S-91280A366 M6 x 70 mm ISO 4017, DIN 933, SAE J1199, ISO 898 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior tensile strength of 110,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Enhanced corrosion resistance with zinc plating protects against rust and environmental degradation, extending service life in harsh industrial settings.
• High-strength Class 8.8 steel construction provides excellent durability and load-bearing capacity, ideal for heavy-duty mechanical assemblies.
• Coarse 1 mm thread pitch allows for faster installation and easier alignment, saving time and labor costs during assembly.
• Full threading along the 70 mm length offers maximum grip and uniform stress distribution, improving joint integrity in structural applications.
• Precision Class 6h thread fit ensures consistent engagement and reduces the likelihood of cross-threading, enhancing assembly reliability.
• External hex drive design enables secure tool engagement and high torque application, facilitating efficient installation and maintenance.

Professional Applications & Engineering Value

This M6 hex head screw is engineered from Class 8.8 steel to address common industrial challenges such as vibration loosening and material fatigue. The fully threaded design with a coarse metric thread ensures rapid installation in machinery, automotive frames, and construction projects, where time efficiency is critical. The zinc-plated finish provides a protective barrier against moisture and chemicals, making it suitable for outdoor equipment and manufacturing environments. Compliant with ISO 4017 and DIN 933 standards, it guarantees dimensional accuracy and interoperability, reducing downtime and replacement costs. Its 110,000 psi tensile strength and Rockwell C21 hardness offer dependable performance in high-load applications, from assembly lines to structural supports, ensuring long-term operational safety.

Specification Summary & Compliance

This fastener adheres to precise metric dimensions, including an M6 thread size with a 1 mm coarse pitch and Class 6h thread fit for consistent tolerance. It meets international standards such as ISO 4017, DIN 933, and SAE J1199, ensuring reliable performance in global applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in restricted substance-sensitive industries.