S-91870A115 M5 x 60 mm ASTM F879M Tamper-Resistant Torx Stainless Steel Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper resistance with T25 Torx drive prevents unauthorized access in high-security applications
• Superior corrosion resistance through 18-8 stainless steel construction and passivated finish for long-term reliability
• Optimized load distribution with flat head design and 90° countersink angle for flush mounting in precision assemblies
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B96 hardness for demanding industrial environments
• Reliable thread engagement through Class 6g thread fit and coarse pitch (0.8mm) for quick installation and vibration resistance
• Full-length threading provides maximum grip along the entire 60mm length for superior fastening integrity
• Regulatory compliance meets ASTM F879M specifications and environmental standards (RoHS 3, REACH) for global applications

Professional Applications & Engineering Value

This M5 flat head tamper-resistant Torx screw delivers critical security and performance advantages for industrial applications where unauthorized access prevention is paramount. The combination of 18-8 stainless steel material and passivated finish creates a robust barrier against corrosion, extending service life in harsh environments. The T25 tamper-resistant drive system ensures only authorized personnel can perform maintenance or adjustments, making it ideal for public infrastructure, electrical enclosures, and machinery requiring controlled access. The metric coarse threading (0.8mm pitch) with Class 6g tolerance provides excellent vibration resistance while the fully threaded design maximizes pull-out strength. These industrial fasteners solve critical challenges in security-conscious applications where reliability and tamper-proof characteristics are non-negotiable.

Specification Summary & Compliance

This security screw maintains precise Class 6g thread fit according to metric standards with M5 x 0.8mm coarse threading. Manufacturing complies with ASTM F879M specifications for consistent quality and performance. The fastener demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial markets requiring verified material safety and environmental responsibility.