S-91290A371 M12 x 210 mm DIN 912, ISO 4762, ISO 898-1 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi (Class 12.9) ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Black-oxide finish on alloy steel provides enhanced corrosion resistance, extending service life in demanding industrial environments.
• Partially threaded design with a minimum 35mm thread length allows for precise clamping force control and secure fastening in varied material thicknesses.
• Hex socket drive (10mm) offers high torque transmission and reduced risk of cam-out, enabling efficient installation in confined spaces.
• Coarse thread pitch (1.75mm) facilitates quicker assembly and disassembly, saving time in maintenance and production cycles.
• Compliance with DIN 912/ISO 4762 standards guarantees dimensional accuracy and interchangeability, ensuring consistent quality in global applications.
• RoHS 3 and REACH compliance assures environmental safety and regulatory adherence, supporting sustainable manufacturing practices.

Professional Applications & Engineering Value

This M12 socket head cap screw is engineered from black-oxide alloy steel with a Class 12.9 strength rating and Rockwell C37 hardness, making it ideal for heavy-duty applications such as machinery, automotive assemblies, and construction equipment. The partially threaded design, combined with a coarse metric thread and 210mm overall length, addresses common challenges like vibration loosening and misalignment by providing secure, adjustable fastening. Its hex drive style ensures easy installation in tight spaces, while the black-oxide surface treatment enhances durability against wear and corrosion, reducing maintenance needs and downtime in industrial settings.

Specification Summary & Compliance

This screw features a metric thread size M12 x 1.75mm with Class 6g thread fit for precise tolerance, ensuring reliable engagement. It adheres to DIN 912 and ISO 4762 standards for dimensional consistency and ISO 898-1 for mechanical properties. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets environmental and safety requirements for global use.