S-90272A417 5/16"-18 x 4" 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 demanding environments
- Exceptional holding power with 60,000 psi tensile strength and Rockwell B70 hardness for reliable fastening under heavy loads
- Quick installation and removal through Phillips drive and fully threaded UNC coarse spacing design
- Optimized thread engagement with Class 2A thread fit ensuring consistent performance and reduced cross-threading risks
- Broad industrial compliance meeting ASME B18.6.3 standards plus RoHS 3 and REACH environmental regulations
- Versatile pan head design providing a balance of low profile and ample drive engagement for various applications
- Right-hand threading offering standard directional fastening compatible with common industrial equipment
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these zinc-plated steel rounded head screws deliver critical reliability where vibration resistance and long-term structural integrity are paramount. The fully threaded UNC coarse spacing combined with Class 2A thread fit ensures maximum thread engagement in wood, metal, and composite materials, preventing loosening under dynamic loads. The zinc-plated finish provides essential corrosion protection for machinery, outdoor equipment, and manufacturing assemblies exposed to moisture or chemicals. With 60,000 psi tensile strength and Rockwell B70 hardness, these Phillips drive screws maintain clamping force in high-stress connections while the pan head profile offers streamlined installation without sacrificing drive stability.
Specification Summary & Compliance
This 5/16"-18 x 4" screw features UNC coarse threads with Class 2A tolerance for consistent fit and performance. Manufactured to ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and material safety in industrial supply chains.
