S-91290A384 M3.5 x 20 mm ASTM A574M, DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional strength and durability with Class 12.9 alloy steel, providing 170,000 psi tensile strength for reliable performance in demanding applications.
• Superior corrosion resistance from the black-oxide coating, extending service life in harsh industrial environments.
• Precise torque application enabled by the 2.5 mm hex drive and standard socket head profile, reducing tool slippage and assembly errors.
• Consistent thread engagement with M3.5 coarse threads (0.6 mm pitch) and Class 6g fit, ensuring easy installation and secure fastening.
• High hardness rating of Rockwell C37, minimizing wear and deformation under heavy loads for long-term reliability.
• Full threading along the 20 mm length allows for adjustable grip and uniform stress distribution in various material thicknesses.
• Compliance with international standards including DIN 912, ISO 4762, and ASTM A574M, guaranteeing interchangeability and quality assurance.

Professional Applications & Engineering Value

This M3.5 socket head cap screw is engineered to address critical challenges in heavy-duty industrial settings, such as vibration resistance and structural integrity. The Class 12.9 alloy steel construction, combined with a black-oxide coating, provides excellent protection against rust and wear, making it ideal for machinery, automotive assemblies, and precision equipment. The metric coarse threads and fully threaded design facilitate quick installation and robust clamping force, reducing the risk of loosening in high-stress environments. By meeting DIN 912 and ISO 4762 specifications, it ensures compatibility and reliability, supporting efficient maintenance and reducing downtime in engineering applications.

Specification Summary & Compliance

This product features precise metric threading with a size of M3.5, pitch of 0.6 mm, and Class 6g thread fit for consistent performance. It adheres to manufacturing standards including DIN 912, ISO 4762, and ASTM A574M, ensuring dimensional accuracy and strength. Additionally, it is RoHS 3 (2015/863/EU) Compliant, supporting environmental and safety regulations in global supply chains.