S-91290A070 M20 x 110 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional strength and durability with Class 12.9 rating and 170,000 PSI tensile strength, ensuring reliable performance in high-stress applications.
• Superior corrosion resistance thanks to the black-oxide coating, extending service life in harsh industrial environments.
• Precise and secure fastening with M20 coarse thread (2.5mm pitch) and Class 5g6g thread fit, reducing the risk of cross-threading and ensuring consistent engagement.
• Easy installation and high torque capability via the 17mm hex drive and standard socket head, allowing for efficient assembly with common tools.
• Optimized weight and material efficiency with a partially threaded design, providing strong clamping where needed without unnecessary bulk.
• High hardness (Rockwell C37) for improved wear resistance, maintaining thread integrity and dimensional stability under repeated use.
• Compliance with international standards including DIN 912/ISO 4762, RoHS 3, and REACH, ensuring safety, quality, and environmental responsibility.

Professional Applications & Engineering Value

This M20 socket head cap screw is engineered to address critical challenges in heavy-duty industrial settings, such as machinery assembly, automotive systems, and construction equipment. The black-oxide alloy steel construction offers enhanced corrosion protection, reducing maintenance needs in humid or chemically aggressive environments. With a Class 12.9 strength rating and 170,000 PSI tensile strength, it provides reliable clamping force to prevent joint failure under dynamic loads. The coarse metric thread (2.5mm pitch) ensures quick installation and resistance to vibration loosening, while the 17mm hex drive allows for high-torque application without stripping. Ideal for applications demanding precision and longevity, this screw minimizes downtime and enhances operational safety in engineering projects.

Specification Summary & Compliance

This product adheres to precise dimensional tolerances, including Class 5g6g thread fit per metric standards, ensuring compatibility and ease of assembly. It meets DIN 912 and ISO 4762 specifications for socket head cap screws, guaranteeing consistent quality and performance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms its environmental safety and suitability for global markets. The partially threaded design and right-hand thread direction further support efficient use in various industrial fastening scenarios.