S-90600A126 1/4"-20 x 3/8" ASME B18.3 Stainless Steel Button Head Torx Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish for long-lasting performance in harsh environments
• Enhanced torque transmission through T27 Torx drive system, reducing cam-out risk and tool wear during installation
• Precise thread engagement with Class 3A thread fit and UNC coarse spacing for reliable fastening in demanding applications
• Optimized head design featuring a rounded button profile that provides a clean appearance while minimizing protrusion
• Exceptional mechanical strength with Rockwell B55 hardness and 60,000 psi tensile strength to withstand high stress conditions
• Full threading capability ensuring maximum grip length and uniform load distribution along the entire fastener
• Regulatory compliance assurance meeting ASME B18.3 specifications while being RoHS 3 and REACH compliant for global applications

Professional Applications & Engineering Value

These 18-8 stainless steel Torx button head screws deliver exceptional value in precision assembly applications where corrosion resistance, reliable torque transmission, and consistent performance are critical. The combination of passivated finish and Class 3A thread fit ensures superior corrosion protection and precise engagement in machinery, electronic enclosures, and automotive components. The T27 drive system provides excellent torque transfer while minimizing stripping, making these rounded head screws ideal for applications requiring frequent maintenance or disassembly. With fully threaded UNC coarse spacing and right-hand threading, installation efficiency is maximized while maintaining the structural integrity needed for industrial equipment and precision instruments.

Specification Summary & Compliance

This fastener features precise dimensional control with Class 3A thread fit tolerance, UNC coarse thread spacing, and 1/4"-20 thread size. Manufacturing complies with ASME B18.3 specifications, ensuring consistent quality and performance. The product meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations, making it suitable for international industrial markets and environmentally conscious applications.