S-91583A190 3/4"-10 x 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 corrosion resistance through hot-dipped galvanized steel construction, ensuring long-term reliability in harsh industrial environments
• Superior structural integrity with Grade A325 certification and 120,000 PSI tensile strength for critical load-bearing applications
• Optimized installation efficiency featuring external hex drive and 1 1/4" head width for secure tool engagement and reduced assembly time
• Enhanced vibration resistance with UNC coarse threading and Class 2A thread fit maintaining secure connections under dynamic loads
• Precise load distribution through partially threaded design with 2 5/8" grip length for controlled clamping force
• Industry compliance assurance meeting ASME B18.2.6, ASTM A325, and ASTM F3125 specifications for guaranteed performance standards
• Environmental regulation adherence with RoHS 3 and REACH compliance for safe, sustainable industrial usage

Professional Applications & Engineering Value

Engineered for heavy-duty structural connections, these Grade A325 hex head screws deliver critical performance in construction, bridgework, and industrial machinery applications. The hot-dipped galvanized steel construction provides superior corrosion protection, extending service life in exposed environments while maintaining Rockwell C19 hardness for wear resistance. The 3/4"-10 UNC coarse thread configuration ensures rapid installation and reliable performance in structural steel connections, with partial threading optimizing clamp load distribution. These industrial fasteners solve common engineering challenges including joint slippage, corrosion-induced failure, and vibration loosening through their 120,000 PSI tensile strength and precision Class 2A thread fit, making them ideal for critical bolted connections requiring predictable, consistent performance.

Specification Summary & Compliance

This 3/4"-10 hex head screw maintains precision Class 2A thread fit with UNC coarse threading standards. Manufacturing complies with ASME B18.2.6 dimensional specifications and ASTM A325/ASTM F3125 material and mechanical requirements. The fastener demonstrates full compliance with RoHS 3 (2015/863/EU) restrictions and REACH (EC 1907/2006) regulations, ensuring environmental safety and industrial suitability. Dimensional accuracy includes 4" overall length with 1 3/8" thread length and 2 5/8" grip length for precise application engineering.