S-90388A516 M6 x 40 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 T27 Torx drive to prevent unauthorized access in high-security environments
• Superior corrosion protection through black-oxide coating on alloy steel, extending service life in demanding conditions
• Optimized load distribution with rounded button head design that reduces surface stress and prevents damage to materials
• Exceptional mechanical strength with 130,000 psi tensile strength and Rockwell C38 hardness for heavy-duty applications
• Reliable thread engagement through Class 6g precision threads ensuring consistent fastening performance
• Full-thread coverage along the 40mm length provides maximum grip and vibration resistance
• Global compliance assurance meeting both ASME B18.3.4M and ISO 7380 standards for international project requirements

Professional Applications & Engineering Value

This M6 metric screw with tamper-resistant Torx T27 drive addresses critical security and reliability challenges in industrial settings. The black-oxide alloy steel construction provides exceptional corrosion resistance while maintaining the high tensile strength needed for structural applications. The rounded head profile distributes clamping force evenly, preventing surface damage to sensitive materials. With fully threaded coarse pitch design and Class 6g thread fit, these screws deliver superior vibration resistance in machinery, electronic enclosures, and public infrastructure where unauthorized access prevention is paramount. The combination of 130,000 psi tensile strength and specialized drive system makes these security screws ideal for permanent installations requiring both mechanical integrity and access control.

Specification Summary & Compliance

Manufactured to precise Class 6g thread tolerance with M6 x 1 mm coarse thread specifications. Complies with ASME B18.3.4M and ISO 7380 standards for dimensional accuracy and performance. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. Features 40mm fully threaded design with right-hand thread direction and 10.5mm head diameter for consistent installation across industrial applications.