S-91583A226 7/8"-9 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 corrosion resistance with hot-dipped galvanized steel coating, ensuring long-term durability in harsh environments.
- High tensile strength of 120,000 PSI provides reliable performance for heavy-duty structural applications.
- Rockwell C19 hardness offers superior wear resistance and maintains fastener integrity under high stress.
- Class 2A thread fit ensures easy assembly and consistent engagement for efficient installation.
- Partially threaded design with 1 1/2" thread length and 3 1/2" grip length allows for precise clamping force distribution.
- Compliance with ASME B18.2.6, ASTM A325, and ASTM F3125 guarantees adherence to industry standards for safety and reliability.
- RoHS 3 and REACH compliance ensures environmental responsibility and regulatory adherence for global projects.
Professional Applications & Engineering Value
This Grade A325 hex head screw is engineered for demanding industrial and construction applications where structural integrity is paramount. The hot-dipped galvanized steel provides a robust barrier against corrosion, making it ideal for outdoor structures, bridges, and heavy machinery exposed to moisture and chemicals. With a coarse UNC thread and external hex drive, it offers quick installation and high torque resistance, reducing assembly time and preventing stripping. The partially threaded design ensures that the unthreaded shank bears shear loads effectively, while the threaded portion secures connections without compromising strength. These features address common challenges like joint failure, corrosion-induced degradation, and installation inefficiencies, providing a reliable high-strength fastener for critical connections in construction, infrastructure, and industrial equipment.
Specification Summary & Compliance
This screw features a 7/8"-9 UNC coarse thread with Class 2A thread fit for standard tolerance and easy assembly. It meets ASME B18.2.6, ASTM A325, and ASTM F3125 specifications, ensuring consistent quality and performance. Additionally, it is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, supporting environmental and safety regulations.
