S-91583A626 1"-8 x 2" 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-duty structural connections.
- Superior corrosion resistance due to the hot-dipped galvanized steel coating, extending service life in harsh industrial environments.
- High hardness rating of Rockwell C19 ensures excellent wear resistance and reduced risk of stripping during installation.
- Full threading along the 2" length provides maximum grip and uniform stress distribution across the entire fastened joint.
- Class 2A thread fit with coarse UNC spacing allows for easier, faster assembly while maintaining secure fastening integrity.
- External hex drive design enables high-torque application with standard tools, reducing installation time and effort.
- Compliance with major industry standards including ASME B18.2.6, ASTM A325, and ASTM F3125, ensuring consistent quality and reliability.
Professional Applications & Engineering Value
This Grade A325 hex head screw is engineered to address critical challenges in heavy-duty industrial applications, such as structural steel framing, bridge construction, and machinery assembly. The hot-dipped galvanized steel material provides a robust barrier against rust and environmental degradation, significantly reducing maintenance needs in corrosive settings like chemical plants or outdoor installations. With its 1"-8 UNC coarse thread and Class 2A fit, the screw ensures quick alignment and secure fastening even under dynamic loads or vibration, minimizing the risk of joint failure. The combination of 120,000 psi tensile strength and fully threaded design delivers uniform clamping force, making it ideal for high-stress connections where reliability and longevity are paramount.
Specification Summary & Compliance
The screw features precise Class 2A thread fit per UNC standards with coarse spacing for optimal engagement. It is manufactured in compliance with ASME B18.2.6, ASTM A325, and ASTM F3125 specifications, ensuring dimensional accuracy and mechanical properties. Additionally, the product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for hazardous substances.
