S-91583A178 3/4"-10 x 3" 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 corrosion resistance through hot-dipped galvanized steel coating, ensuring long-term reliability in harsh environments
• Superior structural integrity with Grade A325 classification and 120,000 psi tensile strength for heavy-duty applications
• Optimized torque transmission via external hex drive design, enabling secure installation with standard tools
• Enhanced load distribution through partially threaded configuration with 1 5/8" grip length for improved joint stability
• Precision threading compatibility with UNC coarse 3/4"-10 threads and Class 2A fit for reliable engagement
• Industry-standard compliance meeting ASME B18.2.6, ASTM A325, and ASTM F3125 specifications for quality assurance
• Environmental regulation adherence with RoHS 3 and REACH compliance for responsible manufacturing

Professional Applications & Engineering Value

Engineered for structural steel connections in construction and industrial applications, these Grade A325 hex head screws deliver critical performance where vibration resistance and load-bearing capacity are paramount. The hot-dipped galvanized steel construction provides superior protection against environmental degradation, making them ideal for bridges, building frames, and outdoor infrastructure. The partially threaded design concentrates strength where needed most, while the external hex drive facilitates high-torque installation without stripping. With UNC coarse threads ensuring rapid assembly and the Rockwell C19 hardness maintaining dimensional stability under stress, these bolts solve common challenges of structural fastening reliability and long-term maintenance reduction.

Specification Summary & Compliance

This 3/4"-10 hex head screw features precise Class 2A thread fit with UNC coarse threading standards, ensuring consistent engagement across mating components. Manufacturing adheres to ASME B18.2.6 dimensional specifications with material properties meeting ASTM A325/ASTM F3125 requirements for structural fasteners. Regulatory compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, confirming responsible material sourcing and production processes suitable for global industrial applications.