S-92865A101 5/16"-24 x 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 tensile strength of 120,000 PSI ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance from zinc plating extends service life in harsh industrial environments, minimizing maintenance needs.
- Precision UNF fine threading with Class 2A fit provides secure, vibration-resistant connections for critical assemblies.
- High hardness (Rockwell C25) enhances wear resistance, maintaining thread integrity through repeated use.
- Full threading design allows for maximum grip along the entire shank, improving load distribution in heavy-duty applications.
- External hex drive enables easy installation and high torque application with standard tools, boosting assembly efficiency.
- Compliance with major standards including ASME B18.2.1 and SAE J429 ensures consistent quality and interchangeability.
Professional Applications & Engineering Value
This Grade 5 steel hex head screw is engineered to address common industrial fastening challenges, such as joint loosening under dynamic loads and corrosion-induced degradation. The UNF fine thread configuration, combined with Class 2A thread fit, delivers superior clamping force and vibration resistance in machinery, automotive, and structural applications. The zinc plating provides a sacrificial layer that significantly slows rust formation, making it ideal for outdoor equipment or humid environments. With its fully threaded design and external hex drive, it ensures quick installation and reliable performance in heavy-duty industrial applications where fastener integrity is critical to operational safety and longevity.
Specification Summary & Compliance
This fastener features precise Class 2A thread fit per UNF standards, ensuring consistent engagement and interchangeability. It is manufactured in compliance with ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and mechanical properties. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global supply chains without hazardous substance restrictions.
