S-95635A694 M5 x 16 mm ASTM F879M Tamper-Resistant Hex-Drive Stainless Steel Button Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper resistance with specialized hex drive requiring unique tools, preventing unauthorized access in public or high-security installations.
• Superior corrosion resistance from 18-8 Stainless Steel and passivated finish, ensuring long-term reliability in harsh or outdoor environments.
• High mechanical strength with 80,000 psi tensile strength and Rockwell B96 hardness, providing dependable load-bearing capacity for demanding applications.
• Secure and flush installation thanks to the low-profile rounded button head design, reducing snagging risks and improving aesthetic integration.
• Precise and reliable threading with Class 6g coarse thread fit, enabling quick assembly and strong holding power in various materials.
• Full thread coverage along the 16 mm length for maximum grip and uniform stress distribution across the fastened joint.
• Broad regulatory compliance meeting ASTM F879M, RoHS 3, and REACH, ensuring safety and environmental standards for global industrial use.

Professional Applications & Engineering Value

This M5 metric screw with tamper-resistant hex drive is engineered to address critical needs in security-conscious and corrosive environments. The 18-8 Stainless Steel construction, enhanced by a passivated finish, combats rust and chemical degradation, making it ideal for outdoor fixtures, electrical enclosures, and machinery in humid or industrial settings. The rounded button head provides a smooth, low-profile finish that minimizes protrusion hazards and resists tampering, while the coarse 0.8 mm pitch and Class 6g thread ensure rapid, secure fastening into metals, plastics, and composites. These features collectively reduce maintenance, prevent vandalism, and extend service life in industrial fasteners applications such as public infrastructure, transportation, and automated systems.

Specification Summary & Compliance

This screw adheres to precise dimensional standards with M5 x 0.8 mm coarse threads and a Class 6g thread fit per metric specifications, ensuring interchangeability and consistent performance. Manufacturing and material quality comply with ASTM F879M, while environmental and safety regulations include full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006).