S-97760A913 M6 x 12 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 with Class 8.8 strength rating (110,000 PSI tensile strength) for reliable performance in high-stress applications
• Superior corrosion resistance through zinc plating that protects against rust and extends service life in challenging environments
• Left-hand threading design provides secure fastening in applications where standard right-hand threads might loosen due to rotational forces
• Precise metric dimensions with M6x1mm coarse pitch threading ensuring quick assembly and compatibility with standard metric components
• Full threading along the 12mm length allows for maximum grip and adjustment flexibility in various material thicknesses
• External hex drive design enables easy installation and removal with standard wrench tools, reducing assembly time
• Consistent quality assurance through compliance with international standards including ASME B18.2.3.1M and ISO 898-1

Professional Applications & Engineering Value

These M6 left-hand thread hex screws are engineered to address critical fastening challenges in industrial settings where reverse rotation or vibration could compromise joint integrity. The Class 8.8 steel construction provides robust mechanical properties with Rockwell C21 hardness, making them ideal for machinery, equipment manufacturing, and automotive applications requiring high tensile strength. The coarse pitch metric threading (1mm pitch) ensures rapid assembly while maintaining secure fastening, particularly beneficial in production environments where efficiency is paramount. The zinc-plated finish offers essential corrosion protection for components exposed to moderate environmental conditions, extending maintenance intervals and reducing lifecycle costs. These fully threaded hex head screws with external drive configuration deliver reliable performance in mechanical assemblies where disassembly for maintenance or adjustment is periodically required.

Specification Summary & Compliance

This metric hex head screw features precise M6x1mm coarse thread with Class 6h thread fit tolerance, ensuring consistent engagement and reliable performance. The fastener maintains compliance with ASME B18.2.3.1M and ISO 898-1 standards, guaranteeing dimensional accuracy and mechanical properties. Manufactured from steel with zinc plating surface treatment, the screw delivers 110,000 PSI tensile strength and Rockwell C21 hardness. The product meets industry specifications for dimensional consistency and mechanical performance in industrial fastening applications.