S-90283A848 5/16"-18 x 1/2" ASME B18.6.3 Steel Pan Head Slotted Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Superior load-bearing capacity with 60,000 psi tensile strength and Rockwell B60 hardness for reliable performance under stress
• Optimized installation efficiency through UNC coarse thread spacing and Class 2A fit for faster assembly and secure fastening
• Enhanced torque transmission with slotted pan head design providing reliable drive engagement and flush surface mounting
• Maximum thread engagement with fully threaded design ensuring consistent holding power across the entire fastener length
• Broad industrial compatibility with right-hand thread direction meeting standard machinery and equipment requirements
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards for global applications

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these zinc-plated steel slotted pan head screws deliver exceptional performance where corrosion resistance and mechanical strength are critical. The UNC coarse thread configuration with Class 2A fit ensures rapid installation while maintaining precise tolerances, reducing assembly time in high-volume manufacturing environments. The rounded pan head profile provides a low-profile finish that minimizes snagging hazards while the slotted drive accommodates standard tooling. With 60,000 psi tensile strength and Rockwell B60 hardness, these fasteners maintain structural integrity in machinery, electrical enclosures, and heavy equipment where vibration resistance and long-term reliability are paramount. The combination of full threading and zinc plating creates a versatile solution that withstands environmental exposure while providing consistent clamping force throughout the fastener length.

Specification Summary & Compliance

This 5/16"-18 x 1/2" slotted pan head screw features precision UNC coarse threads with Class 2A thread fit tolerance for consistent engagement and reliable performance. Manufacturing complies with ASME B18.6.3 standards ensuring dimensional accuracy and mechanical properties. The product meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations regarding chemical safety, making it suitable for international industrial applications requiring certified components.