S-91290A108 M2.5 x 20 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life in harsh industrial environments.
• Precise hex socket drive (2mm) allows for high torque application and secure installation, minimizing stripping and improving assembly efficiency.
• Class 12.9 strength rating guarantees high durability and fatigue resistance, ideal for demanding mechanical and structural uses.
• Fully threaded design provides consistent clamping force along the entire 20mm length, enhancing joint stability.
• Rockwell C37 hardness offers excellent wear resistance, maintaining thread integrity through repeated use and vibrations.
• Compliance with DIN 912/ISO 4762 ensures dimensional accuracy and interchangeability, facilitating global sourcing and replacement.

Professional Applications & Engineering Value

This M2.5 socket head cap screw is engineered to address critical challenges in precision machinery, automotive assemblies, and heavy-duty equipment. The black-oxide alloy steel construction combats rust and oxidation, which is vital in environments exposed to moisture or chemicals. With a coarse thread (0.45mm pitch) and Class 5g6g thread fit, it ensures quick assembly and robust holding power, reducing installation time and maintenance needs. The hex drive style and standard socket head profile allow for compact spaces and high-torque fastening, making it a reliable choice for applications requiring high tensile strength and long-term reliability without frequent replacements.

Specification Summary & Compliance

This fastener features a metric thread size M2.5 with a coarse pitch of 0.45mm and Class 5g6g thread fit for precise dimensional tolerances as per DIN 912 and ISO 4762 standards. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met. The specifications include a right-hand thread direction, fully threaded rod type, and adherence to international manufacturing norms for consistent quality and performance in industrial settings.