S-91900A847 M3 x 8 mm ASTM F879M, ISO 7380 Tamper-Resistant Torx Stainless Steel Button Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper resistance with specialized Torx T8 drive, preventing unauthorized access in sensitive equipment and public installations.
• Superior corrosion resistance from 18-8 stainless steel and passivated finish, ensuring long-term reliability in harsh or outdoor environments.
• High mechanical strength with 80,000 psi tensile strength and Rockwell B96 hardness, providing dependable fastening under stress and vibration.
• Precise thread engagement with Class 6g fit and coarse M3 x 0.5 mm threading, enabling quick installation and secure hold in various materials.
• Streamlined, low-profile design with rounded button head, reducing snagging risks and offering a clean, finished appearance.
• Full compliance with international standards including ASTM F879M and ISO 7380, ensuring consistent quality and interchangeability.
• Environmental and safety adherence through RoHS 3 and REACH compliance, making them suitable for regulated industries and global supply chains.

Professional Applications & Engineering Value

These M3 tamper-resistant Torx screws are engineered to address critical challenges in security-focused and demanding industrial settings. The combination of 18-8 stainless steel and a passivated finish provides exceptional resistance to oxidation and chemical exposure, making them ideal for outdoor enclosures, medical devices, and electronic housings where moisture or cleaning agents are present. The Tamper-Resistant Torx T8 drive deters vandalism and unauthorized disassembly, crucial for public infrastructure, transportation systems, and secure machinery. With a fully threaded design and coarse pitch, they ensure rapid assembly and reliable clamping force, reducing installation time and maintenance needs in high-volume production or field service applications.

Specification Summary & Compliance

This M3 x 0.5 mm x 8 mm screw features a Class 6g thread fit per metric standards, ensuring precise dimensional accuracy and compatibility. Manufacturing and performance adhere to ASTM F879M and ISO 7380 specifications. The product is confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and health safety regulations for use in various international markets.