S-92620A115 5/16"-32 x 3/4" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws
High-Strength Grade 8 Steel Hex Head 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
- Maximum load-bearing capability with 150,000 PSI tensile strength and Rockwell C33 hardness for reliable performance in demanding applications
- Superior corrosion protection through zinc yellow-chromate plating that extends service life in harsh industrial environments
- Precision thread engagement with Class 2A fit and UNEF extra fine threading for secure fastening in thin materials
- Heavy-duty construction meeting Grade 8 specifications for critical applications requiring high mechanical strength
- Full threading design providing consistent grip along the entire 3/4" length for uniform load distribution
- Industry-standard compliance with ASME B18.2.1 and SAE J429 specifications ensuring interchangeability and reliability
- External hex drive compatibility with standard 1/2" wrench sizes for easy installation and removal
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver exceptional engineering value in applications where high tensile strength and vibration resistance are critical. The UNEF extra fine thread configuration provides superior holding power in thin-section materials and precision components, while the zinc yellow-chromate plating offers enhanced corrosion protection for outdoor equipment, automotive assemblies, and industrial machinery. The fully threaded design ensures maximum engagement in tapped holes, making these steel fasteners ideal for heavy-duty applications requiring reliable, long-term performance under extreme mechanical stress and environmental exposure.
Specification Summary & Compliance
Manufactured to exacting dimensional standards with Class 2A thread fit tolerances for precision assembly. Complies with ASME B18.2.1 and SAE J429 specifications for Grade 8 fasteners, ensuring consistent quality and performance. Features 5/16"-32 UNEF extra fine threads with right-hand direction and complete threading along the 3/4" length. The zinc yellow-chromate plating provides corrosion resistance while maintaining the mechanical properties required for industrial applications.
