S-94705A732 1/2"-13 x 4 1/2" ASTM A193 Steel Heavy Hex Head Screws for High-Pressure Applications

Key Features & Benefits at a Glance

• Exceptional tensile strength of 125,000 psi ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
• High hardness rating (Rockwell C35) provides superior resistance to wear and deformation, extending service life in demanding environments.
• Partially threaded design with a 3 1/4" grip length offers optimal clamping force distribution, ideal for thick material assemblies.
• Coarse UNC threads enable faster installation and better performance in materials prone to stripping or corrosion.
• Class 2A thread fit ensures consistent, reliable engagement with nuts and tapped holes, minimizing assembly issues.
• External hex drive allows for high-torque application with standard tools, speeding up installation and maintenance.
• ASTM A193 compliance guarantees material quality and manufacturing consistency for critical and high-temperature applications.

Professional Applications & Engineering Value

This Grade B7 steel hex head screw is engineered to address the rigorous demands of heavy-duty industrial and construction settings. Its high tensile strength and Rockwell C35 hardness make it suitable for applications where mechanical stress and environmental factors are concerns, such as pressure vessels, structural frameworks, and machinery assemblies. The partially threaded configuration with a substantial grip length ensures secure fastening in thick sections, preventing loosening under vibration. With coarse UNC threads and Class 2A fit, it offers quick, reliable installation, reducing labor time and enhancing overall assembly integrity in industrial fasteners systems.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including a Class 2A thread fit for consistent engagement and UNC coarse threads with a size of 1/2"-13. It meets ASTM A193 specifications for material and manufacturing, ensuring reliability in high-pressure and high-temperature environments. The screw is manufactured from steel with a right-hand thread direction and external hex drive, complying with industry norms for heavy-duty applications. Additionally, it conforms to common regulatory requirements such as RoHS and REACH, supporting safe and sustainable usage in various engineering contexts.