S-90499A030 5/16"-18 Hex Nuts
Hex Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Exceptional tensile strength from Grade 8 steel construction, ensuring reliable performance in high-stress industrial environments.
- Superior vibration resistance with coarse 5/16"-18 UNC threads, maintaining secure fastening under dynamic loads.
- Precise thread engagement with Class 2B fit, reducing the risk of cross-threading and enabling smoother assembly.
- Durable external hex drive design allows for high-torque application using standard wrenches, minimizing tool slippage.
- Robust corrosion resistance from high-quality steel material, extending service life in demanding conditions.
- Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe use across global industrial sectors.
- Standard 1/2" width and 17/64" height profile for easy integration with existing components and tooling.
Professional Applications & Engineering Value
This Grade 8 steel hex nut with 5/16"-18 UNC coarse threads is engineered to address critical challenges in heavy machinery, construction, and automotive assemblies. The Class 2B thread fit ensures consistent engagement with mating components, reducing assembly time and preventing thread damage during high-cycle operations. Made from high-strength steel, it withstands extreme tensile and vibrational stresses that cause standard fasteners to fail. The external hex drive profile accommodates common industrial tools, facilitating quick maintenance in confined spaces. Ideal for structural connections, equipment frames, and powertrain systems, this nut delivers long-term reliability while meeting strict RoHS and REACH compliance for global supply chain integration.
Specification Summary & Compliance
This hex nut features 5/16"-18 UNC coarse threads with Class 2B thread fit per ASME/ANSI standards, ensuring dimensional accuracy and interchangeability. The standard hex profile measures 1/2" width and 17/64" height, manufactured from Grade 8 steel for high mechanical strength. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety protocols for industrial fasteners.
