S-90388A117 M4 x 12 mm ASME B18.3.4M, ISO 7380 Tamper-Resistant Torx Steel Button Head Screws

Key Features & Benefits at a Glance

• Superior tamper resistance with T15 Torx drive design to prevent unauthorized access in security-critical applications
• Enhanced corrosion protection through black-oxide coating on alloy steel, extending service life in harsh environments
• High mechanical strength with 130,000 psi tensile strength and Rockwell C38 hardness for reliable load-bearing performance
• Precision threading with Class 6g fit and coarse 0.7mm pitch ensuring secure fastening and vibration resistance
• Low-profile rounded head design providing smooth finished appearance while minimizing protrusion in confined spaces
• Full compliance with international standards including ASME B18.3.4M and ISO 7380 for guaranteed interchangeability
• Environmental regulation compliance meeting RoHS 3 and REACH requirements for safe use across global markets

Professional Applications & Engineering Value

These M4 metric screws with tamper-resistant Torx drive address critical security and reliability challenges in industrial applications. The black-oxide alloy steel construction provides exceptional corrosion resistance for machinery, electronic enclosures, and outdoor equipment where environmental exposure is a concern. The fully threaded design with Class 6g thread fit ensures maximum engagement strength and vibration resistance in high-stress assemblies. The rounded button head profile offers both aesthetic appeal and practical safety by eliminating sharp edges while the T15 drive system prevents tampering in public access equipment, security panels, and regulated installations. These metric screws deliver engineering confidence for applications demanding both security features and long-term durability.

Specification Summary & Compliance

Manufactured to precise metric dimensions (M4 x 0.7mm pitch x 12mm length) with Class 6g thread tolerance ensuring consistent fit and performance. Complies with ASME B18.3.4M and ISO 7380 standards for dimensional accuracy and mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming absence of restricted substances. The right-hand coarse threading provides efficient installation while the fully threaded design maximizes holding power across the entire fastener length.