S-91583A627 1"-8 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 corrosion resistance with hot-dipped galvanized steel coating, ensuring long-term reliability in harsh environments.
• Superior load-bearing capability with 120,000 psi tensile strength and Rockwell C19 hardness, ideal for heavy-duty structural applications.
• Reliable fastening performance due to Class 2A thread fit and fully threaded UNC coarse spacing, providing consistent grip and ease of installation.
• High-strength Grade A325 compliance ensures structural integrity and safety in demanding construction and industrial settings.
• Easy installation and removal with external hex drive and hex head design, allowing for efficient torque application with standard tools.
• Broad regulatory compliance with ASME, ASTM, RoHS 3, and REACH standards, guaranteeing environmental safety and material quality.
• Versatile coarse thread design (1"-8 UNC) enhances resistance to vibration loosening in coarse-spaced applications.

Professional Applications & Engineering Value

This Grade A325 hot-dipped galvanized steel hex head screw is engineered to address critical challenges in structural and industrial fastening. The hot-dipped galvanized coating provides robust protection against corrosion, extending service life in outdoor or corrosive environments like construction and infrastructure projects. With a tensile strength of 120,000 psi and Rockwell C19 hardness, it delivers high resistance to shear and tensile stresses, preventing failures in heavy-load applications such as steel framing, bridges, and machinery assembly. The fully threaded 1"-8 UNC coarse spacing and Class 2A thread fit ensure secure, vibration-resistant connections, reducing maintenance needs and enhancing safety. Compliant with ASME B18.2.6, ASTM A325, and ASTM F3125 standards, it offers reliable performance for professionals in construction, manufacturing, and engineering sectors where durability and compliance are paramount.

Specification Summary & Compliance

This screw features a 1"-8 UNC thread size with coarse spacing and Class 2A thread fit, ensuring precise dimensional accuracy and ease of assembly. It meets key industry standards including ASME B18.2.6, ASTM A325, and ASTM F3125, and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, supporting sustainable and safe usage in global markets.