S-92865A595 5/16"-18 x 3" 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 for reliable performance in demanding applications
- Superior corrosion resistance provided by zinc plating, extending service life in harsh industrial environments
- Optimized thread engagement through UNC coarse spacing and Class 2A fit, ensuring secure fastening and vibration resistance
- Enhanced durability with Rockwell C25 hardness, maintaining structural integrity under repeated stress
- Simplified installation and removal via external hex drive design, compatible with standard tools for efficient maintenance
- Full threading along the 3" length for maximum grip and adjustability in various material thicknesses
- Compliance with industry standards including ASME B18.2.1, ensuring consistent quality and interchangeability
Professional Applications & Engineering Value
This Grade 5 steel hex head screw is engineered to address critical fastening challenges in heavy-duty industrial applications. The combination of 120,000 PSI tensile strength and Rockwell C25 hardness provides reliable performance in structural assemblies, machinery, and equipment where vibration and dynamic loads are common. The zinc plating offers essential corrosion protection, making it suitable for environments exposed to moisture or chemicals. With its UNC coarse thread and Class 2A thread fit, it ensures quick assembly and secure holding power in metals, plastics, and composite materials, reducing installation time and maintenance costs while preventing loosening under stress.
Specification Summary & Compliance
This fastener meets ASME B18.2.1 specifications and SAE J429 Grade 5 requirements, ensuring dimensional accuracy and mechanical properties. The UNC 5/16"-18 thread features Class 2A tolerance for consistent fit, and the product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, supporting sustainable procurement practices.
