S-91290A168 M4 x 20 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, ensuring reliable performance in high-stress applications.
• Superior corrosion resistance thanks to the black-oxide finish on alloy steel, extending service life in harsh industrial environments.
• Precise and secure fastening with a 3mm hex drive and standard socket head profile, allowing for easy installation and high torque transmission.
• Consistent thread engagement due to Class 5g6g thread fit and M4x0.7mm coarse thread, providing vibration resistance and reduced loosening.
• Full compliance with international standards including DIN 912 and ISO 4762, ensuring interchangeability and quality assurance.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements.
• Versatile fully threaded design for uniform load distribution and flexibility in various assembly setups.

Professional Applications & Engineering Value

This M4 socket head cap screw is engineered to address critical challenges in industrial and mechanical assemblies where high strength and reliability are paramount. The black-oxide alloy steel construction offers enhanced resistance to wear and corrosion, making it ideal for automotive, machinery, and heavy equipment applications. Its Class 12.9 strength rating and Rockwell C37 hardness ensure it can withstand extreme loads and vibrations without failure. The hex drive design with a 3mm key size allows for efficient installation in confined spaces, while the coarse thread (M4x0.7mm) provides quick assembly and superior holding power. Fully compliant with DIN 912/ISO 4762 standards, this screw delivers consistent performance, reducing downtime and maintenance costs in demanding environments.

Specification Summary & Compliance

This product features precise Class 5g6g thread fit per metric standards, ensuring accurate engagement and dimensional consistency. It adheres to DIN 912 and ISO 4762 specifications for socket head cap screws, covering dimensions, mechanical properties, and performance criteria. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms its environmental safety and suitability for global markets. The screw is fully threaded with a right-hand thread direction and coarse pitch, optimized for robust industrial use.