S-91290A251 M10 x 300 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 finish extends service life in harsh or humid industrial environments.
• Precision hex drive (8mm) allows for secure tool engagement and high torque application, minimizing stripping and improving installation efficiency.
• Partially threaded design with 32mm thread length provides optimal grip and clamping force while allowing clearance in non-threaded sections.
• Class 12.9 strength rating and Rockwell C37 hardness deliver outstanding durability and resistance to wear under heavy loads.
• Coarse metric thread (M10 x 1.5mm) enables quick assembly and reliable fastening in a wide range of materials.
• Global compliance with DIN 912/ISO 4762 ensures interchangeability and consistent quality in international engineering projects.

Professional Applications & Engineering Value

This M10 socket head cap screw is engineered to address critical challenges in heavy machinery, automotive assembly, and structural frameworks where vibration and dynamic loads are common. The black-oxide alloy steel construction combats rust and oxidation, making it ideal for outdoor or chemically exposed settings. Its partially threaded rod design concentrates stress at the threaded section, enhancing joint integrity and preventing loosening. With a coarse thread pitch and hex drive, it allows for rapid installation and disassembly in maintenance operations, reducing downtime. The Class 12.9 rating ensures it withstands extreme forces, providing a dependable solution for engineers seeking longevity and safety in industrial fastening applications.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, including M10 x 1.5mm coarse thread with a Class 5g6g thread fit per ISO metric specifications, ensuring tight tolerances and consistent performance. It meets DIN 912 and ISO 4762 manufacturing norms for socket head cap screws, guaranteeing uniformity and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and safe for industrial use globally.