S-90272A622 1/4"-20 x 5/16" ASME B18.6.3 Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Excellent driving torque transmission through No. 3 Phillips drive design, reducing tool slippage and installation time
• Reliable thread engagement with UNC coarse threading and Class 2A fit, ensuring consistent fastening performance
• High mechanical strength with 60,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
• Optimal head clearance provided by standard pan head profile with 0.492" diameter for secure seating
• Full thread coverage across the entire 5/16" length for maximum grip and load distribution
• Regulatory compliance assurance meeting ASME B18.6.3 standards and environmental regulations for quality and safety

Professional Applications & Engineering Value

This zinc-plated steel Phillips pan head screw delivers exceptional engineering value across industrial applications where vibration resistance and environmental durability are critical. The combination of UNC coarse threads and Class 2A thread fit provides rapid assembly in production environments while maintaining precise tolerances. The fully threaded design ensures maximum engagement in thin materials and sheet metal applications, while the zinc plating offers reliable protection against corrosion in manufacturing facilities, outdoor equipment, and electrical enclosures. The rounded pan head profile with Phillips drive facilitates quick installation without specialized tools, making it ideal for maintenance operations and high-volume assembly lines where efficiency and reliability are paramount.

Specification Summary & Compliance

This fastener maintains Class 2A thread fit tolerance per UNC standards with precise dimensional control. Manufacturing complies with ASME B18.6.3 specifications for mechanical properties and dimensional requirements. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) regulations for chemical safety, ensuring environmental responsibility in industrial supply chains.