S-91583A229 7/8"-9 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 corrosion resistance with hot-dipped galvanized steel coating, ideal for outdoor and harsh industrial environments.
- High tensile strength of 120,000 PSI ensures reliable performance in heavy-duty structural and construction applications.
- Rockwell C19 hardness provides superior durability and resistance to wear under high-stress conditions.
- Coarse UNC threads with Class 2A fit offer quick assembly and secure fastening in various materials.
- Partially threaded design allows for precise clamping force control and improved joint stability.
- External hex drive and hex head facilitate easy installation with standard tools, reducing assembly time.
- Compliance with ASME, ASTM, RoHS, and REACH standards guarantees quality, safety, and environmental responsibility.
Professional Applications & Engineering Value
Engineered for demanding industrial and construction settings, these Grade A325 hex head screws deliver unmatched reliability in structural steel connections, bridge construction, and heavy machinery assembly. The hot-dipped galvanized steel coating provides a robust barrier against rust and corrosion, extending service life in exposed environments. With a coarse UNC thread and Class 2A thread fit, these screws ensure rapid installation and vibration resistance, minimizing loosening in dynamic loads. The partially threaded configuration concentrates strength where needed, preventing shear failures and enhancing load distribution. Ideal for industrial fastening applications requiring high tensile strength and compliance with rigorous standards like ASME B18.2.6 and ASTM A325.
Specification Summary & Compliance
This 7/8"-9 UNC hex head screw features precise Class 2A thread fit tolerances and coarse threading for consistent performance. Manufactured to meet ASME B18.2.6, ASTM A325, and ASTM F3125 specifications, ensuring dimensional accuracy and mechanical properties. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally safe and sustainable industrial practices.
