S-90272A415 5/16"-18 x 2 3/4" 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 for extended service life in demanding environments
- Exceptional load-bearing capacity with 60,000 psi tensile strength for reliable performance in heavy-duty applications
- Optimized installation efficiency through Phillips No. 4 drive design providing secure tool engagement
- Enhanced thread engagement with Class 2A fit UNC coarse threads ensuring vibration-resistant fastening
- Consistent mechanical performance maintained through Rockwell B70 hardness rating
- Maximum holding power achieved through fully threaded design along the entire 2 3/4" length
- Regulatory compliance assurance meeting ASME B18.6.3 standards with RoHS 3 and REACH environmental directives
Professional Applications & Engineering Value
These zinc-plated steel rounded head screws with 5/16"-18 UNC coarse threading provide engineering solutions for industrial assembly challenges where vibration resistance and environmental durability are critical. The pan head design with Phillips No. 4 drive offers optimal torque transmission while the zinc plating creates a protective barrier against corrosion in manufacturing facilities, outdoor equipment, and machinery applications. The Class 2A thread fit ensures reliable engagement in through-hole applications, reducing the risk of cross-threading during high-volume assembly operations. With full threading along the 2 3/4" length, these screws maintain consistent clamping force across thick materials, making them ideal for structural fastening in construction, automotive, and heavy equipment industries where 60,000 psi tensile strength delivers the necessary reliability for safety-critical connections.
Specification Summary & Compliance
Manufactured to precise inch system dimensions with Class 2A thread fit per UNC standards, these screws maintain dimensional accuracy for consistent performance. The product fully complies with ASME B18.6.3 mechanical and dimensional specifications, ensuring interchangeability and reliability in industrial applications. Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) certifications, confirming adherence to hazardous substance restrictions for global manufacturing requirements.
