S-90447A139 M18 x 65 mm DIN 931 High-Strength Metric Class 10.9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Class 10.9 strength grade and 150,000 psi tensile strength for reliable performance in demanding applications
• Superior corrosion resistance and durability thanks to black steel construction and Rockwell C32 hardness
• Secure and efficient installation with external hex drive and 27mm head width for optimal torque transmission
• Versatile partial threading design with 37mm thread length providing both gripping power and unthreaded shank strength
• Precise metric coarse threading (M18x2.5mm, Class 6g fit) ensures consistent engagement and vibration resistance
• Comprehensive regulatory compliance meeting DIN 931 standards, RoHS 3, and REACH for global industrial use
• Optimized 65mm length accommodates various material thicknesses while maintaining structural integrity

Professional Applications & Engineering Value

This M18 hex head screw delivers exceptional engineering value through its Class 10.9 steel construction and DIN 931 compliance, specifically engineered to address critical industrial fastening challenges. The partially threaded design combines the benefits of maximum thread engagement in joined materials with an unthreaded shank that resists shear forces, making it ideal for heavy machinery, structural steel connections, and automotive assemblies. The metric coarse thread (M18x2.5mm) ensures rapid installation and superior vibration resistance in high-stress environments, while the external hex drive provides reliable torque transmission without stripping. Engineered for applications requiring high tensile strength and long-term reliability, this fastener solves common issues of joint failure, corrosion, and installation inefficiency in industrial settings.

Specification Summary & Compliance

This hex head screw features precise Class 6g thread fit according to ISO metric standards with M18x2.5mm coarse threading and right-hand thread direction. Manufacturing complies with DIN 931 specifications for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. With a total length of 65mm and minimum thread length of 37mm, it maintains consistent performance within specified tolerance ranges for professional applications.