S-90471A220 6-32 x 1/2" ASME B18.6.3 Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
• Exceptional mechanical strength with 60,000 psi tensile strength and Rockwell B70 hardness for reliable performance under stress
• Optimized drive engagement through Phillips No. 2 drive design, preventing cam-out and ensuring secure installation
• Enhanced flush mounting capability with 100° countersink angle and standard flat head profile for smooth surface finishes
• Reliable thread performance with UNC coarse threading and Class 2A fit, providing consistent engagement and vibration resistance
• Full-length threading ensures maximum grip strength and uniform load distribution across the entire fastener length
• Right-hand thread direction offers intuitive installation following standard industry practices

Professional Applications & Engineering Value

These zinc-plated steel flat head screws deliver critical performance advantages for industrial assembly applications where flush surface mounting and corrosion resistance are paramount. The combination of 60,000 psi tensile strength and Rockwell B70 hardness ensures reliable fastening in machinery, electrical enclosures, and metal fabrication where vibration and mechanical stress are concerns. The UNC coarse threading with Class 2A fit provides excellent engagement in various materials while the 100° countersink angle creates seamless transitions in panel mounting and precision equipment. The Phillips No. 2 drive system offers familiar, efficient installation without specialized tools, making these fully threaded screws ideal for high-volume production environments requiring consistent, reliable fastening solutions.

Specification Summary & Compliance

This 6-32 x 1/2" flat head screw features precise Class 2A thread fit tolerances with UNC coarse threading and right-hand thread direction. Manufacturing and dimensional specifications strictly comply with ASME B18.6.3 standards for consistent quality and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) requirements, ensuring environmental responsibility and workplace safety in global industrial applications.