S-90517A330 M6 x 20 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 access in sensitive applications
• Superior corrosion protection through 18-8 stainless steel construction and passivated finish for extended service life
• Reliable mechanical performance with 80,000 psi tensile strength and Rockwell B96 hardness for demanding environments
• Precision thread engagement with Class 6g fit and coarse thread spacing ensuring secure fastening in various materials
• Optimized flush mounting through standard flat head profile and 90° countersink angle for smooth surface finishes
• Full-threaded design providing maximum grip length and uniform load distribution across the entire fastener
• Comprehensive compliance meeting international standards for quality, safety, and environmental regulations

Professional Applications & Engineering Value

These M6 flat head screws with tamper-resistant hex drive address critical security and durability challenges in industrial settings. The 18-8 stainless steel material combined with passivated finish provides exceptional resistance to corrosion and chemical exposure, making them ideal for harsh environments like outdoor equipment, marine applications, and chemical processing facilities. The fully threaded metric coarse thread design ensures maximum holding power in softer materials while the Class 6g thread fit maintains precise tolerances for consistent performance. Engineering teams value these security screws for permanent installations where vandalism prevention and long-term reliability are paramount, particularly in public infrastructure, transportation systems, and access control panels where unauthorized tampering could compromise safety or functionality.

Specification Summary & Compliance

This fastener maintains Class 6g thread fit precision according to metric standards with M6 x 1mm coarse thread specifications. Manufacturing complies with ASTM F879M mechanical properties and dimensional requirements. The product meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations for chemical safety, ensuring environmental responsibility and workplace safety standards are maintained throughout the product lifecycle.