S-91870A306 M3 x 10 mm ASTM F879M Tamper-Resistant Torx Stainless Steel Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced Security: Tamper-resistant Torx T10 drive prevents unauthorized removal, ideal for public or high-risk environments.
• Superior Corrosion Resistance: 18-8 stainless steel construction with passivated finish ensures long-term durability in harsh or outdoor conditions.
• High Mechanical Strength: 80,000 psi tensile strength and Rockwell B96 hardness provide reliable performance under heavy loads and vibration.
• Precise Thread Engagement: Class 6g thread fit and M3 x 0.5mm coarse threading offer easy installation and secure fastening in metric assemblies.
• Full Thread Coverage: Fully threaded 10mm length maximizes grip and distribution of clamping force across the entire fastener.
• Regulatory Compliance: Meets ASTM F879M, RoHS 3, and REACH standards, ensuring safety and environmental responsibility for global industrial use.
• Flush Mounting: Standard flat head with 90° countersink angle allows for a smooth, unobtrusive surface finish in assembled products.

Professional Applications & Engineering Value

This M3 flat head screw is engineered to address critical needs in security-sensitive and demanding industrial environments. The 18-8 stainless steel material, combined with a passivated finish, provides exceptional resistance to corrosion and chemical exposure, making it suitable for outdoor equipment, marine applications, and electronics enclosures. The tamper-resistant Torx T10 drive is a key feature for preventing vandalism or unauthorized access in public infrastructure, transportation systems, and secure machinery. Its fully threaded design and Class 6g thread fit ensure consistent, reliable clamping in metric coarse thread applications, reducing the risk of loosening under dynamic stresses. By integrating high tensile strength and compliance with international standards, this fastener delivers long-term reliability and safety for OEMs and maintenance teams in aerospace, automotive, and industrial automation sectors.

Specification Summary & Compliance

This fastener features precise M3 x 0.5 mm coarse threading with a Class 6g thread fit for accurate engagement in metric assemblies. Manufacturing and performance adhere to ASTM F879M specifications, ensuring consistent quality and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environmentally conscious and regulated markets. Additional details include a standard flat head profile with a 90° countersink angle, right-hand thread direction, and full threading along the 10 mm length.