S-91583A253 1"-8 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
- Superior corrosion resistance from hot-dipped galvanized steel coating, ensuring long-term reliability in harsh industrial environments.
- Exceptional structural integrity with 120,000 psi tensile strength and Rockwell C19 hardness, designed for heavy-duty load-bearing applications.
- Optimized thread engagement through UNC coarse threading and Class 2A fit, facilitating faster installation and reducing cross-threading risks.
- Enhanced torque transmission via the external hex drive and 1 5/8" head width, allowing for secure tightening with standard tools.
- Versatile partial threading with 1 3/4" thread length and 4 1/4" grip length, providing precise clamping force distribution in structural connections.
- Full regulatory compliance with RoHS 3 and REACH, meeting international environmental and safety standards for industrial use.
- Guaranteed performance consistency through adherence to ASME B18.2.6, ASTM A325, and ASTM F3125 specifications.
Professional Applications & Engineering Value
Engineered for structural steel connections, bridge construction, and heavy machinery assembly, this Grade A325 hex head screw addresses critical challenges in high-vibration environments. The hot-dipped galvanized steel construction provides a sacrificial zinc layer that combats rust and chemical exposure, extending service life in outdoor or corrosive settings. Its partially threaded design concentrates clamping force precisely at the joint interface, preventing loosening under dynamic loads. The 1"-8 UNC coarse thread ensures rapid installation in thick materials while maintaining Class 2A tolerance for consistent fit. These characteristics make it ideal for applications demanding reliable, high-strength fasteners that withstand extreme tensile and shear forces without compromising safety or performance.
Specification Summary & Compliance
This fastener maintains Class 2A thread fit per UNC standards with precise dimensional control. Manufacturing follows ASME B18.2.6, ASTM A325, and ASTM F3125 specifications for structural bolting. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) ensures adherence to hazardous substance restrictions and chemical safety protocols.
