S-91870A116 M6 x 50 mm ASTM F879M Tamper-Resistant Torx Stainless Steel Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper resistance with specialized Torx T30 drive design to prevent unauthorized access in high-security applications
• Superior corrosion protection through 18-8 stainless steel construction and passivated surface treatment for extended service life
• Exceptional mechanical strength delivering 80,000 psi tensile strength and Rockwell B96 hardness for demanding industrial environments
• Precision thread engagement with Class 6g tolerance and coarse 1 mm pitch ensuring reliable fastening performance
• Full-threaded design providing maximum grip length and uniform stress distribution across the entire 50 mm length
• Regulatory compliance assurance meeting ASTM F879M specifications and environmental standards including RoHS 3 and REACH
• Optimized flat head profile with 90° countersink angle for flush mounting in precision assemblies

Professional Applications & Engineering Value

This M6 flat head screw with tamper-resistant Torx T30 drive addresses critical security and reliability challenges in industrial applications. The 18-8 stainless steel material combined with passivated finish provides exceptional resistance to corrosion and chemical exposure, making it ideal for harsh environments including outdoor equipment, marine applications, and chemical processing facilities. The fully threaded metric design with Class 6g thread fit ensures precise engagement and consistent clamping force, while the specialized drive system prevents unauthorized tampering in security-sensitive installations such as public infrastructure, electrical enclosures, and access control systems. The combination of 80,000 psi tensile strength and standardized dimensions delivers reliable performance in vibration-prone applications where fastener integrity is paramount.

Specification Summary & Compliance

This metric screw features M6 x 1 mm thread specifications with Class 6g thread fit tolerance and standard right-hand threading. Manufacturing and quality compliance includes ASTM F879M specification requirements, ensuring dimensional accuracy and mechanical properties. Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, confirming the absence of restricted substances. The fully threaded 50 mm length maintains consistent thread engagement, while the 90° countersink angle provides proper seating in standard flat head applications.