fail.
• Precision Class 5g6g thread fit ensures smooth installation and consistent clamping force, reducing assembly time and improving joint reliability.
• 8mm hex drive socket head allows for high-torque application with standard tools, facilitating easy installation and removal in confined spaces.
• Full compliance with DIN 912/ISO 4762 guarantees dimensional accuracy and interchangeability, ensuring seamless integration into existing metric assemblies.

Professional Applications & Engineering Value

This M10 left-hand socket head cap screw is engineered to address critical challenges in high-vibration and reverse-rotation environments. The Class 12.9 alloy steel construction delivers unmatched strength-to-weight ratio, making it ideal for heavy machinery, automotive systems, and precision equipment where coarse thread pitch (1.5mm) ensures rapid assembly without cross-threading. The black-oxide surface treatment provides a durable barrier against oxidation and chemical exposure, while the fully threaded design offers uniform stress distribution across the entire 20mm length. These screws are particularly valuable in applications requiring left-hand thread security, such as rotating shafts, press fittings, and safety-critical assemblies where unintended loosening could lead to operational failures.

Specification Summary & Compliance

This socket head cap screw features M10x1.5mm coarse threads with Class 5g6g thread fit per ISO metric standards, ensuring precise dimensional tolerances. Manufacturing strictly adheres to DIN 912/ISO 4762 specifications for socket head profile and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material traceability for global industrial supply chains.