S-95942A121 M5 x 12 mm Left-Hand-Thread Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Exceptional mechanical strength offering 80,000 psi tensile strength and Rockwell B85 hardness for high-stress applications.
• Secure and efficient installation via the 3mm hex drive, preventing cam-out and ensuring precise torque application.
• Reliable left-hand thread engagement with Class 6g fit and M5x0.8 coarse pitch, designed for specific assembly needs requiring reverse threading.
• Full thread coverage along the 12mm length for maximum grip and load distribution in fastened components.
• Low-profile rounded button head provides a smooth finish, reducing snagging and improving aesthetic integration.
• Compliance with major regulations including RoHS 3 and REACH, ensuring environmental safety and global market acceptance.

Professional Applications & Engineering Value

Engineered for specialized industrial and mechanical assemblies, this left-hand thread metric screw addresses unique operational requirements where standard right-hand threads are unsuitable. The 18-8 stainless steel material delivers excellent resistance to oxidation and chemical exposure, making it ideal for automotive, machinery, and outdoor equipment subjected to moisture and corrosive agents. The combination of a button head with hex drive allows for low-clearance installations while maintaining high torque capability, reducing the risk of stripping. With its coarse thread pitch and fully threaded design, it ensures rapid assembly and robust holding power in soft materials or vibration-prone settings, enhancing overall assembly integrity and reducing maintenance needs.

Specification Summary & Compliance

This fastener adheres to metric threading standards with M5 diameter, 0.8 mm coarse pitch, and Class 6g thread fit for consistent dimensional accuracy. It is manufactured to deliver precise length of 12 mm and rounded head profile specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility in industrial supply chains.