S-95373A205 1/2"-13 x 4" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with hot-dipped galvanized finish for long-lasting performance in harsh environments
• High tensile strength of 60,000 psi ensures reliable fastening in demanding industrial applications
• Rockwell B69 hardness provides excellent durability and resistance to wear during installation and use
• Class 2A thread fit offers optimal assembly efficiency while maintaining secure connections
• Partially threaded design allows for precise clamping force control in various material thicknesses
• External hex drive enables easy installation with standard tools and high torque application
• Coarse UNC threading ensures quick assembly and reduced cross-threading risks in industrial settings

Professional Applications & Engineering Value

This heavy-duty hex head screw delivers exceptional engineering value through its hot-dipped galvanized steel construction, specifically designed to address common industrial fastening challenges. The combination of 60,000 psi tensile strength and Rockwell B69 hardness ensures reliable performance in structural applications where vibration resistance and load-bearing capacity are critical. The 1/2"-13 UNC coarse thread configuration provides superior grip in various materials, while the partially threaded shank allows for optimal clamping in assembly operations. Particularly valuable in construction, machinery, and outdoor installations, this hex head screw solves corrosion-related failure points through its robust galvanized finish, making it ideal for applications exposed to moisture, chemicals, and extreme weather conditions where fastener integrity cannot be compromised.

Specification Summary & Compliance

This 4" hex head screw features precise Class 2A thread fit tolerances and UNC coarse threading according to ASME standards. Manufactured to meet ASME B18.2.1 specifications and ASTM A307 material requirements, ensuring dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) standards, including the latest SVHC updates, guaranteeing environmental responsibility and workplace safety in industrial applications.