S-90388A121 M5 x 12 mm ASME B18.3.4M, ISO 7380 Tamper-Resistant Torx Steel Button Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper resistance with specialized Torx T25 drive for superior security in public or restricted-access applications
• Exceptional corrosion protection through black-oxide coating on alloy steel, extending service life in demanding environments
• High mechanical strength with 130,000 psi tensile strength and Rockwell C38 hardness for reliable performance under heavy loads
• Precision thread engagement with Class 6g fit and coarse M5x0.8 mm threading ensuring secure fastening and vibration resistance
• Streamlined installation featuring fully threaded design and rounded button head for smooth assembly and reduced surface protrusion
• Regulatory compliance assurance meeting ASME B18.3.4M, ISO 7380, RoHS 3, and REACH standards for global industrial applications
• Optimized drive efficiency with tamper-resistant Torx system providing superior torque transmission and reduced tool slippage

Professional Applications & Engineering Value

These M5 metric screws with black-oxide alloy steel construction address critical engineering challenges in security-conscious and corrosive environments. The tamper-resistant Torx T25 drive prevents unauthorized access in public infrastructure, electronic enclosures, and industrial machinery while maintaining high torque capability. The combination of Rockwell C38 hardness and 130,000 psi tensile strength ensures reliable performance in high-stress applications, from automotive assemblies to manufacturing equipment. The fully threaded design with Class 6g thread fit provides consistent clamping force across the entire fastener length, making them ideal for vibration-prone applications where security screws must maintain integrity under dynamic loads.

Specification Summary & Compliance

Manufactured to precise metric dimensions with M5x0.8 mm coarse threads meeting Class 6g tolerance standards. Complies with ASME B18.3.4M and ISO 7380 specifications for dimensional accuracy and performance. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) standards for hazardous substance restrictions. Features right-hand threading, 12 mm length, and standardized rounded button head profile for consistent industrial application.