S-91900A309 M5 x 50 mm ASTM F879M, ISO 7380 Tamper-Resistant Torx Stainless Steel Button Head Screws

Key Features & Benefits at a Glance

• Enhanced security with tamper-resistant Torx T25 drive to prevent unauthorized removal in sensitive applications.
• Superior corrosion resistance from 18-8 stainless steel and passivated finish, ideal for harsh or humid environments.
• High mechanical strength with 80,000 psi tensile strength and Rockwell B96 hardness for reliable, long-term performance under stress.
• Easy installation and secure fit due to fully threaded M5 coarse thread with Class 6g fit, reducing assembly time and improving joint integrity.
• Low-profile, rounded button head design minimizes protrusion and provides a smooth, finished appearance while reducing snagging risks.
• Broad compliance with ASTM F879M, ISO 7380, RoHS 3, and REACH standards ensures suitability for regulated and international projects.
• Versatile use across industrial machinery, electronics, and public fixtures where durability and tamper resistance are critical.

Professional Applications & Engineering Value

This M5 x 0.8 x 50mm tamper-resistant Torx rounded head screw is engineered to address common industrial challenges such as vandalism, corrosion, and mechanical failure. Made from 18-8 stainless steel with a passivated finish, it resists rust and chemical exposure, extending service life in demanding settings like outdoor equipment, manufacturing assemblies, and security panels. The tamper-resistant Torx T25 drive deters unauthorized access, while the fully threaded coarse metric thread ensures quick, secure fastening in materials where vibration resistance is key. Its rounded button head offers a sleek profile, reducing injury risks and maintaining aesthetics in consumer-facing applications. By integrating high tensile strength and compliance with international standards, this screw provides reliable performance in industrial fastening and security-critical installations, minimizing maintenance and downtime.

Specification Summary & Compliance

This screw features precise metric coarse threading (M5 x 0.8mm) with a Class 6g thread fit for consistent engagement and tolerance. It is manufactured to meet ASTM F879M and ISO 7380 specifications, ensuring dimensional accuracy and performance reliability. Additionally, the product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming adherence to environmental and safety regulations for hazardous substances.