S-91290A573 M3 x 55 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 for reliable performance in demanding applications.
• Superior corrosion resistance provided by the black-oxide finish on alloy steel, extending service life in harsh industrial environments.
• Precise and secure installation enabled by the internal hex drive (2.5mm) and standard socket head profile, minimizing stripping and ensuring consistent torque application.
• Optimized for high-stress assemblies thanks to the partially threaded M3 x 0.5mm coarse thread design, offering excellent clamp load and vibration resistance.
• Guaranteed dimensional accuracy and interchangeability with compliance to DIN 912 / ISO 4762 standards and Class 5g6g thread fit.
• Enhanced wear resistance from a Rockwell C37 hardness, maintaining thread integrity and fastener performance under repeated use.
• Safe for regulated industries as it is RoHS 3 and REACH compliant, meeting strict environmental and health safety standards.

Professional Applications & Engineering Value

This M3 socket head cap screw is engineered for heavy-duty applications where failure is not an option. The black-oxide alloy steel construction combats corrosion, making it ideal for machinery, automotive, and equipment subjected to oils, moisture, and varying temperatures. Its Class 12.9 strength and 170,000 psi tensile strength ensure it can handle high dynamic loads and stresses without elongating or breaking. The partially threaded design with a coarse 0.5mm pitch provides a strong grip in metals and engineered plastics, reducing the risk of loosening from vibrations. The hex drive allows for compact, flush installations in confined spaces, offering a reliable solution for precision assemblies that demand both high clamp force and long-term durability under strenuous conditions.

Specification Summary & Compliance

This screw features an M3 x 0.5mm thread with a Class 5g6g thread fit ensuring precise dimensional tolerances. It is manufactured in accordance with DIN 912 / ISO 4762 standards, guaranteeing consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety requirements for industrial use worldwide.