S-90272A314 5/16"-18 x 2 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, extending service life in harsh industrial environments
- Exceptional holding power with 60,000 psi tensile strength and Rockwell B70 hardness for demanding applications
- Quick installation and removal through Phillips drive and fully threaded UNC coarse thread design
- Reliable thread engagement with Class 2A thread fit ensuring consistent fastening performance
- Broad compatibility with standard 5/16"-18 components and pan head profile for versatile use
- Regulatory compliance meeting ASME B18.6.3, RoHS 3, and REACH standards for global industrial applications
- Optimized load distribution through rounded pan head design reducing surface damage
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these zinc-plated steel pan head screws deliver exceptional performance in construction, machinery assembly, and metal fabrication. The fully threaded UNC coarse thread design provides maximum grip strength while resisting vibration loosening, critical for structural integrity. The Phillips drive system enables efficient installation in high-volume production environments, while the zinc plating creates a protective barrier against corrosion in outdoor or humid conditions. With 60,000 psi tensile strength and Rockwell B70 hardness, these screws maintain clamping force under extreme loads, making them ideal for applications where fastener failure is not an option.
Specification Summary & Compliance
This 5/16"-18 x 2-1/2" pan head screw features Class 2A thread fit per UNC standards, ensuring precise dimensional accuracy and reliable mating with corresponding nuts and threaded holes. Manufactured in compliance with ASME B18.6.3 specifications for mechanical fasteners, the product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The right-hand threaded design with coarse thread spacing provides optimal performance in most industrial materials, while the standardized pan head profile ensures compatibility with common tooling and applications.
