S-92865A229 3/8"-24 x 4" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 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
- Exceptional load-bearing capacity with Grade 5 classification and 120,000 psi tensile strength for reliable performance in demanding applications
- Superior corrosion resistance through zinc plating, extending service life in industrial environments
- Precise thread engagement with UNF fine threads and Class 2A fit ensuring secure fastening and vibration resistance
- Optimized torque transmission via external hex drive design and 9/16" head width for easy installation with standard tools
- Full-length threading provides consistent clamping force distribution along the entire 4" length
- Enhanced durability from Rockwell C25 hardness, maintaining structural integrity under repeated stress
- Regulatory compliance with ASME B18.2.1 and RoHS 3 standards for quality assurance and environmental safety
Professional Applications & Engineering Value
These Grade 5 hex head screws deliver critical engineering solutions for heavy machinery, structural assemblies, and industrial equipment where high tensile strength and vibration resistance are paramount. The 3/8"-24 UNF fine thread configuration provides superior thread engagement in tapped holes, reducing the risk of stripping in soft materials while maintaining clamping force under dynamic loads. The zinc plated steel construction offers essential corrosion protection for outdoor applications or environments with moderate chemical exposure. With fully threaded design and external hex drive, these fasteners enable efficient installation in confined spaces while ensuring maximum thread contact for distributed stress management across the entire 4" length.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNF fine thread specification (3/8"-24). Complies with ASME B18.2.1 mechanical standards and SAE J429 Grade 5 requirements, ensuring dimensional accuracy and mechanical properties. Meets RoHS 3 (2015/863/EU) compliance for restricted substance control. Features right-hand thread direction and external hex drive with 9/16" head width for standard tool compatibility.
