S-90272A413 5/16"-18 x 1/4" 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 harsh industrial environments
- Exceptional tensile strength rated at 60,000 psi ensures reliable performance under heavy loads and vibration
- Optimized thread engagement with UNC coarse threads and Class 2A fit provides secure fastening and easier installation
- Enhanced driving efficiency through Phillips No. 4 drive design reduces cam-out and improves torque transmission
- Full threading capability allows maximum grip length and uniform stress distribution across the entire fastener
- Rockwell B70 hardness maintains structural integrity and prevents deformation during installation and service
- Regulatory compliance with ASME B18.6.3, RoHS 3, and REACH standards ensures quality and environmental responsibility
Professional Applications & Engineering Value
These zinc-plated steel pan head screws deliver critical performance advantages for industrial assembly operations where corrosion resistance and high tensile strength are paramount. The combination of UNC coarse threading and Class 2A thread fit ensures rapid installation while maintaining precise tolerances for vibration-resistant connections. The Phillips drive system provides reliable torque transfer without specialized tools, making these fully threaded screws ideal for machinery, equipment manufacturing, and structural applications requiring consistent clamping force. The rounded pan head profile offers a low-profile finish that minimizes snagging while distributing load effectively across joined materials.
Specification Summary & Compliance
Manufactured to exacting ASME B18.6.3 specifications with Class 2A thread fit tolerances for consistent performance. The 5/16"-18 UNC coarse thread configuration ensures proper engagement in various materials, while the zinc-plated steel construction provides reliable corrosion protection. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting international standards for industrial fastener applications.
