S-92865A638 3/8"-16 x 3 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 the zinc plating protects against rust and extends service life in harsh industrial environments.
- High hardness rating (Rockwell C25) provides excellent wear resistance and maintains thread integrity during repeated use.
- Fully threaded UNC coarse spacing allows for faster installation and stronger holding power in a wide range of materials.
- Precise Class 2A thread fit ensures smooth assembly and consistent clamping force, minimizing production delays.
- External hex drive design offers easy installation and removal with standard tools, improving maintenance efficiency.
- Compliance with ASME B18.2.1 and SAE J429 standards guarantees consistent quality and interoperability in mechanical assemblies.
Professional Applications & Engineering Value
This Grade 5 hex head screw is engineered for demanding industrial applications where reliability is critical. The zinc plated steel construction provides a durable barrier against corrosion, making it ideal for outdoor machinery, automotive frames, and structural assemblies exposed to moisture. The UNC coarse thread and fully threaded design ensure rapid installation and superior grip in soft materials like wood or castings, reducing the risk of stripping. With a 3 1/2" length and external hex drive, it offers ample engagement for heavy-duty fastening while allowing easy access in confined spaces. This screw solves common engineering challenges like vibration loosening and material fatigue, delivering long-term stability in construction, manufacturing, and equipment maintenance projects.
Specification Summary & Compliance
This fastener features a 3/8"-16 UNC thread with Class 2A fit for precise dimensional accuracy, ensuring consistent performance. It meets ASME B18.2.1 and SAE J429 specifications for mechanical and material properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in regulated industries without hazardous substances.
