S-91900A857 M5 x 16 mm ASTM F879M, ISO 7380 Tamper-Resistant Torx Stainless Steel Button Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper resistance with T25 Torx drive for secure installations in public or high-security environments
• Superior corrosion resistance from 18-8 stainless steel and passivated finish, ideal for harsh industrial conditions
• High mechanical strength with 80,000 psi tensile strength and Rockwell B96 hardness for reliable, long-term performance
• Secure and precise fastening ensured by Class 6g thread fit and fully threaded design for consistent engagement
• Broad compliance with ASTM F879M and ISO 7380 standards, meeting rigorous engineering specifications
• Environmental safety through RoHS 3 and REACH compliance, suitable for regulated industries
• Easy installation with a rounded button head design that reduces surface damage and provides a clean finish

Professional Applications & Engineering Value

This M5 metric screw with a 0.8 mm coarse pitch and tamper-resistant Torx drive is engineered to address critical challenges in industrial assembly and maintenance. The 18-8 stainless steel construction, enhanced by a passivated finish, provides exceptional resistance to rust and chemical exposure, making it ideal for outdoor equipment, machinery, and electronic enclosures. Its fully threaded design and Class 6g thread fit ensure tight, vibration-resistant connections, reducing the risk of loosening in dynamic environments. By incorporating a rounded button head, it minimizes protrusion and prevents injury, while the tamper-resistant feature deters unauthorized access. These attributes deliver reliable performance in security-sensitive applications, such as public infrastructure, transportation, and automated systems, where durability and safety are paramount.

Specification Summary & Compliance

This screw features precise metric threading (M5 x 0.8 mm) with a Class 6g thread fit for accurate engagement and consistent performance. It complies with ASTM F879M and ISO 7380 manufacturing standards, ensuring dimensional accuracy and reliability. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for industrial use.