S-95635A650 M3 x 6 mm ASTM F879M Tamper-Resistant Hex-Drive Stainless Steel Button Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper resistance with a specialized hex drive that deters unauthorized removal, ideal for secure public or high-risk environments.
• Superior corrosion resistance thanks to the 18-8 stainless steel material and passivated finish, ensuring long-term reliability in harsh or outdoor conditions.
• High mechanical strength with 80,000 psi tensile strength and Rockwell B96 hardness, providing dependable performance under heavy loads and vibration.
• Precise metric threading with Class 6g fit and coarse 0.5 mm pitch, enabling quick installation and secure fastening in various materials.
• Low-profile rounded button head design reduces snagging risks and offers a smooth, finished appearance while maintaining structural integrity.
• Full threading along the 6 mm length ensures maximum grip and uniform stress distribution, minimizing loosening in dynamic applications.
• Compliance with international standards including ASTM F879M, RoHS 3, and REACH, guaranteeing safety, quality, and environmental responsibility.

Professional Applications & Engineering Value

This M3 metric screw with a tamper-resistant hex drive and 18-8 stainless steel construction is engineered to address critical challenges in industrial and security-focused settings. The passivated finish significantly enhances corrosion resistance, making it suitable for outdoor equipment, marine hardware, or chemical processing units where moisture and corrosive agents are prevalent. Its rounded button head and fully threaded design provide a secure, flush fit that prevents vandalism and reduces protrusion-related hazards in public infrastructure, electronic enclosures, or machinery guards. By combining high tensile strength and precise Class 6g thread fit, it ensures reliable fastening in assemblies subject to vibration or thermal cycling, reducing maintenance needs and downtime. Ideal for applications requiring both security and durability, such as access panels, transportation components, and medical devices, this screw delivers consistent performance while meeting rigorous industry standards.

Specification Summary & Compliance

This product adheres to precise dimensional and performance criteria, including M3 x 0.5 mm coarse thread with Class 6g tolerance for accurate fit and ease of assembly. Manufactured in compliance with ASTM F879M specifications, it ensures consistent quality and mechanical properties. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory requirements, confirming the absence of hazardous substances and supporting environmental and workplace safety initiatives.