S-90128A205 M3 x 25 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, ideal for high-stress industrial applications.
• Superior corrosion resistance thanks to zinc-plating on alloy steel, extending service life in harsh environments.
• Precise and reliable fastening with M3 x 0.5 mm coarse threads and Class 5g6g thread fit, ensuring consistent engagement and reduced risk of cross-threading.
• Easy installation and high torque capability via 2.5 mm hex drive socket head, allowing secure tightening in confined spaces.
• Optimized for heavy-duty use with Rockwell C37 hardness, providing excellent wear resistance and minimal deformation under load.
• Versatile partial threading (18 mm thread length on 25 mm screw) offers flexibility for applications requiring both threaded and unthreaded sections.
• Compliance with international standards including DIN 912/ISO 4762, RoHS 3, and REACH, ensuring quality and environmental safety for global supply chains.

Professional Applications & Engineering Value

This Class 12.9 socket head cap screw is engineered to address critical challenges in demanding industrial settings, such as machinery assembly, automotive components, and precision equipment. The zinc-plated alloy steel construction combats corrosion, reducing maintenance needs in humid or chemically exposed environments. With a high tensile strength of 170,000 psi and Rockwell C37 hardness, it withstands extreme vibrations and loads without failing, making it ideal for heavy-duty applications. The M3 x 0.5 mm coarse thread and Class 5g6g thread fit ensure quick, secure fastening, minimizing assembly time while preventing loosening. Its partially threaded design allows for precise clamping in structures where unthreaded shank sections are necessary, enhancing stability in dynamic systems. By meeting DIN 912/ISO 4762 standards, this screw delivers consistent performance, supporting efficient production and long-term reliability in engineering projects.

Specification Summary & Compliance

This screw features precise Class 5g6g thread fit per metric standards, ensuring dimensional accuracy for reliable fastening. It complies with DIN 912 and ISO 4762 specifications for socket head cap screws, guaranteeing interchangeability and quality. Additionally, it is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, adhering to environmental and safety regulations for hazardous substances.