S-91290A383 M3.5 x 12 mm ASTM A574M, 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 environments, reducing the risk of fastener failure.
• Superior corrosion resistance provided by the black-oxide finish on alloy steel, extending service life in demanding industrial conditions.
• Precise hex socket drive (2.5 mm) allows for secure tool engagement and high torque application, minimizing stripping and improving assembly efficiency.
• Class 12.9 strength rating guarantees high fatigue resistance and durability, ideal for critical applications requiring long-term reliability.
• Fully threaded M3.5 design with coarse 0.6 mm pitch ensures quick installation and strong holding power in various materials.
• Compliance with DIN 912, ISO 4762, and ASTM A574M standards assures consistent quality, dimensional accuracy, and interchangeability in global markets.
• RoHS 3 compliance makes these screws suitable for use in environmentally sensitive and regulated industries.

Professional Applications & Engineering Value

These M3.5 socket head cap screws are engineered from black-oxide alloy steel to address critical challenges in high-stress mechanical assemblies. The Class 12.9 strength class and Rockwell C37 hardness provide exceptional resistance to vibration and dynamic loads, preventing loosening in machinery, automotive, and aerospace components. The fully threaded metric design with a coarse thread pitch ensures rapid installation and robust clamping force, while the hex socket drive enables precise torque control in confined spaces. Ideal for applications demanding high tensile strength and durability, these screws reduce maintenance needs and enhance the longevity of industrial equipment.

Specification Summary & Compliance

This screw features an M3.5 x 0.6 mm thread with a Class 6g thread fit for precise dimensional accuracy, and it is fully threaded for consistent engagement. Manufactured in compliance with DIN 912, ISO 4762, and ASTM A574M specifications, ensuring adherence to international standards for socket head cap screws. The product is RoHS 3 (2015/863/EU) compliant, meeting environmental regulations for hazardous substance restrictions.