S-91583A157 5/8"-11 x 5" 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 structural integrity with 120,000 psi tensile strength and Rockwell C19 hardness for reliable performance in demanding applications.
- Superior corrosion resistance from hot-dipped galvanized steel, ensuring long-term durability in harsh industrial environments.
- Optimized load distribution through a partially threaded design, providing a strong grip over a 3 3/4" grip length.
- Easy installation and removal with an external hex drive and 1 1/16" head width, compatible with standard tools.
- Precise and secure fastening with UNC coarse threads and Class 2A thread fit, minimizing the risk of cross-threading.
- Compliance with major industry standards including ASME B18.2.6, ASTM A325, and ASTM F3125, ensuring quality and reliability.
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements.
Professional Applications & Engineering Value
Engineered for heavy-duty structural connections, this Grade A325 hex head screw delivers exceptional performance in construction, infrastructure, and industrial machinery. The hot-dipped galvanized steel construction provides a robust barrier against rust and corrosion, significantly extending service life in outdoor or high-moisture environments. Its UNC coarse thread and Class 2A thread fit ensure quick assembly and reliable clamping force, reducing installation time while maintaining joint integrity. The partially threaded design concentrates strength where it's needed most, preventing shear failure under dynamic loads. Ideal for steel framing, bridgework, and equipment bases, this fastener solves critical challenges in vibration resistance and long-term structural stability, backed by 120,000 psi tensile strength for maximum safety.
Specification Summary & Compliance
This screw features a 5/8"-11 UNC coarse thread with Class 2A thread fit for standard tolerance and ease of assembly. It meets ASME B18.2.6, ASTM A325, and ASTM F3125 specifications, ensuring dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global industrial use without hazardous substances.
