S-90272A389 12-24 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
• Exceptional holding power provided by 60,000 psi tensile strength and Rockwell B70 hardness for reliable fastening performance
• Optimized installation efficiency through Phillips No. 3 drive design that prevents cam-out during torque application
• Maximum thread engagement with fully threaded design ensuring consistent clamping force across the entire fastener length
• Precise thread compatibility with Class 2A thread fit and UNC coarse threading for quick assembly and vibration resistance
• Enhanced regulatory compliance meeting ASME B18.6.3 specifications plus RoHS 3 and REACH environmental standards
• Versatile rounded pan head profile offering low-profile installation with improved aesthetic appearance

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 12-24 UNC screws deliver exceptional performance where reliability matters most. The zinc-plated steel construction provides essential corrosion protection for machinery, electrical enclosures, and assembly line equipment exposed to moderate environmental conditions. The coarse thread design ensures rapid installation and superior resistance to vibration loosening in automotive components, HVAC systems, and manufacturing fixtures. With fully threaded configuration and Phillips No. 3 drive, these fasteners eliminate the need for precise hole depth matching while providing consistent torque transmission. The combination of 60,000 psi tensile strength and Rockwell B70 hardness addresses critical shear and tensile load requirements in metal framing, equipment mounting, and structural assemblies where fastener failure is not an option.

Specification Summary & Compliance

This 5/16" length screw features precise Class 2A thread fit tolerances per UNC standards, ensuring consistent mating with corresponding nuts and threaded holes. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. The product meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations, making it suitable for global industrial supply chains. The right-hand thread direction and coarse thread spacing provide optimal engagement characteristics for rapid assembly operations while maintaining structural integrity under dynamic loading conditions.