S-91290A186 M4 x 50 mm 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 construction, providing reliable performance under high-stress conditions.
• Superior corrosion resistance thanks to the black-oxide coating, extending service life in demanding industrial environments.
• Precise and secure fastening with a 3 mm hex drive and standard socket head, ensuring easy installation and reduced stripping risk.
• Optimized thread engagement through the M4 x 0.7 mm coarse thread and Class 5g6g fit, offering consistent clamping force and vibration resistance.
• Versatile partial threading (20 mm min thread length on a 50 mm screw) allows for flexibility in applications requiring unthreaded shank sections.
• High tensile strength of 170,000 PSI and Rockwell C37 hardness, making it suitable for heavy-duty mechanical assemblies.
• Compliance with international standards including DIN 912/ISO 4762, RoHS 3, and REACH, ensuring quality and environmental safety.

Professional Applications & Engineering Value

This M4 socket head cap screw is engineered to address critical challenges in industrial and mechanical systems, where high tensile strength and reliable fastening are paramount. Made from Class 12.9 alloy steel with a black-oxide surface treatment, it resists corrosion and wear, ideal for machinery, automotive, and precision equipment. The metric coarse thread (M4 x 0.7 mm) and partial threading design enhance load distribution and reduce the risk of loosening under vibration. With a 3 mm hex drive, it allows for efficient installation in confined spaces, minimizing downtime. These screws are perfect for applications demanding durability and compliance with DIN 912/ISO 4762 standards, providing long-term performance in harsh environments.

Specification Summary & Compliance

This product features precise Class 5g6g thread fit per metric standards, ensuring dimensional accuracy and interchangeability. It conforms to DIN 912 (identical to ISO 4762) for socket head cap screws, with a right-hand coarse thread and partially threaded rod design. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets environmental and safety requirements for industrial use, guaranteeing no hazardous substances and adherence to global manufacturing norms.