S-91290A336 M6 x 40 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 industrial environments, minimizing maintenance needs.
• High hardness (Rockwell C37) provides excellent wear resistance and durability, maintaining thread integrity through repeated use.
• Precise Class 5g6g thread fit offers consistent engagement and vibration resistance, enhancing assembly stability.
• Partially threaded design allows for secure clamping on specific sections, improving load distribution and joint reliability.
• Standard hex socket drive (5mm) enables easy installation with common tools, reducing assembly time and labor costs.
• Compliance with DIN 912/ISO 4762 guarantees dimensional accuracy and interchangeability, ensuring compatibility with global engineering standards.

Professional Applications & Engineering Value

This M6 socket head cap screw is engineered for demanding industrial applications where strength, precision, and corrosion resistance are critical. The Black-Oxide alloy steel construction combats rust and oxidation in humid or chemically aggressive environments, while the Class 12.9 strength rating and coarse thread (1mm pitch) provide robust clamping force and rapid assembly in machinery, automotive systems, and heavy equipment. The partially threaded shank concentrates stress away from the thread roots, reducing the risk of fatigue failure in dynamic loads. With a 5mm hex drive and standardized DIN 912/ISO 4762 dimensions, it ensures quick, tool-friendly installation and seamless replacement in OEM and MRO scenarios, boosting operational efficiency and assembly reliability.

Specification Summary & Compliance

This fastener features an M6 x 1mm coarse thread with a Class 5g6g thread fit per ISO metric standards, ensuring precise tolerance for secure fastening. It is manufactured in accordance with DIN 912 (identical to ISO 4762) for dimensional consistency and head profile accuracy. The screw is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances and supporting environmentally responsible sourcing for global supply chains.