S-94705A786 7/8"-9 x 6" 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 under extreme loads, reducing the risk of fastener failure in critical applications.
• High hardness rating (Rockwell C35) provides superior resistance to wear and deformation, extending service life in abrasive environments.
• Coarse UNC threading with Class 2A fit allows for quicker assembly and better vibration resistance, minimizing loosening in dynamic settings.
• Partially threaded design offers a secure grip length of 3 3/4", enabling precise clamping force without unnecessary thread engagement.
• External hex drive and hex head facilitate easy installation and removal with standard tools, improving maintenance efficiency.
• ASTM A193 Grade B7 compliance guarantees material integrity and consistency for high-temperature and high-pressure applications.
• Robust steel construction delivers durability and corrosion resistance, ideal for long-term use in industrial and construction sectors.

Professional Applications & Engineering Value

This 7/8"-9 UNC Grade B7 steel hex head screw is engineered to address common challenges in demanding industrial environments, such as structural instability and thermal stress. Its high tensile strength and Rockwell C35 hardness prevent stripping and shearing under heavy loads, while the coarse thread and Class 2A fit ensure secure fastening even in vibrating machinery. The partially threaded configuration allows for optimal grip length, reducing the risk of over-tightening and thread damage. Ideal for construction, pressure vessels, and heavy equipment, this ASTM A193-compliant fastener provides reliable performance in high-temperature applications, minimizing downtime and maintenance costs.

Specification Summary & Compliance

This screw features a 7/8"-9 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy, ensuring consistent engagement and load distribution. Manufactured from Grade B7 steel, it meets ASTM A193 specifications for high-strength bolting materials, with a tensile strength of 125,000 PSI and hardness of Rockwell C35. The product complies with industry standards for material composition and performance, supporting use in critical applications where reliability and safety are paramount.