S-91290A185 M4 x 100 mm DIN 912 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capability with a tensile strength of 170,000 psi, ensuring reliable performance in high-stress applications.
• Superior corrosion resistance and reduced light reflection thanks to the black-oxide coating on alloy steel, extending service life in harsh environments.
• High precision fit and consistent engagement with Class 5g6g thread fit and coarse 0.7 mm pitch, facilitating quick assembly and reducing cross-threading risks.
• Optimal torque transmission and strip resistance via the standard 3 mm hex drive and socket head design, allowing for secure tightening in confined spaces.
• Enhanced durability and fatigue resistance from Rockwell C37 hardness and Class 12.9 strength rating, minimizing failure under dynamic loads.
• Versatile partial threading along 20 mm of the 100 mm length, providing flexibility for both clamping and alignment functions.
• Compliance with international standards including DIN 912, RoHS 3, and REACH, ensuring safety, quality, and environmental responsibility.

Professional Applications & Engineering Value

This M4 socket head cap screw is engineered to address critical challenges in heavy-duty industrial settings, where vibration, high tensile loads, and corrosive conditions are common. The black-oxide alloy steel construction offers a robust barrier against rust and wear, while the Class 12.9 strength class and coarse thread design ensure reliable fastening in machinery, automotive assemblies, and precision equipment. The partially threaded rod allows for precise clamping without compromising structural integrity, making it ideal for applications requiring adjustable tension and alignment. With a 3 mm hex drive and DIN 912 compliance, it supports efficient installation and long-term reliability, reducing maintenance downtime and enhancing operational safety in demanding environments.

Specification Summary & Compliance

This product adheres to precise dimensional tolerances, including a Class 5g6g thread fit and ISO-compliant metric coarse thread with 0.7 mm pitch. It meets the DIN 912 manufacturing standard for socket head cap screws, ensuring consistent quality and performance. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial applications without hazardous substances.