S-92865A231 3/8"-24 x 4 1/2" 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 120,000 psi tensile strength and Grade 5 classification for reliable performance in demanding applications
- Superior corrosion resistance through zinc plating, extending service life in industrial environments
- Precise thread engagement with UNF fine threading and Class 2A fit ensuring secure, vibration-resistant connections
- Optimized torque transmission via external hex drive design and 9/16" head width for easy installation with standard tools
- Enhanced material durability from Rockwell C25 hardness, providing excellent wear resistance and structural integrity
- Full-threaded design offering maximum grip length and versatile fastening capability across the entire 4½" length
- Regulatory compliance assurance meeting ASME B18.2.1 and RoHS 3 standards for quality and environmental safety
Professional Applications & Engineering Value
This Grade 5 hex head screw delivers critical engineering value through its high-strength steel construction and UNF fine threading, specifically engineered to address vibration-induced loosening in heavy machinery, structural assemblies, and manufacturing equipment. The zinc plated finish provides essential corrosion protection in industrial environments where moisture and chemicals are present, while the external hex drive and substantial head dimensions ensure reliable torque application during installation. With fully threaded design and 4½" length, this fastener offers maximum engagement depth for critical connections in construction, automotive, and industrial maintenance applications where failure is not an option.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit and 3/8"-24 UNF fine threading ensuring consistent performance across applications. This hex head screw complies with ASME B18.2.1 specifications where identified under SAE J429 standards, and meets RoHS 3 (2015/863/EU) compliance requirements for environmental safety. The fastener maintains Grade 5 strength classification with verified 120,000 psi tensile strength and Rockwell C25 hardness for guaranteed mechanical performance.
