S-90517A160 M3 x 8 mm ASTM F879M Tamper-Resistant Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper resistance with specialized hex drive requiring unique tools, preventing unauthorized access in sensitive installations
• Superior corrosion resistance through 18-8 stainless steel construction and passivated surface treatment for extended service life
• Exceptional mechanical strength with 80,000 PSI tensile strength and Rockwell B96 hardness for demanding industrial applications
• Optimized thread engagement with Class 6g fit and coarse thread spacing ensuring secure fastening in various materials
• Flush mounting capability with standard 90° countersink angle providing smooth surface finish and aerodynamic profiles
• Full thread coverage along the 8mm length maximizing grip strength and distribution of clamping forces
• Regulatory compliance assurance meeting international standards for safety and environmental requirements

Professional Applications & Engineering Value

These M3 flat head screws with tamper-resistant hex drive address critical security and reliability challenges in industrial settings. The 18-8 stainless steel composition combined with passivated finish provides exceptional resistance to corrosion and chemical exposure, making them ideal for electronics enclosures, medical devices, and outdoor equipment where environmental factors threaten fastener integrity. The fully threaded design ensures maximum holding power across the entire engagement length, while the Class 6g thread fit maintains precise tolerances for consistent performance in high-vibration environments. The specialized drive system prevents tampering in public access areas, security panels, and regulated equipment, offering engineers a reliable solution that balances accessibility control with mechanical excellence.

Specification Summary & Compliance

Manufactured to precise metric dimensions with M3 x 0.5mm thread specification and Class 6g thread fit ensuring dimensional accuracy and compatibility. The screws conform to ASTM F879M manufacturing specifications and demonstrate compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming they contain no restricted hazardous substances. The 90° countersink angle and standard flat head profile provide proper seating in corresponding countersunk holes, while the coarse thread spacing offers optimal performance in various substrate materials.