S-90272A416 5/16"-18 x 3 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 tensile strength of 60,000 psi ensures reliable performance under heavy loads and vibration
- Rockwell B70 hardness provides excellent durability and resistance to wear and deformation
- Class 2A thread fit offers optimal assembly clearance while maintaining secure fastening integrity
- Pan head design with Phillips drive enables efficient installation and removal with standard tools
- Fully threaded shank delivers maximum grip length and uniform stress distribution
- UNC coarse threading provides faster installation and reduced cross-threading risk in industrial applications
Professional Applications & Engineering Value
This zinc-plated steel pan head screw delivers exceptional engineering value across multiple industrial sectors. The combination of UNC coarse threading and Class 2A thread fit addresses common assembly challenges by providing faster installation while maintaining precise tolerances. The fully threaded design ensures maximum engagement in thick materials, distributing stress evenly to prevent joint failure. The zinc plating creates a protective barrier against corrosion in manufacturing environments, while the Rockwell B70 hardness maintains structural integrity under repetitive stress. These rounded head screws are particularly valuable in equipment assembly, structural frameworks, and machinery maintenance where heavy-duty fastening and long-term reliability are critical requirements.
Specification Summary & Compliance
Manufactured to exacting ASME B18.6.3 specifications with Class 2A thread fit tolerances, this screw maintains dimensional precision throughout its 3-1/2" length. The UNC coarse thread (5/16"-18) configuration follows standardized threading protocols for consistent performance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility and workplace safety, while the 60,000 psi tensile strength and Rockwell B70 hardness validate mechanical performance for industrial applications requiring reliable fastening solutions.
