S-91583A169 3/4"-10 x 2 1/4" ASME B18.2.6, ASTM A325, ASTM F3125 Medium-Strength Steel Heavy Hex Head Screws for Structural Applications

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 protection through hot-dipped galvanized steel construction, ensuring long-term durability in harsh industrial environments
• Optimized load distribution with UNC coarse threading and Class 2A thread fit, providing secure fastening and vibration resistance
• Enhanced installation efficiency featuring external hex drive and 1 1/4" head width for easy tool access and high torque application
• Versatile partial threading design with 1 3/8" thread length and 7/8" grip length for precise clamping force control
• Comprehensive compliance assurance meeting ASME B18.2.6, ASTM A325, and ASTM F3125 standards for guaranteed quality and performance
• Environmental regulation compliance with RoHS 3 and REACH standards, ensuring safe use across global industrial markets

Professional Applications & Engineering Value

Engineered for heavy-duty structural connections, these Grade A325 hex head screws deliver critical performance where failure is not an option. The hot-dipped galvanized steel construction provides exceptional barrier protection against corrosion, making them ideal for outdoor structures, bridge construction, and industrial facilities exposed to weather elements. The UNC coarse threading ensures rapid installation and superior resistance to vibration loosening, while the partially threaded design allows for precise clamping force distribution across connected materials. With their 120,000 psi tensile strength and external hex drive, these fasteners withstand extreme loads and enable high-torque installation in confined spaces, solving common challenges in steel construction, heavy machinery assembly, and infrastructure projects requiring reliable, long-lasting connections.

Specification Summary & Compliance

These 3/4"-10 hex head screws feature precise Class 2A thread fit tolerances and UNC coarse threading with 10 threads per inch. Manufacturing complies with ASME B18.2.6 dimensional specifications and material standards per ASTM A325 and ASTM F3125. The fasteners are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring they meet the latest international standards for hazardous substance restrictions and chemical safety in industrial applications.