S-91870A308 M3 x 12 mm ASTM F879M Tamper-Resistant Torx Stainless Steel Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper-resistance with specialized Torx T10 drive design prevents unauthorized access in security-critical applications
• Superior corrosion protection through 18-8 stainless steel construction and passivated surface treatment for extended service life
• Reliable thread engagement with Class 6g fit and coarse threading ensures consistent fastening performance in various materials
• High-strength performance delivering 80,000 psi tensile strength and Rockwell B96 hardness for demanding industrial applications
• Optimal flush mounting with standard 90° flat head profile that sits perfectly countersunk for smooth surface finishes
• Full-thread design provides maximum grip length and superior holding power across the entire fastener length
• Regulatory compliance meets ASTM F879M specifications while being RoHS 3 and REACH compliant for global market acceptance

Professional Applications & Engineering Value

These M3 flat head screws with tamper-resistant Torx T10 drive address critical security and reliability challenges in industrial settings. The 18-8 stainless steel construction combined with passivated finish provides exceptional resistance to corrosion, making them ideal for harsh environments where moisture or chemicals are present. The fully threaded design with Class 6g fit ensures precise engagement in both metallic and non-metallic substrates, reducing the risk of stripping or cross-threading during installation. These security screws are particularly valuable in applications requiring permanent or restricted-access fastening, such as electronic enclosures, public infrastructure, medical equipment, and transportation systems where vandalism or unauthorized tampering must be prevented while maintaining structural integrity.

Specification Summary & Compliance

This metric flat head screw features M3 x 0.5mm thread size with coarse thread spacing and Class 6g thread fit tolerance for precise metric fastening applications. Manufactured to ASTM F879M specifications, the fastener delivers consistent dimensional accuracy and mechanical properties. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility and market accessibility. The right-hand thread direction and standard 90° countersink angle provide compatibility with conventional installation tools and procedures while maintaining industry-standard performance characteristics.