S-91502A129 M4 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 and heavy-duty applications, reducing the risk of fastener failure.
• Superior corrosion resistance provided by the blue-dyed zinc-plated alloy steel, extending service life in harsh or outdoor industrial environments.
• Precision Class 12.9 strength rating and Rockwell C37 hardness guarantee consistent durability and resistance to wear under demanding conditions.
• Standard hex drive (3mm) allows for easy installation and removal with common tools, improving assembly efficiency and maintenance.
• Fully threaded M4 coarse pitch (0.7mm) design enables quick, secure fastening and strong holding power in a variety of materials.
• Compliance with DIN 912 / ISO 4762 standards ensures dimensional accuracy, interchangeability, and reliability for global engineering projects.
• RoHS 3 and REACH compliant construction supports environmental safety and regulatory requirements in industrial supply chains.

Professional Applications & Engineering Value

This M4 socket head cap screw is engineered to address critical challenges in high-stress mechanical assemblies, such as machinery, automotive components, and precision equipment. The Class 12.9 alloy steel construction, combined with a blue-dyed zinc-plated finish, offers outstanding resistance to corrosion and mechanical fatigue, reducing maintenance needs and downtime. The coarse metric thread (M4x0.7mm) and fully threaded rod design provide rapid installation and robust clamping force, ideal for applications where vibration resistance and reliability are paramount. With a 3mm hex drive and compliance with DIN 912 / ISO 4762, these screws ensure precise fit and long-term performance in demanding industrial settings.

Specification Summary & Compliance

This screw features a metric M4 x 0.7mm coarse thread with a Class 5g6g thread fit for consistent dimensional accuracy. It is manufactured to meet DIN 912 and ISO 4762 specifications, ensuring reliable performance in socket head cap screw applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and sustainable use in industrial and engineering projects worldwide.