S-94705A209 1/2"-13 x 2" ASTM A193 Steel Heavy Hex Head Screws for High-Pressure Applications

Key Features & Benefits at a Glance

• Exceptional Tensile Performance: With 125,000 PSI tensile strength, this screw reliably withstands extreme loads in demanding industrial environments.
• High-Temperature & Pressure Resilience: Manufactured from ASTM Grade B7 steel, it maintains integrity and clamping force in high-pressure and high-temperature applications.
• Optimized Thread Engagement: The 1/2"-13 UNC coarse thread and Class 2A fit ensure quick assembly and secure fastening, reducing installation time and risk of cross-threading.
• Superior Durability & Wear Resistance: Rockwell C35 hardness provides excellent resistance to deformation and wear, extending service life in repetitive or high-stress conditions.
• Secure External Hex Drive: The 7/8" hex head allows for high-torque application with standard tools, ensuring a tight, reliable connection without slippage.
• Versatile Partially Threaded Design: A 1-1/4" threaded section combined with a 3/4" grip length offers flexibility for applications requiring precise unthreaded shank engagement.
• Industry-Standard Compliance: Meets ASTM A193 specifications, guaranteeing material quality and performance consistency for critical engineering projects.

Professional Applications & Engineering Value

Engineered for high-pressure and high-temperature systems, this Grade B7 steel hex head screw delivers critical reliability where failure is not an option. Its partially threaded configuration with a defined grip length ensures optimal stress distribution, preventing thread fatigue in dynamic loads. The 1/2"-13 UNC coarse thread facilitates rapid installation in heavy machinery, pressure vessels, and structural assemblies, while the external hex drive accommodates high torque requirements. By combining 125,000 PSI tensile strength and Rockwell C35 hardness, it addresses common challenges like thermal expansion and vibrational loosening, making it a trusted heavy-duty fastener for petrochemical, power generation, and industrial manufacturing applications requiring long-term, maintenance-free performance.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including Class 2A thread fit for consistent engagement and UNC coarse threading per industry norms. It is manufactured in compliance with ASTM A193 material specifications, ensuring traceability and quality for high-strength applications. The product conforms to relevant material and performance requirements, supporting use in regulated environments where documented compliance is essential.