S-91583A158 5/8"-11 x 6" ASME B18.2.6, ASTM A325, ASTM F3125 Medium-Strength Steel Heavy Hex Head Screws for Structural Applications
Medium-Strength Steel Heavy Hex Head Screws for Structural Applications
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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 heavy structural connections.
- Superior corrosion resistance due to the hot-dipped galvanized steel coating, extending service life in harsh environments.
- High hardness rating (Rockwell C19) ensures durability and resistance to wear during installation and use.
- Optimized thread design with UNC coarse threads and Class 2A fit for faster assembly and reduced cross-threading risks.
- Partially threaded shank provides a 4 3/4" grip length for secure clamping in structural steel and construction applications.
- Compliance with major industry standards including ASME B18.2.6, ASTM A325, and ASTM F3125 for guaranteed quality and interoperability.
- Environmental and safety compliance with RoHS 3 and REACH regulations, ensuring safe use in regulated markets.
Professional Applications & Engineering Value
This Grade A325 hex head screw is engineered for demanding structural applications where high tensile strength and corrosion resistance are critical. The hot-dipped galvanized steel coating provides a robust barrier against rust and environmental degradation, making it ideal for bridges, building frames, and heavy machinery exposed to outdoor conditions. The coarse UNC thread and external hex drive facilitate quick installation with standard tools, reducing labor time while maintaining a secure fit. Its partially threaded design ensures that the unthreaded shank bears shear loads effectively, preventing joint failure in dynamic or vibratory environments. By meeting ASME B18.2.6 and ASTM standards, this bolt delivers consistent performance and reliability, addressing common challenges like galvanic corrosion and structural fatigue in industrial settings.
Specification Summary & Compliance
This fastener features a 5/8"-11 UNC thread with Class 2A thread fit for standard tolerance and easy assembly. It complies with ASME B18.2.6, ASTM A325, and ASTM F3125 manufacturing specifications, ensuring dimensional accuracy and mechanical properties. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for hazardous substances.
