S-90272A575 5/16"-18 x 1/2" ASME B18.6.3 Steel Pan Head Phillips Screws
Steel Pan Head Phillips Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
- High-torque installation capability with No. 4 Phillips drive design that prevents cam-out and ensures secure fastening
- Exceptional load-bearing capacity with 60,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
- Reliable thread engagement through Class 2A coarse UNC threads that resist vibration loosening
- Optimized head design with rounded pan profile providing excellent bearing surface without sharp edges
- Full-length threading across the entire 1/2" length for maximum grip range and installation flexibility
- Regulatory compliance assurance meeting ASME B18.6.3 standards and environmental regulations for global supply chain compatibility
Professional Applications & Engineering Value
These zinc-plated steel rounded head screws deliver critical performance advantages for industrial assembly operations. The combination of 5/16"-18 UNC coarse threading with Class 2A fit ensures rapid installation while maintaining vibration resistance in machinery, equipment frames, and structural components. The pan head design with Phillips drive provides flush mounting with sufficient torque transmission for production line efficiency. The zinc plating offers essential corrosion protection for manufacturing environments while the 60,000 psi tensile strength guarantees joint integrity under dynamic loads. These fully threaded screws are engineered to solve common fastening challenges including material compatibility, installation speed, and long-term reliability in industrial applications.
Specification Summary & Compliance
This 5/16"-18 UNC screw features precise Class 2A thread fit with coarse thread spacing for optimal engagement. Manufacturing complies with ASME B18.6.3 standards ensuring dimensional accuracy and performance consistency. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, confirming environmental regulation adherence for international industrial applications.
