S-97760A835 M12 x 35 mm ASME B18.2.3.1M, ISO 898-1 Left-Hand Threaded Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional Load-Bearing Capacity - Class 8.8 steel construction delivers 110,000 psi tensile strength for reliable performance in demanding applications
• Superior Thread Engagement - Class 6g thread fit ensures precise mating and secure fastening in coarse thread applications
• Enhanced Durability - Rockwell C21 hardness provides excellent resistance to wear and deformation under stress
• Counter-Rotational Security - Left-hand threading prevents loosening in applications where standard right-hand threads would naturally unscrew
• Optimized Torque Transmission - 19mm external hex head design allows for high-torque installation with standard tools
• Full Thread Coverage - 35mm fully threaded length maximizes grip range and distribution of clamping force
• Regulatory Compliance - Meets international standards including ASME B18.2.3.1M and ISO 898-1 for guaranteed quality and performance

Professional Applications & Engineering Value

This M12 left-hand hex head screw addresses critical engineering challenges in industrial environments where reverse-rotation forces are prevalent. The Class 8.8 steel construction combined with 1.75mm coarse pitch threading provides exceptional resistance to vibrational loosening in machinery, rotating equipment, and automotive applications. The external hex drive design ensures reliable torque application while the left-hand metric thread direction offers a secure fastening solution for components subject to counter-clockwise rotational forces. Engineered to prevent accidental disassembly, this fully threaded hex bolt maintains structural integrity in high-stress scenarios where standard fasteners would fail, making it ideal for heavy machinery, conveyor systems, and specialized manufacturing equipment requiring reverse-thread security.

Specification Summary & Compliance

This precision fastener features M12 x 1.75mm left-hand coarse threading with Class 6g thread fit tolerance, ensuring consistent performance across industrial applications. Manufactured to ASME B18.2.3.1M and ISO 898-1 specifications, the screw maintains dimensional accuracy and mechanical properties as defined by international standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted substances and meeting the latest compliance requirements for industrial components.