S-90517A260 M5 x 10 mm ASTM F879M Tamper-Resistant Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper resistance with specialized hex drive design to prevent unauthorized removal in sensitive or public access areas.
• Superior corrosion resistance from 18-8 stainless steel and passivated finish, ensuring long-term reliability in harsh or humid environments.
• High mechanical strength with 80,000 psi tensile strength and Rockwell B96 hardness for dependable load-bearing in demanding applications.
• Secure and precise fastening through fully threaded M5 coarse pitch design, providing excellent grip and vibration resistance.
• Broad industrial compliance meeting ASTM F879M, RoHS 3, and REACH standards for safe, regulated use across global markets.
• Optimized flush mounting with standard 90° countersink angle and flat head profile for smooth, unobtrusive surface finishes.
• Accurate and reliable threading with Class 6g fit ensuring consistent engagement and ease of installation in metric assemblies.

Professional Applications & Engineering Value

This M5 flat head tamper-resistant screw is engineered to address critical security and durability challenges in industrial settings. Constructed from 18-8 stainless steel with a passivated finish, it resists oxidation and chemical exposure, making it ideal for outdoor equipment, electrical enclosures, and machinery in corrosive environments. The tamper-resistant hex drive deters vandalism and unauthorized access, essential for public infrastructure, transportation, and security panels. Its fully threaded metric coarse thread (M5 x 0.8 mm) ensures maximum holding power and reduces loosening under vibration, while the flat head design allows for seamless integration into surfaces, preventing snagging and improving safety. By combining robust materials with precision Class 6g threading, this screw delivers long-term performance in applications requiring both security and reliability.

Specification Summary & Compliance

This screw features precise metric dimensions including M5 thread size, 0.8 mm pitch, and 10 mm length, with threading manufactured to Class 6g tolerance for consistent fit. It complies with ASTM F879M specifications for mechanical properties and is certified RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring adherence to environmental and safety regulations. The 18-8 stainless steel material and passivated finish further support durability and regulatory alignment for industrial use.