S-90605A167 M6 x 25 mm DIN 912, ISO 4762 Left-Hand Threaded 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 failure risks and maintenance costs.
• Left-hand coarse threading provides secure fastening in reverse-thread systems, preventing loosening under counter-clockwise motion in specialized machinery.
• Black-oxide coating on alloy steel offers superior corrosion resistance and reduced friction, extending service life in harsh industrial environments.
• Class 12.9 strength rating with Rockwell C37 hardness guarantees maximum durability and load-bearing capacity for heavy-duty assemblies.
• 5mm hex drive socket head allows for high-torque installation with standard tools, ensuring precise, flush mounting in confined spaces.
• Partially threaded design combines unthreaded shank stability with threaded grip flexibility, optimizing clamping force distribution.
• Global compliance with DIN 912/ISO 4762, RoHS 3, and REACH standards ensures material safety and interchangeability in international projects.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these left-hand metric socket head cap screws address critical assembly challenges where reverse threading prevents unintended disassembly from vibrational or rotational forces. The black-oxide alloy steel construction resists rust and wear in humid or abrasive conditions, while the Class 12.9 strength and M6 x 1mm coarse thread provide robust clamping in heavy machinery, automotive systems, and precision equipment. The socket head design with a 5mm hex drive facilitates easy access in tight spaces, reducing installation time and improving structural integrity. Ideal for maintenance-sensitive applications, these screws deliver consistent performance under dynamic loads, ensuring long-term reliability in industrial fastener systems.

Specification Summary & Compliance

This screw features precise Class 5g6g thread fit per ISO metric standards, ensuring consistent engagement and tolerance control. Manufactured to DIN 912/ISO 4762 specifications, it includes a minimum thread length of 24mm on a 25mm overall partially threaded rod. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material traceability for global supply chains.