S-91290A125 M3 x 25 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 applications, reducing the risk of fastener failure.
• Superior corrosion resistance from the black-oxide coating on alloy steel, extending service life in demanding industrial environments.
• High hardness (Rockwell C37) provides excellent wear resistance, maintaining thread integrity and drive engagement over repeated use.
• Precise hex drive (2.5 mm) allows for secure tool engagement and easy installation in confined spaces, minimizing assembly time.
• Class 12.9 strength rating guarantees consistent performance for critical applications requiring maximum durability and load-bearing capacity.
• Partially threaded design offers optimal grip and clamping force, ideal for components requiring precise positioning and vibration resistance.
• Compliance with DIN 912/ISO 4762 standards ensures dimensional accuracy and interchangeability, facilitating seamless integration into global projects.

Professional Applications & Engineering Value

This M3 socket head cap screw is engineered to address common challenges in high-stress mechanical assemblies, such as machinery, automotive systems, and precision equipment. The black-oxide alloy steel construction combats corrosion and wear, while the Class 12.9 strength and 170,000 psi tensile strength provide reliable clamping under heavy loads, preventing loosening from vibrations. The coarse thread (0.5 mm pitch) and Class 5g6g thread fit ensure quick installation and secure fastening in materials like metals and composites, reducing assembly errors. With a 2.5 mm hex drive and standard socket head profile, it enables efficient torque application in tight spaces, making it a versatile choice for industrial applications demanding precision and longevity.

Specification Summary & Compliance

This screw features a metric M3 x 0.5 mm thread with a Class 5g6g thread fit for precise dimensional accuracy, and a partially threaded rod with a minimum thread length of 18 mm. It adheres to DIN 912/ISO 4762 standards for socket head cap screws, ensuring consistent quality and performance. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible and safe use in various industries.